test_views.py

import os
import unittest
import warnings
from zope.interface import implementer

from pyramid import testing
from pyramid.exceptions import (
    ConfigurationConflictError,
    ConfigurationError,
    ConfigurationExecutionError,
)
from pyramid.interfaces import IMultiView, IRequest, IResponse
from pyramid.util import text_
from pyramid.view import Self

from . import IDummy, dummy_view


class TestViewsConfigurationMixin(unittest.TestCase):
    def _makeOne(self, *arg, **kw):
        from pyramid.config import Configurator

        config = Configurator(*arg, **kw)
        config.set_default_csrf_options(require_csrf=False)
        return config

    def _getViewCallable(
        self,
        config,
        ctx_iface=None,
        exc_iface=None,
        request_iface=None,
        name='',
    ):
        from zope.interface import Interface

        from pyramid.interfaces import (
            IExceptionViewClassifier,
            IRequest,
            IView,
            IViewClassifier,
        )

        if exc_iface:
            classifier = IExceptionViewClassifier
            ctx_iface = exc_iface
        else:
            classifier = IViewClassifier
        if ctx_iface is None:
            ctx_iface = Interface
        if request_iface is None:
            request_iface = IRequest
        return config.registry.adapters.lookup(
            (classifier, request_iface, ctx_iface),
            IView,
            name=name,
            default=None,
        )

    def _registerRenderer(self, config, name='.txt'):
        from pyramid.interfaces import IRendererFactory

        class Renderer:
            def __init__(self, info):
                self.__class__.info = info

            def __call__(self, *arg):
                return b'Hello!'

        config.registry.registerUtility(Renderer, IRendererFactory, name=name)
        return Renderer

    def _makeRequest(self, config):
        request = DummyRequest()
        request.registry = config.registry
        return request

    def _assertNotFound(self, wrapper, *arg):
        from pyramid.httpexceptions import HTTPNotFound

        self.assertRaises(HTTPNotFound, wrapper, *arg)

    def _getRouteRequestIface(self, config, name):
        from pyramid.interfaces import IRouteRequest

        iface = config.registry.getUtility(IRouteRequest, name)
        return iface

    def _assertRoute(self, config, name, path, num_predicates=0):
        from pyramid.interfaces import IRoutesMapper

        mapper = config.registry.getUtility(IRoutesMapper)
        routes = mapper.get_routes()
        route = routes[0]
        self.assertEqual(len(routes), 1)
        self.assertEqual(route.name, name)
        self.assertEqual(route.path, path)
        self.assertEqual(len(routes[0].predicates), num_predicates)
        return route

    def test_add_view_view_callable_None_no_renderer(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(ConfigurationError, config.add_view)

    def test_add_view_with_request_type_and_route_name(self):
        config = self._makeOne(autocommit=True)
        view = lambda *arg: 'OK'
        self.assertRaises(
            ConfigurationError,
            config.add_view,
            view,
            '',
            None,
            None,
            True,
            True,
        )

    def test_add_view_with_request_type(self):
        from zope.interface import directlyProvides

        from pyramid.interfaces import IRequest
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(
            view=view,
            request_type='pyramid.interfaces.IRequest',
            renderer=null_renderer,
        )
        wrapper = self._getViewCallable(config)
        request = DummyRequest()
        self._assertNotFound(wrapper, None, request)
        directlyProvides(request, IRequest)
        result = wrapper(None, request)
        self.assertEqual(result, 'OK')

    def test_add_view_view_callable_None_with_renderer(self):
        config = self._makeOne(autocommit=True)
        self._registerRenderer(config, name='dummy')
        config.add_view(renderer='dummy')
        view = self._getViewCallable(config)
        self.assertTrue(b'Hello!' in view(None, None).body)

    def test_add_view_with_tmpl_renderer_factory_introspector_missing(self):
        config = self._makeOne(autocommit=True)
        config.introspection = False
        config.introspector = None
        config.add_view(renderer='dummy.pt')
        view = self._getViewCallable(config)
        self.assertRaises(ValueError, view, None, None)

    def test_add_view_with_tmpl_renderer_factory_no_renderer_factory(self):
        config = self._makeOne(autocommit=True)
        introspector = DummyIntrospector()
        config.introspector = introspector
        config.add_view(renderer='dummy.pt')
        self.assertFalse(
            ('renderer factories', '.pt') in introspector.related[-1]
        )
        view = self._getViewCallable(config)
        self.assertRaises(ValueError, view, None, None)

    def test_add_view_with_tmpl_renderer_factory_with_renderer_factory(self):
        config = self._makeOne(autocommit=True)
        introspector = DummyIntrospector(True)
        config.introspector = introspector

        def dummy_factory(helper):
            return lambda val, system_vals: 'Hello!'

        config.add_renderer('.pt', dummy_factory)
        config.add_view(renderer='dummy.pt')
        self.assertTrue(
            ('renderer factories', '.pt') in introspector.related[-1]
        )
        view = self._getViewCallable(config)
        self.assertTrue(b'Hello!' in view(None, None).body)

    def test_add_view_wrapped_view_is_decorated(self):
        def view(request):  # request-only wrapper
            """ """

        config = self._makeOne(autocommit=True)
        config.add_view(view=view)
        wrapper = self._getViewCallable(config)
        self.assertEqual(wrapper.__module__, view.__module__)
        self.assertEqual(wrapper.__name__, view.__name__)
        self.assertEqual(wrapper.__doc__, view.__doc__)
        self.assertEqual(
            wrapper.__discriminator__(None, None).resolve()[0], 'view'
        )

    def test_add_view_view_callable_dottedname(self):
        from pyramid.renderers import null_renderer

        config = self._makeOne(autocommit=True)
        config.add_view(
            view='tests.test_config.dummy_view', renderer=null_renderer
        )
        wrapper = self._getViewCallable(config)
        self.assertEqual(wrapper(None, None), 'OK')

    def test_add_view_with_function_callable(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        result = wrapper(None, None)
        self.assertEqual(result, 'OK')

    def test_add_view_with_function_callable_requestonly(self):
        from pyramid.renderers import null_renderer

        def view(request):
            return 'OK'

        config = self._makeOne(autocommit=True)
        config.add_view(view=view, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        result = wrapper(None, None)
        self.assertEqual(result, 'OK')

    def test_add_view_with_name(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, name='abc', renderer=null_renderer)
        wrapper = self._getViewCallable(config, name='abc')
        result = wrapper(None, None)
        self.assertEqual(result, 'OK')

    def test_add_view_with_name_unicode(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        name = text_(b'La Pe\xc3\xb1a', 'utf-8')
        config.add_view(view=view, name=name, renderer=null_renderer)
        wrapper = self._getViewCallable(config, name=name)
        result = wrapper(None, None)
        self.assertEqual(result, 'OK')

    def test_add_view_with_decorator(self):
        from pyramid.renderers import null_renderer

        def view(request):
            """ABC"""
            return 'OK'

        def view_wrapper(fn):
            def inner(context, request):
                return fn(context, request)

            return inner

        config = self._makeOne(autocommit=True)
        config.add_view(
            view=view, decorator=view_wrapper, renderer=null_renderer
        )
        wrapper = self._getViewCallable(config)
        self.assertFalse(wrapper is view)
        self.assertEqual(wrapper.__doc__, view.__doc__)
        result = wrapper(None, None)
        self.assertEqual(result, 'OK')

    def test_add_view_with_decorator_tuple(self):
        from pyramid.renderers import null_renderer

        def view(request):
            """ABC"""
            return 'OK'

        def view_wrapper1(fn):
            def inner(context, request):
                return 'wrapped1' + fn(context, request)

            return inner

        def view_wrapper2(fn):
            def inner(context, request):
                return 'wrapped2' + fn(context, request)

            return inner

        config = self._makeOne(autocommit=True)
        config.add_view(
            view=view,
            decorator=(view_wrapper2, view_wrapper1),
            renderer=null_renderer,
        )
        wrapper = self._getViewCallable(config)
        self.assertFalse(wrapper is view)
        self.assertEqual(wrapper.__doc__, view.__doc__)
        result = wrapper(None, None)
        self.assertEqual(result, 'wrapped2wrapped1OK')

    def test_add_view_with_http_cache(self):
        import datetime

        from pyramid.response import Response

        response = Response('OK')

        def view(request):
            """ABC"""
            return response

        config = self._makeOne(autocommit=True)
        config.add_view(view=view, http_cache=(86400, {'public': True}))
        wrapper = self._getViewCallable(config)
        self.assertFalse(wrapper is view)
        self.assertEqual(wrapper.__doc__, view.__doc__)
        request = testing.DummyRequest()
        when = datetime.datetime.utcnow() + datetime.timedelta(days=1)
        result = wrapper(None, request)
        self.assertEqual(result, response)
        headers = dict(response.headerlist)
        self.assertEqual(headers['Cache-Control'], 'max-age=86400, public')
        expires = parse_httpdate(headers['Expires'])
        assert_similar_datetime(expires, when)

    def test_add_view_as_instance(self):
        from pyramid.renderers import null_renderer

        class AView:
            def __call__(self, context, request):
                """ """
                return 'OK'

        view = AView()
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        result = wrapper(None, None)
        self.assertEqual(result, 'OK')

    def test_add_view_as_instancemethod(self):
        from pyramid.renderers import null_renderer

        class View:
            def index(self, context, request):
                return 'OK'

        view = View()
        config = self._makeOne(autocommit=True)
        config.add_view(view=view.index, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        result = wrapper(None, None)
        self.assertEqual(result, 'OK')

    def test_add_view_as_instancemethod_requestonly(self):
        from pyramid.renderers import null_renderer

        class View:
            def index(self, request):
                return 'OK'

        view = View()
        config = self._makeOne(autocommit=True)
        config.add_view(view=view.index, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        result = wrapper(None, None)
        self.assertEqual(result, 'OK')

    def test_add_view_as_instance_requestonly(self):
        from pyramid.renderers import null_renderer

        class AView:
            def __call__(self, request):
                """ """
                return 'OK'

        view = AView()
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        result = wrapper(None, None)
        self.assertEqual(result, 'OK')

    def test_add_view_as_oldstyle_class(self):
        from pyramid.renderers import null_renderer

        class view:
            def __init__(self, context, request):
                self.context = context
                self.request = request

            def __call__(self):
                return 'OK'

        config = self._makeOne(autocommit=True)
        config.add_view(view=view, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        result = wrapper(None, request)
        self.assertEqual(result, 'OK')
        self.assertEqual(request.__view__.__class__, view)

    def test_add_view_as_oldstyle_class_requestonly(self):
        from pyramid.renderers import null_renderer

        class view:
            def __init__(self, request):
                self.request = request

            def __call__(self):
                return 'OK'

        config = self._makeOne(autocommit=True)
        config.add_view(view=view, renderer=null_renderer)
        wrapper = self._getViewCallable(config)

        request = self._makeRequest(config)
        result = wrapper(None, request)
        self.assertEqual(result, 'OK')
        self.assertEqual(request.__view__.__class__, view)

    def test_add_view_context_as_class(self):
        from zope.interface import implementedBy

        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'

        class Foo:
            pass

        config = self._makeOne(autocommit=True)
        config.add_view(context=Foo, view=view, renderer=null_renderer)
        foo = implementedBy(Foo)
        wrapper = self._getViewCallable(config, foo)
        self.assertEqual(wrapper, view)

    def test_add_view_raises_on_self_with_non_class_view(self):
        def view(exc, request):  # pragma: no cover
            pass

        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ValueError,
            lambda: config.add_view(view=view, context=Self, name=Self),
        )

    def test_add_view_raises_on_function_context_with_non_class_view(self):
        def view(exc, request):  # pragma: no cover
            pass

        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ValueError,
            lambda: config.add_view(view=view, context=lambda x: x),
        )

    def test_add_view_replaces_self(self):
        from zope.interface import implementedBy

        class Foo:  # pragma: no cover
            def __init__(self, request):
                pass

            def view(self):
                pass

        config = self._makeOne(autocommit=True)
        config.add_view(Foo, context=Self, name=Self, attr='view')
        interface = implementedBy(Foo)
        wrapper = self._getViewCallable(config, interface, name='view')
        self.assertEqual(wrapper.__original_view__, Foo)

    def test_add_view_replaces_function(self):
        from zope.interface import implementedBy

        class Foo2:
            pass

        class Foo:  # pragma: no cover
            wrapped = Foo2

            def __init__(self, request):
                pass

            def view(self):
                pass

        config = self._makeOne(autocommit=True)
        config.add_view(Foo, context=lambda x: x.wrapped, attr='view')
        interface = implementedBy(Foo2)
        wrapper = self._getViewCallable(config, interface)
        self.assertEqual(wrapper.__original_view__, Foo)

    def test_add_view_context_as_iface(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(context=IDummy, view=view, renderer=null_renderer)
        wrapper = self._getViewCallable(config, IDummy)
        self.assertEqual(wrapper, view)

    def test_add_view_context_as_dottedname(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(
            context='tests.test_config.IDummy',
            view=view,
            renderer=null_renderer,
        )
        wrapper = self._getViewCallable(config, IDummy)
        self.assertEqual(wrapper, view)

    def test_add_view_for__as_dottedname(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(
            for_='tests.test_config.IDummy', view=view, renderer=null_renderer
        )
        wrapper = self._getViewCallable(config, IDummy)
        self.assertEqual(wrapper, view)

    def test_add_view_for_as_class(self):
        # ``for_`` is older spelling for ``context``
        from zope.interface import implementedBy

        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'

        class Foo:
            pass

        config = self._makeOne(autocommit=True)
        config.add_view(for_=Foo, view=view, renderer=null_renderer)
        foo = implementedBy(Foo)
        wrapper = self._getViewCallable(config, foo)
        self.assertEqual(wrapper, view)

    def test_add_view_for_as_iface(self):
        # ``for_`` is older spelling for ``context``
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(for_=IDummy, view=view, renderer=null_renderer)
        wrapper = self._getViewCallable(config, IDummy)
        self.assertEqual(wrapper, view)

    def test_add_view_context_trumps_for(self):
        # ``for_`` is older spelling for ``context``
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)

        class Foo:
            pass

        config.add_view(
            context=IDummy, for_=Foo, view=view, renderer=null_renderer
        )
        wrapper = self._getViewCallable(config, IDummy)
        self.assertEqual(wrapper, view)

    def test_add_view_register_secured_view(self):
        from zope.interface import Interface

        from pyramid.interfaces import IRequest, ISecuredView, IViewClassifier
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        view.__call_permissive__ = view
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, renderer=null_renderer)
        wrapper = config.registry.adapters.lookup(
            (IViewClassifier, IRequest, Interface),
            ISecuredView,
            name='',
            default=None,
        )
        self.assertEqual(wrapper, view)

    def test_add_view_exception_register_secured_view(self):
        from zope.interface import implementedBy

        from pyramid.interfaces import (
            IExceptionViewClassifier,
            IRequest,
            IView,
        )
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        view.__call_permissive__ = view
        config = self._makeOne(autocommit=True)
        config.add_view(
            view=view, context=RuntimeError, renderer=null_renderer
        )
        wrapper = config.registry.adapters.lookup(
            (IExceptionViewClassifier, IRequest, implementedBy(RuntimeError)),
            IView,
            name='',
            default=None,
        )
        self.assertEqual(wrapper, view)

    def test_add_view_same_phash_overrides_existing_single_view(self):
        from hashlib import md5
        from zope.interface import Interface

        from pyramid.interfaces import (
            IMultiView,
            IRequest,
            IView,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        phash = md5()
        phash.update(b'xhr = True')
        view = lambda *arg: 'NOT OK'
        view.__phash__ = phash.hexdigest()
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view, (IViewClassifier, IRequest, Interface), IView, name=''
        )

        def newview(context, request):
            return 'OK'

        config.add_view(view=newview, xhr=True, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        self.assertFalse(IMultiView.providedBy(wrapper))
        request = DummyRequest()
        request.is_xhr = True
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_exc_same_phash_overrides_existing_single_view(self):
        from hashlib import md5
        from zope.interface import implementedBy

        from pyramid.interfaces import (
            IExceptionViewClassifier,
            IMultiView,
            IRequest,
            IView,
        )
        from pyramid.renderers import null_renderer

        phash = md5()
        phash.update(b'xhr = True')
        view = lambda *arg: 'NOT OK'
        view.__phash__ = phash.hexdigest()
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view,
            (IExceptionViewClassifier, IRequest, implementedBy(RuntimeError)),
            IView,
            name='',
        )

        def newview(context, request):
            return 'OK'

        config.add_view(
            view=newview,
            xhr=True,
            context=RuntimeError,
            renderer=null_renderer,
        )
        wrapper = self._getViewCallable(
            config, exc_iface=implementedBy(RuntimeError)
        )
        self.assertFalse(IMultiView.providedBy(wrapper))
        request = DummyRequest()
        request.is_xhr = True
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_default_phash_overrides_no_phash(self):
        from zope.interface import Interface

        from pyramid.interfaces import (
            IMultiView,
            IRequest,
            IView,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'NOT OK'
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view, (IViewClassifier, IRequest, Interface), IView, name=''
        )

        def newview(context, request):
            return 'OK'

        config.add_view(view=newview, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        self.assertFalse(IMultiView.providedBy(wrapper))
        request = DummyRequest()
        request.is_xhr = True
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_exc_default_phash_overrides_no_phash(self):
        from zope.interface import implementedBy

        from pyramid.interfaces import (
            IExceptionViewClassifier,
            IMultiView,
            IRequest,
            IView,
        )
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'NOT OK'
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view,
            (IExceptionViewClassifier, IRequest, implementedBy(RuntimeError)),
            IView,
            name='',
        )

        def newview(context, request):
            return 'OK'

        config.add_view(
            view=newview, context=RuntimeError, renderer=null_renderer
        )
        wrapper = self._getViewCallable(
            config, exc_iface=implementedBy(RuntimeError)
        )
        self.assertFalse(IMultiView.providedBy(wrapper))
        request = DummyRequest()
        request.is_xhr = True
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_default_phash_overrides_default_phash(self):
        from zope.interface import Interface

        from pyramid.config.predicates import DEFAULT_PHASH
        from pyramid.interfaces import (
            IMultiView,
            IRequest,
            IView,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'NOT OK'
        view.__phash__ = DEFAULT_PHASH
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view, (IViewClassifier, IRequest, Interface), IView, name=''
        )

        def newview(context, request):
            return 'OK'

        config.add_view(view=newview, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        self.assertFalse(IMultiView.providedBy(wrapper))
        request = DummyRequest()
        request.is_xhr = True
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_exc_default_phash_overrides_default_phash(self):
        from zope.interface import implementedBy

        from pyramid.config.predicates import DEFAULT_PHASH
        from pyramid.interfaces import (
            IExceptionViewClassifier,
            IMultiView,
            IRequest,
            IView,
        )
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'NOT OK'
        view.__phash__ = DEFAULT_PHASH
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view,
            (IExceptionViewClassifier, IRequest, implementedBy(RuntimeError)),
            IView,
            name='',
        )

        def newview(context, request):
            return 'OK'

        config.add_view(
            view=newview, context=RuntimeError, renderer=null_renderer
        )
        wrapper = self._getViewCallable(
            config, exc_iface=implementedBy(RuntimeError)
        )
        self.assertFalse(IMultiView.providedBy(wrapper))
        request = DummyRequest()
        request.is_xhr = True
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_multiview_replaces_existing_view(self):
        from zope.interface import Interface

        from pyramid.interfaces import (
            IMultiView,
            IRequest,
            IView,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        view.__phash__ = 'abc'
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view, (IViewClassifier, IRequest, Interface), IView, name=''
        )
        config.add_view(view=view, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        self.assertTrue(IMultiView.providedBy(wrapper))
        self.assertEqual(wrapper(None, None), 'OK')

    def test_add_view_exc_multiview_replaces_existing_view(self):
        from zope.interface import implementedBy

        from pyramid.interfaces import (
            IExceptionViewClassifier,
            IMultiView,
            IRequest,
            IView,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        view.__phash__ = 'abc'
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view,
            (IViewClassifier, IRequest, implementedBy(RuntimeError)),
            IView,
            name='',
        )
        config.registry.registerAdapter(
            view,
            (IExceptionViewClassifier, IRequest, implementedBy(RuntimeError)),
            IView,
            name='',
        )
        config.add_view(
            view=view, context=RuntimeError, renderer=null_renderer
        )
        wrapper = self._getViewCallable(
            config, exc_iface=implementedBy(RuntimeError)
        )
        self.assertTrue(IMultiView.providedBy(wrapper))
        self.assertEqual(wrapper(None, None), 'OK')

    def test_add_view_multiview_replaces_existing_securedview(self):
        from zope.interface import Interface

        from pyramid.interfaces import (
            IMultiView,
            IRequest,
            ISecuredView,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        view.__phash__ = 'abc'
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view, (IViewClassifier, IRequest, Interface), ISecuredView, name=''
        )
        config.add_view(view=view, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        self.assertTrue(IMultiView.providedBy(wrapper))
        self.assertEqual(wrapper(None, None), 'OK')

    def test_add_view_exc_multiview_replaces_existing_securedview(self):
        from zope.interface import implementedBy

        from pyramid.interfaces import (
            IExceptionViewClassifier,
            IMultiView,
            IRequest,
            ISecuredView,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        view.__phash__ = 'abc'
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view,
            (IViewClassifier, IRequest, implementedBy(RuntimeError)),
            ISecuredView,
            name='',
        )
        config.registry.registerAdapter(
            view,
            (IExceptionViewClassifier, IRequest, implementedBy(RuntimeError)),
            ISecuredView,
            name='',
        )
        config.add_view(
            view=view, context=RuntimeError, renderer=null_renderer
        )
        wrapper = self._getViewCallable(
            config, exc_iface=implementedBy(RuntimeError)
        )
        self.assertTrue(IMultiView.providedBy(wrapper))
        self.assertEqual(wrapper(None, None), 'OK')

    def test_add_view_with_accept_multiview_replaces_existing_view(self):
        from zope.interface import Interface

        from pyramid.interfaces import (
            IMultiView,
            IRequest,
            IView,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        def view(context, request):
            return 'OK'

        def view2(context, request):
            return 'OK2'

        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view, (IViewClassifier, IRequest, Interface), IView, name=''
        )
        config.add_view(view=view2, accept='text/html', renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        self.assertTrue(IMultiView.providedBy(wrapper))
        self.assertEqual(len(wrapper.views), 1)
        self.assertEqual(len(wrapper.media_views), 1)
        self.assertEqual(wrapper(None, None), 'OK')
        request = DummyRequest()
        request.accept = DummyAccept('text/html', 'text/html')
        self.assertEqual(wrapper(None, request), 'OK2')

    def test_add_view_mixed_case_replaces_existing_view(self):
        from pyramid.renderers import null_renderer

        def view(context, request):
            return 'OK'

        def view2(context, request):  # pragma: no cover
            return 'OK2'

        def view3(context, request):
            return 'OK3'

        config = self._makeOne(autocommit=True)
        config.add_view(view=view, renderer=null_renderer)
        config.add_view(view=view2, accept='text/html', renderer=null_renderer)
        config.add_view(view=view3, accept='text/HTML', renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        self.assertTrue(IMultiView.providedBy(wrapper))
        self.assertEqual(len(wrapper.media_views.items()), 1)
        self.assertFalse('text/HTML' in wrapper.media_views)
        self.assertEqual(wrapper(None, None), 'OK')
        request = DummyRequest()
        request.accept = DummyAccept('text/html', 'text/html')
        self.assertEqual(wrapper(None, request), 'OK3')

    def test_add_views_with_accept_multiview_replaces_existing(self):
        from pyramid.renderers import null_renderer

        def view(context, request):
            return 'OK'

        def view2(context, request):  # pragma: no cover
            return 'OK2'

        def view3(context, request):
            return 'OK3'

        config = self._makeOne(autocommit=True)
        config.add_view(view=view, renderer=null_renderer)
        config.add_view(view=view2, accept='text/html', renderer=null_renderer)
        config.add_view(view=view3, accept='text/html', renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        self.assertEqual(len(wrapper.media_views['text/html']), 1)
        self.assertEqual(wrapper(None, None), 'OK')
        request = DummyRequest()
        request.accept = DummyAccept('text/html', 'text/html')
        self.assertEqual(wrapper(None, request), 'OK3')

    def test_add_view_exc_with_accept_multiview_replaces_existing_view(self):
        from zope.interface import implementedBy

        from pyramid.interfaces import (
            IExceptionViewClassifier,
            IMultiView,
            IRequest,
            IView,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        def view(context, request):
            return 'OK'

        def view2(context, request):
            return 'OK2'

        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view,
            (IViewClassifier, IRequest, implementedBy(RuntimeError)),
            IView,
            name='',
        )
        config.registry.registerAdapter(
            view,
            (IExceptionViewClassifier, IRequest, implementedBy(RuntimeError)),
            IView,
            name='',
        )
        config.add_view(
            view=view2,
            accept='text/html',
            context=RuntimeError,
            renderer=null_renderer,
        )
        wrapper = self._getViewCallable(
            config, exc_iface=implementedBy(RuntimeError)
        )
        self.assertTrue(IMultiView.providedBy(wrapper))
        self.assertEqual(len(wrapper.views), 1)
        self.assertEqual(len(wrapper.media_views), 1)
        self.assertEqual(wrapper(None, None), 'OK')
        request = DummyRequest()
        request.accept = DummyAccept('text/html', 'text/html')
        self.assertEqual(wrapper(None, request), 'OK2')

    def test_add_view_multiview_replaces_existing_view_with___accept__(self):
        from zope.interface import Interface

        from pyramid.interfaces import (
            IMultiView,
            IRequest,
            IView,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        def view(context, request):
            return 'OK'

        def view2(context, request):
            return 'OK2'

        view.__accept__ = 'text/html'
        view.__phash__ = 'abc'
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view, (IViewClassifier, IRequest, Interface), IView, name=''
        )
        config.add_view(view=view2, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        self.assertTrue(IMultiView.providedBy(wrapper))
        self.assertEqual(len(wrapper.views), 1)
        self.assertEqual(len(wrapper.media_views), 1)
        self.assertEqual(wrapper(None, None), 'OK2')
        request = DummyRequest()
        request.accept = DummyAccept('text/html')
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_exc_mulview_replaces_existing_view_with___accept__(self):
        from zope.interface import implementedBy

        from pyramid.interfaces import (
            IExceptionViewClassifier,
            IMultiView,
            IRequest,
            IView,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        def view(context, request):
            return 'OK'

        def view2(context, request):
            return 'OK2'

        view.__accept__ = 'text/html'
        view.__phash__ = 'abc'
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view,
            (IViewClassifier, IRequest, implementedBy(RuntimeError)),
            IView,
            name='',
        )
        config.registry.registerAdapter(
            view,
            (IExceptionViewClassifier, IRequest, implementedBy(RuntimeError)),
            IView,
            name='',
        )
        config.add_view(
            view=view2, context=RuntimeError, renderer=null_renderer
        )
        wrapper = self._getViewCallable(
            config, exc_iface=implementedBy(RuntimeError)
        )
        self.assertTrue(IMultiView.providedBy(wrapper))
        self.assertEqual(len(wrapper.views), 1)
        self.assertEqual(len(wrapper.media_views), 1)
        self.assertEqual(wrapper(None, None), 'OK2')
        request = DummyRequest()
        request.accept = DummyAccept('text/html')
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_multiview_replaces_multiview(self):
        from zope.interface import Interface

        from pyramid.interfaces import IMultiView, IRequest, IViewClassifier
        from pyramid.renderers import null_renderer

        view = DummyMultiView()
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view, (IViewClassifier, IRequest, Interface), IMultiView, name=''
        )
        view2 = lambda *arg: 'OK2'
        config.add_view(view=view2, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        self.assertTrue(IMultiView.providedBy(wrapper))
        self.assertEqual(
            [(x[0], x[2]) for x in wrapper.views], [(view2, None)]
        )
        self.assertEqual(wrapper(None, None), 'OK1')

    def test_add_view_exc_multiview_replaces_multiviews(self):
        from zope.interface import implementedBy

        from pyramid.interfaces import (
            IExceptionViewClassifier,
            IMultiView,
            IRequest,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        hot_view = DummyMultiView()
        exc_view = DummyMultiView()
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            hot_view,
            (IViewClassifier, IRequest, implementedBy(RuntimeError)),
            IMultiView,
            name='',
        )
        config.registry.registerAdapter(
            exc_view,
            (IExceptionViewClassifier, IRequest, implementedBy(RuntimeError)),
            IMultiView,
            name='',
        )
        view2 = lambda *arg: 'OK2'
        config.add_view(
            view=view2, context=RuntimeError, renderer=null_renderer
        )
        hot_wrapper = self._getViewCallable(
            config, ctx_iface=implementedBy(RuntimeError)
        )
        self.assertTrue(IMultiView.providedBy(hot_wrapper))
        self.assertEqual(
            [(x[0], x[2]) for x in hot_wrapper.views], [(view2, None)]
        )
        self.assertEqual(hot_wrapper(None, None), 'OK1')

        exc_wrapper = self._getViewCallable(
            config, exc_iface=implementedBy(RuntimeError)
        )
        self.assertTrue(IMultiView.providedBy(exc_wrapper))
        self.assertEqual(
            [(x[0], x[2]) for x in exc_wrapper.views], [(view2, None)]
        )
        self.assertEqual(exc_wrapper(None, None), 'OK1')

    def test_add_view_exc_multiview_replaces_only_exc_multiview(self):
        from zope.interface import implementedBy

        from pyramid.interfaces import (
            IExceptionViewClassifier,
            IMultiView,
            IRequest,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        hot_view = DummyMultiView()
        exc_view = DummyMultiView()
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            hot_view,
            (IViewClassifier, IRequest, implementedBy(RuntimeError)),
            IMultiView,
            name='',
        )
        config.registry.registerAdapter(
            exc_view,
            (IExceptionViewClassifier, IRequest, implementedBy(RuntimeError)),
            IMultiView,
            name='',
        )
        view2 = lambda *arg: 'OK2'
        config.add_view(
            view=view2,
            context=RuntimeError,
            exception_only=True,
            renderer=null_renderer,
        )
        hot_wrapper = self._getViewCallable(
            config, ctx_iface=implementedBy(RuntimeError)
        )
        self.assertTrue(IMultiView.providedBy(hot_wrapper))
        self.assertEqual(len(hot_wrapper.views), 0)
        self.assertEqual(hot_wrapper(None, None), 'OK1')

        exc_wrapper = self._getViewCallable(
            config, exc_iface=implementedBy(RuntimeError)
        )
        self.assertTrue(IMultiView.providedBy(exc_wrapper))
        self.assertEqual(
            [(x[0], x[2]) for x in exc_wrapper.views], [(view2, None)]
        )
        self.assertEqual(exc_wrapper(None, None), 'OK1')

    def test_add_view_multiview_context_superclass_then_subclass(self):
        from zope.interface import Interface

        from pyramid.interfaces import (
            IMultiView,
            IRequest,
            IView,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        class ISuper(Interface):
            pass

        class ISub(ISuper):
            pass

        view = lambda *arg: 'OK'
        view2 = lambda *arg: 'OK2'
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view, (IViewClassifier, IRequest, ISuper), IView, name=''
        )
        config.add_view(view=view2, for_=ISub, renderer=null_renderer)
        wrapper = self._getViewCallable(
            config, ctx_iface=ISuper, request_iface=IRequest
        )
        self.assertFalse(IMultiView.providedBy(wrapper))
        self.assertEqual(wrapper(None, None), 'OK')
        wrapper = self._getViewCallable(
            config, ctx_iface=ISub, request_iface=IRequest
        )
        self.assertFalse(IMultiView.providedBy(wrapper))
        self.assertEqual(wrapper(None, None), 'OK2')

    def test_add_view_multiview_exception_superclass_then_subclass(self):
        from zope.interface import implementedBy

        from pyramid.interfaces import (
            IExceptionViewClassifier,
            IMultiView,
            IRequest,
            IView,
            IViewClassifier,
        )
        from pyramid.renderers import null_renderer

        class Super(Exception):
            pass

        class Sub(Super):
            pass

        view = lambda *arg: 'OK'
        view2 = lambda *arg: 'OK2'
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view, (IViewClassifier, IRequest, Super), IView, name=''
        )
        config.registry.registerAdapter(
            view, (IExceptionViewClassifier, IRequest, Super), IView, name=''
        )
        config.add_view(view=view2, for_=Sub, renderer=null_renderer)
        wrapper = self._getViewCallable(
            config, ctx_iface=implementedBy(Super), request_iface=IRequest
        )
        wrapper_exc_view = self._getViewCallable(
            config, exc_iface=implementedBy(Super), request_iface=IRequest
        )
        self.assertEqual(wrapper_exc_view, wrapper)
        self.assertFalse(IMultiView.providedBy(wrapper_exc_view))
        self.assertEqual(wrapper_exc_view(None, None), 'OK')
        wrapper = self._getViewCallable(
            config, ctx_iface=implementedBy(Sub), request_iface=IRequest
        )
        wrapper_exc_view = self._getViewCallable(
            config, exc_iface=implementedBy(Sub), request_iface=IRequest
        )
        self.assertEqual(wrapper_exc_view, wrapper)
        self.assertFalse(IMultiView.providedBy(wrapper_exc_view))
        self.assertEqual(wrapper_exc_view(None, None), 'OK2')

    def test_add_view_multiview_call_ordering(self):
        from zope.interface import directlyProvides

        from pyramid.renderers import null_renderer as nr

        def view1(context, request):
            return 'view1'

        def view2(context, request):
            return 'view2'

        def view3(context, request):
            return 'view3'

        def view4(context, request):
            return 'view4'

        def view5(context, request):
            return 'view5'

        def view6(context, request):
            return 'view6'

        def view7(context, request):
            return 'view7'

        def view8(context, request):
            return 'view8'

        config = self._makeOne(autocommit=True)
        config.add_view(view=view1, renderer=nr)
        config.add_view(view=view2, request_method='POST', renderer=nr)
        config.add_view(view=view3, request_param='param', renderer=nr)
        config.add_view(view=view4, containment=IDummy, renderer=nr)
        config.add_view(
            view=view5,
            request_method='POST',
            request_param='param',
            renderer=nr,
        )
        config.add_view(
            view=view6, request_method='POST', containment=IDummy, renderer=nr
        )
        config.add_view(
            view=view7, request_param='param', containment=IDummy, renderer=nr
        )
        config.add_view(
            view=view8,
            request_method='POST',
            request_param='param',
            containment=IDummy,
            renderer=nr,
        )

        wrapper = self._getViewCallable(config)

        ctx = DummyContext()
        request = self._makeRequest(config)
        request.method = 'GET'
        request.params = {}
        self.assertEqual(wrapper(ctx, request), 'view1')

        ctx = DummyContext()
        request = self._makeRequest(config)
        request.params = {}
        request.method = 'POST'
        self.assertEqual(wrapper(ctx, request), 'view2')

        ctx = DummyContext()
        request = self._makeRequest(config)
        request.params = {'param': '1'}
        request.method = 'GET'
        self.assertEqual(wrapper(ctx, request), 'view3')

        ctx = DummyContext()
        directlyProvides(ctx, IDummy)
        request = self._makeRequest(config)
        request.method = 'GET'
        request.params = {}
        self.assertEqual(wrapper(ctx, request), 'view4')

        ctx = DummyContext()
        request = self._makeRequest(config)
        request.method = 'POST'
        request.params = {'param': '1'}
        self.assertEqual(wrapper(ctx, request), 'view5')

        ctx = DummyContext()
        directlyProvides(ctx, IDummy)
        request = self._makeRequest(config)
        request.params = {}
        request.method = 'POST'
        self.assertEqual(wrapper(ctx, request), 'view6')

        ctx = DummyContext()
        directlyProvides(ctx, IDummy)
        request = self._makeRequest(config)
        request.method = 'GET'
        request.params = {'param': '1'}
        self.assertEqual(wrapper(ctx, request), 'view7')

        ctx = DummyContext()
        directlyProvides(ctx, IDummy)
        request = self._makeRequest(config)
        request.method = 'POST'
        request.params = {'param': '1'}
        self.assertEqual(wrapper(ctx, request), 'view8')

    def test_view_with_most_specific_predicate(self):
        from pyramid.renderers import null_renderer as nr
        from pyramid.router import Router

        class OtherBase:
            pass

        class Int1:
            pass

        class Int2:
            pass

        class Resource(OtherBase, Int1, Int2):
            def __init__(self, request):
                pass

        def unknown(context, request):  # pragma: no cover
            return 'unknown'

        def view(context, request):
            return 'hello'

        config = self._makeOne(autocommit=True)
        config.add_route('root', '/', factory=Resource)
        config.add_view(unknown, route_name='root', renderer=nr)
        config.add_view(
            view,
            renderer=nr,
            route_name='root',
            context=Int1,
            request_method='GET',
        )
        config.add_view(
            view=view,
            renderer=nr,
            route_name='root',
            context=Int2,
            request_method='POST',
        )
        request = self._makeRequest(config)
        request.path_info = '/'
        request.method = 'POST'
        request.params = {}
        router = Router(config.registry)
        response = router.handle_request(request)
        self.assertEqual(response, 'hello')

    def test_view_with_most_specific_predicate_with_mismatch(self):
        from pyramid.renderers import null_renderer as nr
        from pyramid.router import Router

        class OtherBase:
            pass

        class Int1:
            pass

        class Int2:
            pass

        class Resource(OtherBase, Int1, Int2):
            def __init__(self, request):
                pass

        def unknown(context, request):  # pragma: no cover
            return 'unknown'

        def view(context, request):
            return 'hello'

        config = self._makeOne(autocommit=True)
        config.add_route('root', '/', factory=Resource)

        config.add_view(
            unknown,
            route_name='root',
            renderer=nr,
            request_method=('POST',),
            xhr=True,
        )

        config.add_view(
            view,
            renderer=nr,
            route_name='root',
            context=Int1,
            request_method='GET',
        )
        config.add_view(
            view=view,
            renderer=nr,
            route_name='root',
            context=Int2,
            request_method='POST',
        )
        request = self._makeRequest(config)
        request.path_info = '/'
        request.method = 'POST'
        request.params = {}
        router = Router(config.registry)
        response = router.handle_request(request)
        self.assertEqual(response, 'hello')

    def test_add_view_multiview___discriminator__(self):
        from zope.interface import Interface

        from pyramid.renderers import null_renderer

        class IFoo(Interface):
            pass

        class IBar(Interface):
            pass

        @implementer(IFoo)
        class Foo:
            pass

        @implementer(IBar)
        class Bar:
            pass

        foo = Foo()
        bar = Bar()

        from pyramid.interfaces import (
            IMultiView,
            IRequest,
            IView,
            IViewClassifier,
        )

        view = lambda *arg: 'OK'
        view.__phash__ = 'abc'
        config = self._makeOne(autocommit=True)
        config.registry.registerAdapter(
            view, (IViewClassifier, IRequest, Interface), IView, name=''
        )
        config.add_view(view=view, renderer=null_renderer, containment=IFoo)
        config.add_view(view=view, renderer=null_renderer, containment=IBar)
        wrapper = self._getViewCallable(config)
        self.assertTrue(IMultiView.providedBy(wrapper))
        request = self._makeRequest(config)
        self.assertNotEqual(
            wrapper.__discriminator__(foo, request),
            wrapper.__discriminator__(bar, request),
        )

    def test_add_view_with_template_renderer(self):
        from pyramid.interfaces import ISettings
        from tests import test_config

        class view:
            def __init__(self, context, request):
                self.request = request
                self.context = context

            def __call__(self):
                return {'a': '1'}

        config = self._makeOne(autocommit=True)
        renderer = self._registerRenderer(config)
        fixture = 'tests.test_config:files/minimal.txt'
        config.introspection = False
        config.add_view(view=view, renderer=fixture)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        result = wrapper(None, request)
        self.assertEqual(result.body, b'Hello!')
        settings = config.registry.queryUtility(ISettings)
        result = renderer.info
        self.assertEqual(result.registry, config.registry)
        self.assertEqual(result.type, '.txt')
        self.assertEqual(result.package, test_config)
        self.assertEqual(result.name, fixture)
        self.assertEqual(result.settings, settings)

    def test_add_view_with_default_renderer(self):
        class view:
            def __init__(self, context, request):
                self.request = request
                self.context = context

            def __call__(self):
                return {'a': '1'}

        config = self._makeOne(autocommit=True)

        class moo:
            def __init__(self, *arg, **kw):
                pass

            def __call__(self, *arg, **kw):
                return b'moo'

        config.add_renderer(None, moo)
        config.add_view(view=view)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        result = wrapper(None, request)
        self.assertEqual(result.body, b'moo')

    def test_add_view_with_template_renderer_no_callable(self):
        from pyramid.interfaces import ISettings
        from tests import test_config

        config = self._makeOne(autocommit=True)
        renderer = self._registerRenderer(config)
        fixture = 'tests.test_config:files/minimal.txt'
        config.introspection = False
        config.add_view(view=None, renderer=fixture)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        result = wrapper(None, request)
        self.assertEqual(result.body, b'Hello!')
        settings = config.registry.queryUtility(ISettings)
        result = renderer.info
        self.assertEqual(result.registry, config.registry)
        self.assertEqual(result.type, '.txt')
        self.assertEqual(result.package, test_config)
        self.assertEqual(result.name, fixture)
        self.assertEqual(result.settings, settings)

    def test_add_view_with_request_type_as_iface(self):
        from zope.interface import directlyProvides

        from pyramid.renderers import null_renderer

        def view(context, request):
            return 'OK'

        config = self._makeOne(autocommit=True)
        config.add_view(request_type=IDummy, view=view, renderer=null_renderer)
        wrapper = self._getViewCallable(config, None)
        request = self._makeRequest(config)
        directlyProvides(request, IDummy)
        result = wrapper(None, request)
        self.assertEqual(result, 'OK')

    def test_add_view_with_request_type_as_noniface(self):
        view = lambda *arg: 'OK'
        config = self._makeOne()
        self.assertRaises(
            ConfigurationError, config.add_view, view, '', None, None, object
        )

    def test_add_view_with_route_name(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_route('foo', '/a/b')
        config.add_view(view=view, route_name='foo', renderer=null_renderer)
        request_iface = self._getRouteRequestIface(config, 'foo')
        self.assertNotEqual(request_iface, None)
        wrapper = self._getViewCallable(config, request_iface=request_iface)
        self.assertNotEqual(wrapper, None)
        self.assertEqual(wrapper(None, None), 'OK')

    def test_add_view_with_nonexistant_route_name(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne()
        config.add_view(view=view, route_name='foo', renderer=null_renderer)
        self.assertRaises(ConfigurationExecutionError, config.commit)

    def test_add_view_with_route_name_exception(self):
        from zope.interface import implementedBy

        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_route('foo', '/a/b')
        config.add_view(
            view=view,
            route_name='foo',
            context=RuntimeError,
            renderer=null_renderer,
        )
        request_iface = self._getRouteRequestIface(config, 'foo')
        wrapper_exc_view = self._getViewCallable(
            config,
            exc_iface=implementedBy(RuntimeError),
            request_iface=request_iface,
        )
        self.assertNotEqual(wrapper_exc_view, None)
        wrapper = self._getViewCallable(
            config,
            ctx_iface=implementedBy(RuntimeError),
            request_iface=request_iface,
        )
        self.assertEqual(wrapper_exc_view, wrapper)
        self.assertEqual(wrapper_exc_view(None, None), 'OK')

    def test_add_view_with_request_method_true(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(
            view=view, request_method='POST', renderer=null_renderer
        )
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.method = 'POST'
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_with_request_method_false(self):
        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, request_method='POST')
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.method = 'GET'
        self._assertNotFound(wrapper, None, request)

    def test_add_view_with_request_method_sequence_true(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(
            view=view, request_method=('POST', 'GET'), renderer=null_renderer
        )
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.method = 'POST'
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_with_request_method_sequence_conflict(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne()
        config.add_view(
            view=view, request_method=('POST', 'GET'), renderer=null_renderer
        )
        config.add_view(
            view=view, request_method=('GET', 'POST'), renderer=null_renderer
        )
        self.assertRaises(ConfigurationConflictError, config.commit)

    def test_add_view_with_request_method_sequence_false(self):
        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, request_method=('POST', 'HEAD'))
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.method = 'GET'
        self._assertNotFound(wrapper, None, request)

    def test_add_view_with_request_method_get_implies_head(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(
            view=view, request_method='GET', renderer=null_renderer
        )
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.method = 'HEAD'
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_with_request_param_noval_true(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, request_param='abc', renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.params = {'abc': ''}
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_with_request_param_noval_false(self):
        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, request_param='abc')
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.params = {}
        self._assertNotFound(wrapper, None, request)

    def test_add_view_with_request_param_val_true(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(
            view=view, request_param='abc=123', renderer=null_renderer
        )
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.params = {'abc': '123'}
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_with_request_param_val_false(self):
        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, request_param='abc=123')
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.params = {'abc': ''}
        self._assertNotFound(wrapper, None, request)

    def test_add_view_with_xhr_true(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, xhr=True, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.is_xhr = True
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_with_xhr_false(self):
        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, xhr=True)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.is_xhr = False
        self._assertNotFound(wrapper, None, request)

    def test_add_view_with_is_authenticated_true_matches(self):
        from pyramid.renderers import null_renderer as nr

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, is_authenticated=True, renderer=nr)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.is_authenticated = True
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_with_is_authenticated_true_no_match(self):
        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, is_authenticated=True)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.is_authenticated = False
        self._assertNotFound(wrapper, None, request)

    def test_add_view_with_is_authenticated_false_matches(self):
        from pyramid.renderers import null_renderer as nr

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, is_authenticated=False, renderer=nr)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.is_authenticated = False
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_with_is_authenticated_false_no_match(self):
        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, is_authenticated=False)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.is_authenticated = True
        self._assertNotFound(wrapper, None, request)

    def test_add_view_with_header_badregex(self):
        view = lambda *arg: 'OK'
        config = self._makeOne()
        config.add_view(view, header='Host:a\\')
        self.assertRaises(ConfigurationError, config.commit)

    def test_add_view_with_header_noval_match(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, header='Host', renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.headers = {'Host': 'whatever'}
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_with_header_noval_nomatch(self):
        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, header='Host')
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.headers = {'NotHost': 'whatever'}
        self._assertNotFound(wrapper, None, request)

    def test_add_view_with_header_val_match(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, header=r'Host:\d', renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.headers = {'Host': '1'}
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_with_header_val_nomatch(self):
        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, header=r'Host:\d')
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.headers = {'Host': 'abc'}
        self._assertNotFound(wrapper, None, request)

    def test_add_view_with_header_val_missing(self):
        from pyramid.httpexceptions import HTTPNotFound

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, header=r'Host:\d')
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.headers = {'NoHost': '1'}
        self.assertRaises(HTTPNotFound, wrapper, None, request)

    def test_add_view_with_accept_match(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, accept='text/xml', renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.accept = DummyAccept('text/xml')
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_with_accept_nomatch(self):
        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, accept='text/xml')
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.accept = DummyAccept('text/html')
        self._assertNotFound(wrapper, None, request)

    def test_add_view_with_wildcard_accept_raises(self):
        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ValueError, lambda: config.add_view(view=view, accept='text/*')
        )

    def test_add_view_with_containment_true(self):
        from zope.interface import directlyProvides

        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, containment=IDummy, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        context = DummyContext()
        directlyProvides(context, IDummy)
        self.assertEqual(wrapper(context, None), 'OK')

    def test_add_view_with_containment_false(self):
        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, containment=IDummy)
        wrapper = self._getViewCallable(config)
        context = DummyContext()
        self._assertNotFound(wrapper, context, None)

    def test_add_view_with_containment_dottedname(self):
        from zope.interface import directlyProvides

        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(
            view=view,
            containment='tests.test_config.IDummy',
            renderer=null_renderer,
        )
        wrapper = self._getViewCallable(config)
        context = DummyContext()
        directlyProvides(context, IDummy)
        self.assertEqual(wrapper(context, None), 'OK')

    def test_add_view_with_path_info_badregex(self):
        view = lambda *arg: 'OK'
        config = self._makeOne()
        config.add_view(view, path_info='\\')
        self.assertRaises(ConfigurationError, config.commit)

    def test_add_view_with_path_info_match(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, path_info='/foo', renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.upath_info = text_(b'/foo')
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_with_path_info_nomatch(self):
        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(view=view, path_info='/foo')
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.upath_info = text_('/')
        self._assertNotFound(wrapper, None, request)

    def test_add_view_with_custom_predicates_match(self):
        import warnings

        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)

        def pred1(context, request):
            return True

        def pred2(context, request):
            return True

        predicates = (pred1, pred2)
        with warnings.catch_warnings(record=True) as w:
            warnings.filterwarnings('always')
            config.add_view(
                view=view, custom_predicates=predicates, renderer=null_renderer
            )
            self.assertEqual(len(w), 1)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_with_custom_predicates_nomatch(self):
        import warnings

        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)

        def pred1(context, request):
            return True

        def pred2(context, request):
            return False

        predicates = (pred1, pred2)
        with warnings.catch_warnings(record=True) as w:
            warnings.filterwarnings('always')
            config.add_view(view=view, custom_predicates=predicates)
            self.assertEqual(len(w), 1)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        self._assertNotFound(wrapper, None, request)

    def test_add_view_custom_predicate_bests_standard_predicate(self):
        import warnings

        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        view2 = lambda *arg: 'NOT OK'
        config = self._makeOne(autocommit=True)

        def pred1(context, request):
            return True

        with warnings.catch_warnings(record=True) as w:
            warnings.filterwarnings('always')
            config.add_view(
                view=view, custom_predicates=(pred1,), renderer=null_renderer
            )
            config.add_view(
                view=view2, request_method='GET', renderer=null_renderer
            )
            self.assertEqual(len(w), 1)
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.method = 'GET'
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_custom_more_preds_first_bests_fewer_preds_last(self):
        from pyramid.renderers import null_renderer

        view = lambda *arg: 'OK'
        view2 = lambda *arg: 'NOT OK'
        config = self._makeOne(autocommit=True)
        config.add_view(
            view=view, request_method='GET', xhr=True, renderer=null_renderer
        )
        config.add_view(
            view=view2, request_method='GET', renderer=null_renderer
        )
        wrapper = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.method = 'GET'
        request.is_xhr = True
        self.assertEqual(wrapper(None, request), 'OK')

    def test_add_view_same_predicates(self):
        view2 = lambda *arg: 'second'
        view1 = lambda *arg: 'first'
        config = self._makeOne()
        config.add_view(view=view1)
        config.add_view(view=view2)
        self.assertRaises(ConfigurationConflictError, config.commit)

    def test_add_view_with_csrf_param(self):
        from pyramid.renderers import null_renderer

        def view(request):
            return 'OK'

        config = self._makeOne(autocommit=True)
        config.add_view(view, require_csrf='st', renderer=null_renderer)
        view = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.scheme = "http"
        request.method = 'POST'
        request.POST = {'st': 'foo'}
        request.headers = {}
        request.session = DummySession({'csrf_token': 'foo'})
        self.assertEqual(view(None, request), 'OK')

    def test_add_view_with_csrf_header(self):
        from pyramid.renderers import null_renderer

        def view(request):
            return 'OK'

        config = self._makeOne(autocommit=True)
        config.add_view(view, require_csrf=True, renderer=null_renderer)
        view = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.scheme = "http"
        request.method = 'POST'
        request.POST = {}
        request.headers = {'X-CSRF-Token': 'foo'}
        request.session = DummySession({'csrf_token': 'foo'})
        self.assertEqual(view(None, request), 'OK')

    def test_add_view_with_missing_csrf_header(self):
        from pyramid.exceptions import BadCSRFToken
        from pyramid.renderers import null_renderer

        def view(request):  # pragma: no cover
            return 'OK'

        config = self._makeOne(autocommit=True)
        config.add_view(view, require_csrf=True, renderer=null_renderer)
        view = self._getViewCallable(config)
        request = self._makeRequest(config)
        request.scheme = "http"
        request.method = 'POST'
        request.POST = {}
        request.headers = {}
        request.session = DummySession({'csrf_token': 'foo'})
        self.assertRaises(BadCSRFToken, lambda: view(None, request))

    def test_add_view_with_permission(self):
        from pyramid.renderers import null_renderer

        view1 = lambda *arg: 'OK'
        outerself = self

        class DummyPolicy:
            def permits(self, r, context, permission):
                outerself.assertEqual(r, request)
                outerself.assertEqual(context, None)
                outerself.assertEqual(permission, 'view')
                return True

        policy = DummyPolicy()
        config = self._makeOne(security_policy=policy, autocommit=True)
        config.add_view(view=view1, permission='view', renderer=null_renderer)
        view = self._getViewCallable(config)
        request = self._makeRequest(config)
        self.assertEqual(view(None, request), 'OK')

    def test_add_view_with_default_permission_no_explicit_permission(self):
        from pyramid.renderers import null_renderer

        view1 = lambda *arg: 'OK'
        outerself = self

        class DummyPolicy:
            def permits(self, r, context, permission):
                outerself.assertEqual(r, request)
                outerself.assertEqual(context, None)
                outerself.assertEqual(permission, 'view')
                return True

        policy = DummyPolicy()
        config = self._makeOne(
            security_policy=policy, default_permission='view', autocommit=True
        )
        config.add_view(view=view1, renderer=null_renderer)
        view = self._getViewCallable(config)
        request = self._makeRequest(config)
        self.assertEqual(view(None, request), 'OK')

    def test_add_view_with_no_default_permission_no_explicit_permission(self):
        from pyramid.renderers import null_renderer

        view1 = lambda *arg: 'OK'

        class DummyPolicy:
            pass  # wont be called

        policy = DummyPolicy()
        config = self._makeOne(
            authorization_policy=policy,
            authentication_policy=policy,
            autocommit=True,
        )
        config.add_view(view=view1, renderer=null_renderer)
        view = self._getViewCallable(config)
        request = self._makeRequest(config)
        self.assertEqual(view(None, request), 'OK')

    def test_add_view_with_mapper(self):
        from pyramid.renderers import null_renderer

        class Mapper:
            def __init__(self, **kw):
                self.__class__.kw = kw

            def __call__(self, view):
                return view

        config = self._makeOne(autocommit=True)

        def view(context, request):
            return 'OK'

        config.add_view(view=view, mapper=Mapper, renderer=null_renderer)
        view = self._getViewCallable(config)
        self.assertEqual(view(None, None), 'OK')
        self.assertEqual(Mapper.kw['mapper'], Mapper)

    def test_add_view_with_view_defaults(self):
        from zope.interface import directlyProvides

        from pyramid.exceptions import PredicateMismatch
        from pyramid.renderers import null_renderer

        class view:
            __view_defaults__ = {'containment': 'tests.test_config.IDummy'}

            def __init__(self, request):
                pass

            def __call__(self):
                return 'OK'

        config = self._makeOne(autocommit=True)
        config.add_view(view=view, renderer=null_renderer)
        wrapper = self._getViewCallable(config)
        context = DummyContext()
        directlyProvides(context, IDummy)
        request = self._makeRequest(config)
        self.assertEqual(wrapper(context, request), 'OK')
        context = DummyContext()
        request = self._makeRequest(config)
        self.assertRaises(PredicateMismatch, wrapper, context, request)

    def test_add_view_with_view_defaults_viewname_is_dottedname_kwarg(self):
        from zope.interface import directlyProvides

        from pyramid.exceptions import PredicateMismatch
        from pyramid.renderers import null_renderer

        config = self._makeOne(autocommit=True)
        config.add_view(
            view='tests.test_config.test_views.DummyViewDefaultsClass',
            renderer=null_renderer,
        )
        wrapper = self._getViewCallable(config)
        context = DummyContext()
        directlyProvides(context, IDummy)
        request = self._makeRequest(config)
        self.assertEqual(wrapper(context, request), 'OK')
        context = DummyContext()
        request = self._makeRequest(config)
        self.assertRaises(PredicateMismatch, wrapper, context, request)

    def test_add_view_with_view_defaults_viewname_is_dottedname_nonkwarg(self):
        from zope.interface import directlyProvides

        from pyramid.exceptions import PredicateMismatch
        from pyramid.renderers import null_renderer

        config = self._makeOne(autocommit=True)
        config.add_view(
            'tests.test_config.test_views.DummyViewDefaultsClass',
            renderer=null_renderer,
        )
        wrapper = self._getViewCallable(config)
        context = DummyContext()
        directlyProvides(context, IDummy)
        request = self._makeRequest(config)
        self.assertEqual(wrapper(context, request), 'OK')
        context = DummyContext()
        request = self._makeRequest(config)
        self.assertRaises(PredicateMismatch, wrapper, context, request)

    def test_add_view_with_view_config_and_view_defaults_doesnt_conflict(self):
        from pyramid.renderers import null_renderer

        class view:
            __view_defaults__ = {'containment': 'tests.test_config.IDummy'}

        class view2:
            __view_defaults__ = {'containment': 'tests.test_config.IFactory'}

        config = self._makeOne(autocommit=False)
        config.add_view(view=view, renderer=null_renderer)
        config.add_view(view=view2, renderer=null_renderer)
        config.commit()  # does not raise

    def test_add_view_with_view_config_and_view_defaults_conflicts(self):
        from pyramid.renderers import null_renderer

        class view:
            __view_defaults__ = {'containment': 'tests.test_config.IDummy'}

        class view2:
            __view_defaults__ = {'containment': 'tests.test_config.IDummy'}

        config = self._makeOne(autocommit=False)
        config.add_view(view=view, renderer=null_renderer)
        config.add_view(view=view2, renderer=null_renderer)
        self.assertRaises(ConfigurationConflictError, config.commit)

    def test_add_view_class_method_no_attr(self):
        from pyramid.exceptions import ConfigurationError
        from pyramid.renderers import null_renderer

        config = self._makeOne(autocommit=True)

        class DummyViewClass:
            def run(self):  # pragma: no cover
                pass

        def configure_view():
            config.add_view(view=DummyViewClass.run, renderer=null_renderer)

        self.assertRaises(ConfigurationError, configure_view)

    def test_add_view_exception_only_no_regular_view(self):
        from zope.interface import implementedBy

        from pyramid.renderers import null_renderer

        view1 = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(
            view=view1,
            context=Exception,
            exception_only=True,
            renderer=null_renderer,
        )
        view = self._getViewCallable(
            config, ctx_iface=implementedBy(Exception)
        )
        self.assertTrue(view is None)

    def test_add_view_exception_only(self):
        from zope.interface import implementedBy

        from pyramid.renderers import null_renderer

        view1 = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_view(
            view=view1,
            context=Exception,
            exception_only=True,
            renderer=null_renderer,
        )
        view = self._getViewCallable(
            config, exc_iface=implementedBy(Exception)
        )
        self.assertEqual(view1, view)

    def test_add_view_exception_only_misconfiguration(self):
        view = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)

        class NotAnException:
            pass

        self.assertRaises(
            ConfigurationError,
            config.add_view,
            view,
            context=NotAnException,
            exception_only=True,
        )

    def test_add_exception_view(self):
        from zope.interface import implementedBy

        from pyramid.renderers import null_renderer

        view1 = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_exception_view(view=view1, renderer=null_renderer)
        wrapper = self._getViewCallable(
            config, exc_iface=implementedBy(Exception)
        )
        context = Exception()
        request = self._makeRequest(config)
        self.assertEqual(wrapper(context, request), 'OK')

    def test_add_exception_view_with_subclass(self):
        from zope.interface import implementedBy

        from pyramid.renderers import null_renderer

        view1 = lambda *arg: 'OK'
        config = self._makeOne(autocommit=True)
        config.add_exception_view(
            view=view1, context=ValueError, renderer=null_renderer
        )
        wrapper = self._getViewCallable(
            config, exc_iface=implementedBy(ValueError)
        )
        context = ValueError()
        request = self._makeRequest(config)
        self.assertEqual(wrapper(context, request), 'OK')

    def test_add_exception_view_disallows_name(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError,
            config.add_exception_view,
            context=Exception(),
            name='foo',
        )

    def test_add_exception_view_disallows_permission(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError,
            config.add_exception_view,
            context=Exception(),
            permission='foo',
        )

    def test_add_exception_view_disallows_require_csrf(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError,
            config.add_exception_view,
            context=Exception(),
            require_csrf=True,
        )

    def test_add_exception_view_disallows_for_(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError,
            config.add_exception_view,
            context=Exception(),
            for_='foo',
        )

    def test_add_exception_view_disallows_exception_only(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError,
            config.add_exception_view,
            context=Exception(),
            exception_only=True,
        )

    def test_add_exception_view_with_view_defaults(self):
        from zope.interface import directlyProvides, implementedBy

        from pyramid.exceptions import PredicateMismatch
        from pyramid.renderers import null_renderer

        class view:
            __view_defaults__ = {'containment': 'tests.test_config.IDummy'}

            def __init__(self, request):
                pass

            def __call__(self):
                return 'OK'

        config = self._makeOne(autocommit=True)
        config.add_exception_view(
            view=view, context=Exception, renderer=null_renderer
        )
        wrapper = self._getViewCallable(
            config, exc_iface=implementedBy(Exception)
        )
        context = DummyContext()
        directlyProvides(context, IDummy)
        request = self._makeRequest(config)
        self.assertEqual(wrapper(context, request), 'OK')
        context = DummyContext()
        request = self._makeRequest(config)
        self.assertRaises(PredicateMismatch, wrapper, context, request)

    def test_derive_view_function(self):
        from pyramid.renderers import null_renderer

        def view(request):
            return 'OK'

        config = self._makeOne()
        result = config.derive_view(view, renderer=null_renderer)
        self.assertFalse(result is view)
        self.assertEqual(result(None, None), 'OK')

    def test_derive_view_dottedname(self):
        from pyramid.renderers import null_renderer

        config = self._makeOne()
        result = config.derive_view(
            'tests.test_config.dummy_view', renderer=null_renderer
        )
        self.assertFalse(result is dummy_view)
        self.assertEqual(result(None, None), 'OK')

    def test_derive_view_with_default_renderer_no_explicit_renderer(self):
        config = self._makeOne()

        class moo:
            def __init__(self, view):
                pass

            def __call__(self, *arg, **kw):
                return 'moo'

        config.add_renderer(None, moo)
        config.commit()

        def view(request):
            return 'OK'

        result = config.derive_view(view)
        self.assertFalse(result is view)
        self.assertEqual(result(None, None).body, b'moo')

    def test_derive_view_with_default_renderer_with_explicit_renderer(self):
        class moo:
            pass

        class foo:
            def __init__(self, view):
                pass

            def __call__(self, *arg, **kw):
                return b'foo'

        def view(request):
            return 'OK'

        config = self._makeOne()
        config.add_renderer(None, moo)
        config.add_renderer('foo', foo)
        config.commit()
        result = config.derive_view(view, renderer='foo')
        self.assertFalse(result is view)
        request = self._makeRequest(config)
        self.assertEqual(result(None, request).body, b'foo')

    def test_add_static_view_here_no_utility_registered(self):
        from zope.interface import Interface

        from pyramid.interfaces import IView, IViewClassifier
        from pyramid.renderers import null_renderer

        config = self._makeOne(autocommit=True)
        config.add_static_view('static', 'files', renderer=null_renderer)
        request_type = self._getRouteRequestIface(config, '__static/')
        self._assertRoute(config, '__static/', 'static/*subpath')
        wrapped = config.registry.adapters.lookup(
            (IViewClassifier, request_type, Interface), IView, name=''
        )
        from pyramid.request import Request

        request = Request.blank('/static/minimal.txt')
        request.subpath = ('minimal.txt',)
        result = wrapped(None, request)
        self.assertEqual(result.status, '200 OK')
        self.assertTrue(result.body.startswith(b'<div'))

    def test_add_static_view_package_relative(self):
        from pyramid.interfaces import IStaticURLInfo

        info = DummyStaticURLInfo()
        config = self._makeOne(autocommit=True)
        config.registry.registerUtility(info, IStaticURLInfo)
        config.add_static_view('static', 'tests.test_config:files')
        self.assertEqual(
            info.added, [(config, 'static', 'tests.test_config:files', {})]
        )

    def test_add_static_view_package_here_relative(self):
        from pyramid.interfaces import IStaticURLInfo

        info = DummyStaticURLInfo()
        config = self._makeOne(autocommit=True)
        config.registry.registerUtility(info, IStaticURLInfo)
        config.add_static_view('static', 'files')
        self.assertEqual(
            info.added, [(config, 'static', 'tests.test_config:files', {})]
        )

    def test_add_static_view_absolute(self):
        import os

        from pyramid.interfaces import IStaticURLInfo

        info = DummyStaticURLInfo()
        config = self._makeOne(autocommit=True)
        config.registry.registerUtility(info, IStaticURLInfo)
        here = os.path.dirname(__file__)
        static_path = os.path.join(here, 'files')
        config.add_static_view('static', static_path)
        self.assertEqual(info.added, [(config, 'static', static_path, {})])

    def test_add_forbidden_view(self):
        from zope.interface import implementedBy

        from pyramid.httpexceptions import HTTPForbidden
        from pyramid.interfaces import IRequest
        from pyramid.renderers import null_renderer

        config = self._makeOne(autocommit=True)
        view = lambda *arg: 'OK'
        config.add_forbidden_view(view, renderer=null_renderer)
        request = self._makeRequest(config)
        view = self._getViewCallable(
            config,
            exc_iface=implementedBy(HTTPForbidden),
            request_iface=IRequest,
        )
        result = view(None, request)
        self.assertEqual(result, 'OK')

    def test_add_forbidden_view_no_view_argument(self):
        from zope.interface import implementedBy

        from pyramid.httpexceptions import HTTPForbidden
        from pyramid.interfaces import IRequest

        config = self._makeOne(autocommit=True)
        config.setup_registry()
        config.add_forbidden_view()
        request = self._makeRequest(config)
        view = self._getViewCallable(
            config,
            exc_iface=implementedBy(HTTPForbidden),
            request_iface=IRequest,
        )
        context = HTTPForbidden()
        result = view(context, request)
        self.assertEqual(result, context)

    def test_add_forbidden_view_allows_other_predicates(self):
        from pyramid.renderers import null_renderer

        config = self._makeOne(autocommit=True)
        # doesnt blow up
        config.add_view_predicate('dummy', DummyPredicate)
        config.add_forbidden_view(renderer=null_renderer, dummy='abc')

    def test_add_forbidden_view_disallows_name(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError, config.add_forbidden_view, name='foo'
        )

    def test_add_forbidden_view_disallows_permission(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError, config.add_forbidden_view, permission='foo'
        )

    def test_add_forbidden_view_disallows_require_csrf(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError, config.add_forbidden_view, require_csrf=True
        )

    def test_add_forbidden_view_disallows_context(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError, config.add_forbidden_view, context='foo'
        )

    def test_add_forbidden_view_disallows_for_(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError, config.add_forbidden_view, for_='foo'
        )

    def test_add_forbidden_view_with_view_defaults(self):
        from zope.interface import directlyProvides, implementedBy

        from pyramid.exceptions import PredicateMismatch
        from pyramid.httpexceptions import HTTPForbidden
        from pyramid.interfaces import IRequest
        from pyramid.renderers import null_renderer

        class view:
            __view_defaults__ = {'containment': 'tests.test_config.IDummy'}

            def __init__(self, request):
                pass

            def __call__(self):
                return 'OK'

        config = self._makeOne(autocommit=True)
        config.add_forbidden_view(view=view, renderer=null_renderer)
        wrapper = self._getViewCallable(
            config,
            exc_iface=implementedBy(HTTPForbidden),
            request_iface=IRequest,
        )
        context = DummyContext()
        directlyProvides(context, IDummy)
        request = self._makeRequest(config)
        self.assertEqual(wrapper(context, request), 'OK')
        context = DummyContext()
        request = self._makeRequest(config)
        self.assertRaises(PredicateMismatch, wrapper, context, request)

    def test_add_notfound_view(self):
        from zope.interface import implementedBy

        from pyramid.httpexceptions import HTTPNotFound
        from pyramid.interfaces import IRequest
        from pyramid.renderers import null_renderer

        config = self._makeOne(autocommit=True)
        view = lambda *arg: arg
        config.add_notfound_view(view, renderer=null_renderer)
        request = self._makeRequest(config)
        view = self._getViewCallable(
            config,
            exc_iface=implementedBy(HTTPNotFound),
            request_iface=IRequest,
        )
        result = view(None, request)
        self.assertEqual(result, (None, request))

    def test_add_notfound_view_no_view_argument(self):
        from zope.interface import implementedBy

        from pyramid.httpexceptions import HTTPNotFound
        from pyramid.interfaces import IRequest

        config = self._makeOne(autocommit=True)
        config.setup_registry()
        config.add_notfound_view()
        request = self._makeRequest(config)
        view = self._getViewCallable(
            config,
            exc_iface=implementedBy(HTTPNotFound),
            request_iface=IRequest,
        )
        context = HTTPNotFound()
        result = view(context, request)
        self.assertEqual(result, context)

    def test_add_notfound_view_allows_other_predicates(self):
        from pyramid.renderers import null_renderer

        config = self._makeOne(autocommit=True)
        # doesnt blow up
        config.add_view_predicate('dummy', DummyPredicate)
        config.add_notfound_view(renderer=null_renderer, dummy='abc')

    def test_add_notfound_view_disallows_name(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError, config.add_notfound_view, name='foo'
        )

    def test_add_notfound_view_disallows_permission(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError, config.add_notfound_view, permission='foo'
        )

    def test_add_notfound_view_disallows_require_csrf(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError, config.add_notfound_view, require_csrf=True
        )

    def test_add_notfound_view_disallows_context(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError, config.add_notfound_view, context='foo'
        )

    def test_add_notfound_view_disallows_for_(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError, config.add_notfound_view, for_='foo'
        )

    def test_add_notfound_view_append_slash(self):
        from zope.interface import implementedBy

        from pyramid.httpexceptions import HTTPNotFound, HTTPTemporaryRedirect
        from pyramid.interfaces import IRequest
        from pyramid.renderers import null_renderer
        from pyramid.response import Response

        config = self._makeOne(autocommit=True)
        config.add_route('foo', '/foo/')

        def view(request):  # pragma: no cover
            return Response('OK')

        config.add_notfound_view(
            view, renderer=null_renderer, append_slash=True
        )
        request = self._makeRequest(config)
        request.path_info = '/foo'
        request.query_string = 'a=1&b=2'
        request.path = '/scriptname/foo'
        view = self._getViewCallable(
            config,
            exc_iface=implementedBy(HTTPNotFound),
            request_iface=IRequest,
        )
        result = view(None, request)
        self.assertTrue(isinstance(result, HTTPTemporaryRedirect))
        self.assertEqual(result.location, '/scriptname/foo/?a=1&b=2')

    def test_add_notfound_view_append_slash_custom_response(self):
        from zope.interface import implementedBy

        from pyramid.httpexceptions import HTTPMovedPermanently, HTTPNotFound
        from pyramid.interfaces import IRequest
        from pyramid.renderers import null_renderer
        from pyramid.response import Response

        config = self._makeOne(autocommit=True)
        config.add_route('foo', '/foo/')

        def view(request):  # pragma: no cover
            return Response('OK')

        config.add_notfound_view(
            view, renderer=null_renderer, append_slash=HTTPMovedPermanently
        )
        request = self._makeRequest(config)
        request.path_info = '/foo'
        request.query_string = 'a=1&b=2'
        request.path = '/scriptname/foo'
        view = self._getViewCallable(
            config,
            exc_iface=implementedBy(HTTPNotFound),
            request_iface=IRequest,
        )
        result = view(None, request)
        self.assertTrue(isinstance(result, HTTPMovedPermanently))
        self.assertEqual(result.location, '/scriptname/foo/?a=1&b=2')

    def test_add_notfound_view_with_view_defaults(self):
        from zope.interface import directlyProvides, implementedBy

        from pyramid.exceptions import PredicateMismatch
        from pyramid.httpexceptions import HTTPNotFound
        from pyramid.interfaces import IRequest
        from pyramid.renderers import null_renderer

        class view:
            __view_defaults__ = {'containment': 'tests.test_config.IDummy'}

            def __init__(self, request):
                pass

            def __call__(self):
                return 'OK'

        config = self._makeOne(autocommit=True)
        config.add_notfound_view(view=view, renderer=null_renderer)
        wrapper = self._getViewCallable(
            config,
            exc_iface=implementedBy(HTTPNotFound),
            request_iface=IRequest,
        )
        context = DummyContext()
        directlyProvides(context, IDummy)
        request = self._makeRequest(config)
        self.assertEqual(wrapper(context, request), 'OK')
        context = DummyContext()
        request = self._makeRequest(config)
        self.assertRaises(PredicateMismatch, wrapper, context, request)

    def test_add_notfound_view_with_renderer(self):
        from zope.interface import implementedBy

        from pyramid.httpexceptions import HTTPNotFound
        from pyramid.interfaces import IRequest

        config = self._makeOne(autocommit=True)
        view = lambda *arg: {}
        config.introspection = False
        config.add_notfound_view(view, renderer='json')
        request = self._makeRequest(config)
        view = self._getViewCallable(
            config,
            exc_iface=implementedBy(HTTPNotFound),
            request_iface=IRequest,
        )
        result = view(None, request)
        self.assertEqual(result.text, '{}')

    def test_add_forbidden_view_with_renderer(self):
        from zope.interface import implementedBy

        from pyramid.httpexceptions import HTTPForbidden
        from pyramid.interfaces import IRequest

        config = self._makeOne(autocommit=True)
        view = lambda *arg: {}
        config.introspection = False
        config.add_forbidden_view(view, renderer='json')
        request = self._makeRequest(config)
        view = self._getViewCallable(
            config,
            exc_iface=implementedBy(HTTPForbidden),
            request_iface=IRequest,
        )
        result = view(None, request)
        self.assertEqual(result.text, '{}')

    def test_set_view_mapper(self):
        from pyramid.interfaces import IViewMapperFactory

        config = self._makeOne(autocommit=True)
        mapper = object()
        config.set_view_mapper(mapper)
        result = config.registry.getUtility(IViewMapperFactory)
        self.assertEqual(result, mapper)

    def test_set_view_mapper_dottedname(self):
        from pyramid.interfaces import IViewMapperFactory

        config = self._makeOne(autocommit=True)
        config.set_view_mapper('tests.test_config')
        result = config.registry.getUtility(IViewMapperFactory)
        from tests import test_config

        self.assertEqual(result, test_config)

    def test_add_normal_and_exception_view_intr_derived_callable(self):
        from pyramid.exceptions import BadCSRFToken
        from pyramid.renderers import null_renderer

        config = self._makeOne(autocommit=True)
        introspector = DummyIntrospector()
        config.introspector = introspector
        view = lambda r: 'OK'
        config.set_default_csrf_options(require_csrf=True)
        config.add_view(view, context=Exception, renderer=null_renderer)
        view_intr = introspector.introspectables[-1]
        self.assertTrue(view_intr.type_name, 'view')
        self.assertEqual(view_intr['callable'], view)
        derived_view = view_intr['derived_callable']

        request = self._makeRequest(config)
        request.method = 'POST'
        request.scheme = 'http'
        request.POST = {}
        request.headers = {}
        request.session = DummySession({'csrf_token': 'foo'})
        self.assertRaises(BadCSRFToken, lambda: derived_view(None, request))
        request.exception = Exception()
        self.assertEqual(derived_view(None, request), 'OK')

    def test_add_view_does_not_accept_iterable_accept(self):
        from pyramid.exceptions import ConfigurationError

        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ConfigurationError, config.add_view, accept=['image/*', 'text/*']
        )

    def test_default_accept_view_order(self):
        from pyramid.interfaces import IAcceptOrder

        config = self._makeOne(autocommit=True)
        order = config.registry.getUtility(IAcceptOrder)
        result = [v for _, v in order.sorted()]
        self.assertEqual(
            result,
            [
                'text/html',
                'application/xhtml+xml',
                'application/xml',
                'text/xml',
                'text/plain',
                'application/json',
            ],
        )

    def test_add_accept_view_order_override(self):
        from pyramid.interfaces import IAcceptOrder

        config = self._makeOne(autocommit=False)
        config.add_accept_view_order(
            'text/html',
            weighs_more_than='text/xml',
            weighs_less_than='application/xml',
        )
        config.commit()
        order = config.registry.getUtility(IAcceptOrder)
        result = [v for _, v in order.sorted()]
        self.assertEqual(
            result,
            [
                'application/xhtml+xml',
                'application/xml',
                'text/html',
                'text/xml',
                'text/plain',
                'application/json',
            ],
        )

    def test_add_accept_view_order_throws_on_wildcard(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(ValueError, config.add_accept_view_order, '*/*')

    def test_add_accept_view_order_throws_on_type_mismatch(self):
        config = self._makeOne(autocommit=True)
        self.assertRaises(
            ValueError,
            config.add_accept_view_order,
            'text/*',
            weighs_more_than='text/html',
        )
        self.assertRaises(
            ValueError,
            config.add_accept_view_order,
            'text/html',
            weighs_less_than='application/*',
        )
        self.assertRaises(
            ConfigurationError,
            config.add_accept_view_order,
            'text/html',
            weighs_more_than='text/html;charset=utf8',
        )
        self.assertRaises(
            ConfigurationError,
            config.add_accept_view_order,
            'text/html;charset=utf8',
            weighs_more_than='text/plain;charset=utf8',
        )

    def test_effective_principals_deprecated(self):
        config = self._makeOne(autocommit=True)

        with warnings.catch_warnings(record=True) as w:
            warnings.simplefilter('always', DeprecationWarning)
            config.add_view(lambda: None, effective_principals=['any'])
            self.assertIn(
                'deprecated effective_principals', str(w[-1].message)
            )


class Test_runtime_exc_view(unittest.TestCase):
    def _makeOne(self, view1, view2):
        from pyramid.config.views import runtime_exc_view

        return runtime_exc_view(view1, view2)

    def test_call(self):
        def view1(context, request):
            return 'OK'

        def view2(context, request):  # pragma: no cover
            raise AssertionError

        result_view = self._makeOne(view1, view2)
        request = DummyRequest()
        result = result_view(None, request)
        self.assertEqual(result, 'OK')

    def test_call_dispatches_on_exception(self):
        def view1(context, request):  # pragma: no cover
            raise AssertionError

        def view2(context, request):
            return 'OK'

        result_view = self._makeOne(view1, view2)
        request = DummyRequest()
        request.exception = Exception()
        result = result_view(None, request)
        self.assertEqual(result, 'OK')

    def test_permitted(self):
        def errfn(context, request):  # pragma: no cover
            raise AssertionError

        def view1(context, request):  # pragma: no cover
            raise AssertionError

        view1.__permitted__ = lambda c, r: 'OK'

        def view2(context, request):  # pragma: no cover
            raise AssertionError

        view2.__permitted__ = errfn
        result_view = self._makeOne(view1, view2)
        request = DummyRequest()
        result = result_view.__permitted__(None, request)
        self.assertEqual(result, 'OK')

    def test_permitted_dispatches_on_exception(self):
        def errfn(context, request):  # pragma: no cover
            raise AssertionError

        def view1(context, request):  # pragma: no cover
            raise AssertionError

        view1.__permitted__ = errfn

        def view2(context, request):  # pragma: no cover
            raise AssertionError

        view2.__permitted__ = lambda c, r: 'OK'
        result_view = self._makeOne(view1, view2)
        request = DummyRequest()
        request.exception = Exception()
        result = result_view.__permitted__(None, request)
        self.assertEqual(result, 'OK')


class Test_requestonly(unittest.TestCase):
    def _callFUT(self, view, attr=None):
        from pyramid.config.views import requestonly

        return requestonly(view, attr=attr)

    def test_defaults(self):
        def aview(request, a=1, b=2):  # pragma: no cover
            pass

        self.assertTrue(self._callFUT(aview))

    def test_otherattr(self):
        class AView:
            def __init__(self, request, a=1, b=2):  # pragma: no cover
                pass

            def bleh(self):  # pragma: no cover
                pass

        self.assertTrue(self._callFUT(AView, 'bleh'))


class Test_isexception(unittest.TestCase):
    def _callFUT(self, ob):
        from pyramid.config.views import isexception

        return isexception(ob)

    def test_is_exception_instance(self):
        class E(Exception):
            pass

        e = E()
        self.assertEqual(self._callFUT(e), True)

    def test_is_exception_class(self):
        class E(Exception):
            pass

        self.assertEqual(self._callFUT(E), True)

    def test_is_IException(self):
        from pyramid.interfaces import IException

        self.assertEqual(self._callFUT(IException), True)

    def test_is_IException_subinterface(self):
        from pyramid.interfaces import IException

        class ISubException(IException):
            pass

        self.assertEqual(self._callFUT(ISubException), True)


class TestMultiView(unittest.TestCase):
    def _getTargetClass(self):
        from pyramid.config.views import MultiView

        return MultiView

    def _makeOne(self, name='name'):
        return self._getTargetClass()(name)

    def test_class_implements_ISecuredView(self):
        from zope.interface.verify import verifyClass

        from pyramid.interfaces import ISecuredView

        verifyClass(ISecuredView, self._getTargetClass())

    def test_instance_implements_ISecuredView(self):
        from zope.interface.verify import verifyObject

        from pyramid.interfaces import ISecuredView

        verifyObject(ISecuredView, self._makeOne())

    def test_add(self):
        mv = self._makeOne()
        mv.add('view', 100)
        self.assertEqual(mv.views, [(100, 'view', None)])
        mv.add('view2', 99)
        self.assertEqual(mv.views, [(99, 'view2', None), (100, 'view', None)])
        mv.add('view3', 100, accept='text/html')
        self.assertEqual(mv.media_views['text/html'], [(100, 'view3', None)])
        mv.add('view4', 99, 'abc', accept='text/html')
        self.assertEqual(
            mv.media_views['text/html'],
            [(99, 'view4', 'abc'), (100, 'view3', None)],
        )
        mv.add('view5', 100, accept='text/xml')
        self.assertEqual(mv.media_views['text/xml'], [(100, 'view5', None)])
        self.assertEqual(set(mv.accepts), {'text/xml', 'text/html'})
        self.assertEqual(mv.views, [(99, 'view2', None), (100, 'view', None)])

    def test_add_with_phash(self):
        mv = self._makeOne()
        mv.add('view', 100, phash='abc')
        self.assertEqual(mv.views, [(100, 'view', 'abc')])
        mv.add('view', 100, phash='abc')
        self.assertEqual(mv.views, [(100, 'view', 'abc')])
        mv.add('view', 100, phash='def')
        self.assertEqual(
            mv.views, [(100, 'view', 'abc'), (100, 'view', 'def')]
        )
        mv.add('view', 100, phash='abc')
        self.assertEqual(
            mv.views, [(100, 'view', 'abc'), (100, 'view', 'def')]
        )

    def test_add_with_phash_override_accept(self):
        mv = self._makeOne()

        def view1():  # pragma: no cover
            pass

        def view2():  # pragma: no cover
            pass

        def view3():  # pragma: no cover
            pass

        mv.add(view1, 100, accept='text/html', phash='abc')
        mv.add(view2, 100, accept='text/html', phash='abc')
        mv.add(view3, 99, accept='text/html', phash='def')
        self.assertEqual(
            mv.media_views['text/html'],
            [(99, view3, 'def'), (100, view2, 'abc')],
        )

    def test_add_with_phash_override_accept2(self):
        mv = self._makeOne()

        def view1():  # pragma: no cover
            pass

        def view2():  # pragma: no cover
            pass

        def view3():  # pragma: no cover
            pass

        mv.add(view1, 100, accept='text/html', phash='abc')
        mv.add(view2, 100, accept='text/html', phash='def')
        mv.add(view3, 99, accept='text/html', phash='ghi')
        self.assertEqual(
            mv.media_views['text/html'],
            [(99, view3, 'ghi'), (100, view1, 'abc'), (100, view2, 'def')],
        )

    def test_multiple_with_functions_as_views(self):
        # this failed on py3 at one point, because functions aren't orderable
        # and we were sorting the views via a plain sort() rather than
        # sort(key=itemgetter(0)).
        def view1(request):  # pragma: no cover
            pass

        def view2(request):  # pragma: no cover
            pass

        mv = self._makeOne()
        mv.add(view1, 100, None)
        self.assertEqual(mv.views, [(100, view1, None)])
        mv.add(view2, 100, None)
        self.assertEqual(mv.views, [(100, view1, None), (100, view2, None)])

    def test_get_views_request_has_no_accept(self):
        request = DummyRequest()
        mv = self._makeOne()
        mv.views = [(99, lambda *arg: None)]
        self.assertEqual(mv.get_views(request), mv.views)

    def test_get_views_no_self_accepts(self):
        request = DummyRequest()
        request.accept = True
        mv = self._makeOne()
        mv.accepts = []
        mv.views = [(99, lambda *arg: None)]
        self.assertEqual(mv.get_views(request), mv.views)

    def test_get_views(self):
        request = DummyRequest()
        request.accept = DummyAccept('text/html')
        mv = self._makeOne()
        mv.accepts = ['text/html']
        mv.views = [(99, lambda *arg: None)]
        html_views = [(98, lambda *arg: None)]
        mv.media_views['text/html'] = html_views
        self.assertEqual(mv.get_views(request), html_views + mv.views)

    def test_get_views_best_match_returns_None(self):
        request = DummyRequest()
        request.accept = DummyAccept(None)
        mv = self._makeOne()
        mv.accepts = ['text/html']
        mv.views = [(99, lambda *arg: None)]
        self.assertEqual(mv.get_views(request), mv.views)

    def test_match_not_found(self):
        from pyramid.httpexceptions import HTTPNotFound

        mv = self._makeOne()
        context = DummyContext()
        request = DummyRequest()
        self.assertRaises(HTTPNotFound, mv.match, context, request)

    def test_match_predicate_fails(self):
        from pyramid.httpexceptions import HTTPNotFound

        mv = self._makeOne()

        def view(context, request):
            """ """

        view.__predicated__ = lambda *arg: False
        mv.views = [(100, view, None)]
        context = DummyContext()
        request = DummyRequest()
        self.assertRaises(HTTPNotFound, mv.match, context, request)

    def test_match_predicate_succeeds(self):
        mv = self._makeOne()

        def view(context, request):
            """ """

        view.__predicated__ = lambda *arg: True
        mv.views = [(100, view, None)]
        context = DummyContext()
        request = DummyRequest()
        result = mv.match(context, request)
        self.assertEqual(result, view)

    def test_permitted_no_views(self):
        from pyramid.httpexceptions import HTTPNotFound

        mv = self._makeOne()
        context = DummyContext()
        request = DummyRequest()
        self.assertRaises(HTTPNotFound, mv.__permitted__, context, request)

    def test_permitted_no_match_with__permitted__(self):
        mv = self._makeOne()

        def view(context, request):
            """ """

        mv.views = [(100, view, None)]
        self.assertEqual(mv.__permitted__(None, None), True)

    def test_permitted(self):
        mv = self._makeOne()

        def view(context, request):
            """ """

        def permitted(context, request):
            return False

        view.__permitted__ = permitted
        mv.views = [(100, view, None)]
        context = DummyContext()
        request = DummyRequest()
        result = mv.__permitted__(context, request)
        self.assertEqual(result, False)

    def test__call__not_found(self):
        from pyramid.httpexceptions import HTTPNotFound

        mv = self._makeOne()
        context = DummyContext()
        request = DummyRequest()
        self.assertRaises(HTTPNotFound, mv, context, request)

    def test___call__intermediate_not_found(self):
        from pyramid.exceptions import PredicateMismatch

        mv = self._makeOne()
        context = DummyContext()
        request = DummyRequest()
        request.view_name = ''
        expected_response = DummyResponse()

        def view1(context, request):
            raise PredicateMismatch

        def view2(context, request):
            return expected_response

        mv.views = [(100, view1, None), (99, view2, None)]
        response = mv(context, request)
        self.assertEqual(response, expected_response)

    def test___call__raise_not_found_isnt_interpreted_as_pred_mismatch(self):
        from pyramid.httpexceptions import HTTPNotFound

        mv = self._makeOne()
        context = DummyContext()
        request = DummyRequest()
        request.view_name = ''

        def view1(context, request):
            raise HTTPNotFound

        def view2(context, request):
            """ """

        mv.views = [(100, view1, None), (99, view2, None)]
        self.assertRaises(HTTPNotFound, mv, context, request)

    def test___call__(self):
        mv = self._makeOne()
        context = DummyContext()
        request = DummyRequest()
        request.view_name = ''
        expected_response = DummyResponse()

        def view(context, request):
            return expected_response

        mv.views = [(100, view, None)]
        response = mv(context, request)
        self.assertEqual(response, expected_response)

    def test__call_permissive__not_found(self):
        from pyramid.httpexceptions import HTTPNotFound

        mv = self._makeOne()
        context = DummyContext()
        request = DummyRequest()
        self.assertRaises(HTTPNotFound, mv, context, request)

    def test___call_permissive_has_call_permissive(self):
        mv = self._makeOne()
        context = DummyContext()
        request = DummyRequest()
        request.view_name = ''
        expected_response = DummyResponse()

        def view(context, request):
            """ """

        def permissive(context, request):
            return expected_response

        view.__call_permissive__ = permissive
        mv.views = [(100, view, None)]
        response = mv.__call_permissive__(context, request)
        self.assertEqual(response, expected_response)

    def test___call_permissive_has_no_call_permissive(self):
        mv = self._makeOne()
        context = DummyContext()
        request = DummyRequest()
        request.view_name = ''
        expected_response = DummyResponse()

        def view(context, request):
            return expected_response

        mv.views = [(100, view, None)]
        response = mv.__call_permissive__(context, request)
        self.assertEqual(response, expected_response)

    def test__call__with_accept_match(self):
        mv = self._makeOne()
        context = DummyContext()
        request = DummyRequest()
        request.accept = DummyAccept('text/html', 'text/xml')
        expected_response = DummyResponse()

        def view(context, request):
            return expected_response

        mv.views = [(100, None)]
        mv.media_views['text/xml'] = [(100, view, None)]
        mv.accepts = ['text/xml']
        response = mv(context, request)
        self.assertEqual(response, expected_response)

    def test__call__with_accept_miss(self):
        mv = self._makeOne()
        context = DummyContext()
        request = DummyRequest()
        request.accept = DummyAccept('text/plain', 'text/html')
        expected_response = DummyResponse()

        def view(context, request):
            return expected_response

        mv.views = [(100, view, None)]
        mv.media_views['text/xml'] = [(100, None, None)]
        mv.accepts = ['text/xml']
        response = mv(context, request)
        self.assertEqual(response, expected_response)


class TestDefaultViewMapper(unittest.TestCase):
    def setUp(self):
        self.config = testing.setUp()
        self.registry = self.config.registry

    def tearDown(self):
        del self.registry
        testing.tearDown()

    def _makeOne(self, **kw):
        from pyramid.config.views import DefaultViewMapper

        kw['registry'] = self.registry
        return DefaultViewMapper(**kw)

    def _makeRequest(self):
        request = DummyRequest()
        request.registry = self.registry
        return request

    def test_view_as_function_context_and_request(self):
        def view(context, request):
            return 'OK'

        mapper = self._makeOne()
        result = mapper(view)
        self.assertTrue(result is view)
        request = self._makeRequest()
        self.assertEqual(result(None, request), 'OK')

    def test__view_as_function_with_attr(self):
        def view(context, request):
            """ """

        mapper = self._makeOne(attr='__name__')
        result = mapper(view)
        self.assertFalse(result is view)
        request = self._makeRequest()
        self.assertRaises(TypeError, result, None, request)

    def test_view_as_function_requestonly(self):
        def view(request):
            return 'OK'

        mapper = self._makeOne()
        result = mapper(view)
        self.assertFalse(result is view)
        request = self._makeRequest()
        self.assertEqual(result(None, request), 'OK')

    def test_view_as_function_requestonly_with_attr(self):
        def view(request):
            """ """

        mapper = self._makeOne(attr='__name__')
        result = mapper(view)
        self.assertFalse(result is view)
        request = self._makeRequest()
        self.assertRaises(TypeError, result, None, request)

    def test_view_as_newstyle_class_context_and_request(self):
        class view:
            def __init__(self, context, request):
                pass

            def __call__(self):
                return 'OK'

        mapper = self._makeOne()
        result = mapper(view)
        self.assertFalse(result is view)
        request = self._makeRequest()
        self.assertEqual(result(None, request), 'OK')

    def test_view_as_newstyle_class_context_and_request_with_attr(self):
        class view:
            def __init__(self, context, request):
                pass

            def index(self):
                return 'OK'

        mapper = self._makeOne(attr='index')
        result = mapper(view)
        self.assertFalse(result is view)
        request = self._makeRequest()
        self.assertEqual(result(None, request), 'OK')

    def test_view_as_newstyle_class_requestonly(self):
        class view:
            def __init__(self, request):
                pass

            def __call__(self):
                return 'OK'

        mapper = self._makeOne()
        result = mapper(view)
        self.assertFalse(result is view)
        request = self._makeRequest()
        self.assertEqual(result(None, request), 'OK')

    def test_view_as_newstyle_class_requestonly_with_attr(self):
        class view:
            def __init__(self, request):
                pass

            def index(self):
                return 'OK'

        mapper = self._makeOne(attr='index')
        result = mapper(view)
        self.assertFalse(result is view)
        request = self._makeRequest()
        self.assertEqual(result(None, request), 'OK')

    def test_view_as_oldstyle_class_context_and_request(self):
        class view:
            def __init__(self, context, request):
                pass

            def __call__(self):
                return 'OK'

        mapper = self._makeOne()
        result = mapper(view)
        self.assertFalse(result is view)
        request = self._makeRequest()
        self.assertEqual(result(None, request), 'OK')

    def test_view_as_oldstyle_class_context_and_request_with_attr(self):
        class view:
            def __init__(self, context, request):
                pass

            def index(self):
                return 'OK'

        mapper = self._makeOne(attr='index')
        result = mapper(view)
        self.assertFalse(result is view)
        request = self._makeRequest()
        self.assertEqual(result(None, request), 'OK')

    def test_view_as_oldstyle_class_requestonly(self):
        class view:
            def __init__(self, request):
                pass

            def __call__(self):
                return 'OK'

        mapper = self._makeOne()
        result = mapper(view)
        self.assertFalse(result is view)
        request = self._makeRequest()
        self.assertEqual(result(None, request), 'OK')

    def test_view_as_oldstyle_class_requestonly_with_attr(self):
        class view:
            def __init__(self, request):
                pass

            def index(self):
                return 'OK'

        mapper = self._makeOne(attr='index')
        result = mapper(view)
        self.assertFalse(result is view)
        request = self._makeRequest()
        self.assertEqual(result(None, request), 'OK')

    def test_view_as_instance_context_and_request(self):
        class View:
            def __call__(self, context, request):
                return 'OK'

        view = View()
        mapper = self._makeOne()
        result = mapper(view)
        self.assertTrue(result is view)
        request = self._makeRequest()
        self.assertEqual(result(None, request), 'OK')

    def test_view_as_instance_context_and_request_and_attr(self):
        class View:
            def index(self, context, request):
                return 'OK'

        view = View()
        mapper = self._makeOne(attr='index')
        result = mapper(view)
        self.assertFalse(result is view)
        request = self._makeRequest()
        self.assertEqual(result(None, request), 'OK')

    def test_view_as_instance_requestonly(self):
        class View:
            def __call__(self, request):
                return 'OK'

        view = View()
        mapper = self._makeOne()
        result = mapper(view)
        self.assertFalse(result is view)
        request = self._makeRequest()
        self.assertEqual(result(None, request), 'OK')

    def test_view_as_instance_requestonly_with_attr(self):
        class View:
            def index(self, request):
                return 'OK'

        view = View()
        mapper = self._makeOne(attr='index')
        result = mapper(view)
        self.assertFalse(result is view)
        request = self._makeRequest()
        self.assertEqual(result(None, request), 'OK')


class Test_preserve_view_attrs(unittest.TestCase):
    def _callFUT(self, view, wrapped_view):
        from pyramid.config.views import preserve_view_attrs

        return preserve_view_attrs(view, wrapped_view)

    def test_it_same(self):
        def view(context, request):
            """ """

        result = self._callFUT(view, view)
        self.assertTrue(result is view)

    def test_it_view_is_None(self):
        def view(context, request):
            """ """

        result = self._callFUT(None, view)
        self.assertTrue(result is view)

    def test_it_different_with_existing_original_view(self):
        def view1(context, request):  # pragma: no cover
            pass

        view1.__original_view__ = 'abc'

        def view2(context, request):  # pragma: no cover
            pass

        result = self._callFUT(view1, view2)
        self.assertEqual(result.__original_view__, 'abc')
        self.assertFalse(result is view1)

    def test_it_different(self):
        class DummyView1:
            """1"""

            __name__ = '1'
            __module__ = '1'

            def __call__(self, context, request):
                """ """

            def __call_permissive__(self, context, request):
                """ """

            def __predicated__(self, context, request):
                """ """

            def __permitted__(self, context, request):
                """ """

        class DummyView2:
            """2"""

            __name__ = '2'
            __module__ = '2'

            def __call__(self, context, request):
                """ """

            def __call_permissive__(self, context, request):
                """ """

            def __predicated__(self, context, request):
                """ """

            def __permitted__(self, context, request):
                """ """

        view1 = DummyView1()
        view2 = DummyView2()
        result = self._callFUT(view2, view1)
        self.assertEqual(result, view1)
        self.assertTrue(view1.__original_view__ is view2)
        self.assertTrue(view1.__doc__ is view2.__doc__)
        self.assertTrue(view1.__module__ is view2.__module__)
        self.assertTrue(view1.__name__ is view2.__name__)
        self.assertTrue(
            getattr(view1.__call_permissive__, '__func__')
            is getattr(view2.__call_permissive__, '__func__')
        )
        self.assertTrue(
            getattr(view1.__permitted__, '__func__')
            is getattr(view2.__permitted__, '__func__')
        )
        self.assertTrue(
            getattr(view1.__predicated__, '__func__')
            is getattr(view2.__predicated__, '__func__')
        )


class TestStaticURLInfo(unittest.TestCase):
    def _getTargetClass(self):
        from pyramid.config.views import StaticURLInfo

        return StaticURLInfo

    def _makeOne(self):
        return self._getTargetClass()()

    def _makeRequest(self):
        request = DummyRequest()
        request.registry = DummyRegistry()
        return request

    def test_verifyClass(self):
        from zope.interface.verify import verifyClass

        from pyramid.interfaces import IStaticURLInfo

        verifyClass(IStaticURLInfo, self._getTargetClass())

    def test_verifyObject(self):
        from zope.interface.verify import verifyObject

        from pyramid.interfaces import IStaticURLInfo

        verifyObject(IStaticURLInfo, self._makeOne())

    def test_generate_missing(self):
        inst = self._makeOne()
        request = self._makeRequest()
        self.assertRaises(ValueError, inst.generate, 'path', request)

    def test_generate_registration_miss(self):
        inst = self._makeOne()
        inst.registrations = [
            (None, 'spec', 'route_name'),
            ('http://example.com/foo/', 'package:path/', None),
        ]
        request = self._makeRequest()
        result = inst.generate('package:path/abc', request)
        self.assertEqual(result, 'http://example.com/foo/abc')

    def test_generate_slash_in_name1(self):
        inst = self._makeOne()
        inst.registrations = [
            ('http://example.com/foo/', 'package:path/', None)
        ]
        request = self._makeRequest()
        result = inst.generate('package:path/abc', request)
        self.assertEqual(result, 'http://example.com/foo/abc')

    def test_generate_slash_in_name2(self):
        inst = self._makeOne()
        inst.registrations = [
            ('http://example.com/foo/', 'package:path/', None)
        ]
        request = self._makeRequest()
        result = inst.generate('package:path/', request)
        self.assertEqual(result, 'http://example.com/foo/')

    def test_generate_quoting(self):
        from pyramid.interfaces import IStaticURLInfo

        config = testing.setUp()
        try:
            config.add_static_view('images', path='mypkg:templates')
            request = testing.DummyRequest()
            request.registry = config.registry
            inst = config.registry.getUtility(IStaticURLInfo)
            result = inst.generate('mypkg:templates/foo%2Fbar', request)
            self.assertEqual(result, 'http://example.com/images/foo%252Fbar')
        finally:
            testing.tearDown()

    def test_generate_route_url(self):
        inst = self._makeOne()
        inst.registrations = [(None, 'package:path/', '__viewname/')]

        def route_url(n, **kw):
            self.assertEqual(n, '__viewname/')
            self.assertEqual(kw, {'subpath': 'abc', 'a': 1})
            return 'url'

        request = self._makeRequest()
        request.route_url = route_url
        result = inst.generate('package:path/abc', request, a=1)
        self.assertEqual(result, 'url')

    def test_generate_url_unquoted_local(self):
        inst = self._makeOne()
        inst.registrations = [(None, 'package:path/', '__viewname/')]

        def route_url(n, **kw):
            self.assertEqual(n, '__viewname/')
            self.assertEqual(kw, {'subpath': 'abc def', 'a': 1})
            return 'url'

        request = self._makeRequest()
        request.route_url = route_url
        result = inst.generate('package:path/abc def', request, a=1)
        self.assertEqual(result, 'url')

    def test_generate_url_quoted_remote(self):
        inst = self._makeOne()
        inst.registrations = [('http://example.com/', 'package:path/', None)]
        request = self._makeRequest()
        result = inst.generate('package:path/abc def', request, a=1)
        self.assertEqual(result, 'http://example.com/abc%20def')

    def test_generate_url_with_custom_query(self):
        inst = self._makeOne()
        registrations = [('http://example.com/', 'package:path/', None)]
        inst.registrations = registrations
        request = self._makeRequest()
        result = inst.generate(
            'package:path/abc def', request, a=1, _query='(openlayers)'
        )
        self.assertEqual(result, 'http://example.com/abc%20def?(openlayers)')

    def test_generate_url_with_custom_anchor(self):
        inst = self._makeOne()
        inst.registrations = [('http://example.com/', 'package:path/', None)]
        request = self._makeRequest()
        uc = text_(b'La Pe\xc3\xb1a', 'utf-8')
        result = inst.generate(
            'package:path/abc def', request, a=1, _anchor=uc
        )
        self.assertEqual(result, 'http://example.com/abc%20def#La%20Pe%C3%B1a')

    def test_generate_url_cachebust(self):
        def cachebust(request, subpath, kw):
            kw['foo'] = 'bar'
            return 'foo' + '/' + subpath, kw

        inst = self._makeOne()
        inst.registrations = [(None, 'package:path/', '__viewname')]
        inst.cache_busters = [('package:path/', cachebust, False)]
        request = self._makeRequest()
        called = [False]

        def route_url(n, **kw):
            called[0] = True
            self.assertEqual(n, '__viewname')
            self.assertEqual(
                kw,
                {
                    'subpath': 'foo/abc',
                    'foo': 'bar',
                    'pathspec': 'package:path/abc',
                    'rawspec': 'package:path/abc',
                },
            )

        request.route_url = route_url
        inst.generate('package:path/abc', request)
        self.assertTrue(called[0])

    def test_generate_url_cachebust_abspath(self):
        here = os.path.dirname(__file__) + os.sep

        def cachebust(pathspec, subpath, kw):
            kw['foo'] = 'bar'
            return 'foo' + '/' + subpath, kw

        inst = self._makeOne()
        inst.registrations = [(None, here, '__viewname')]
        inst.cache_busters = [(here, cachebust, False)]
        request = self._makeRequest()
        called = [False]

        def route_url(n, **kw):
            called[0] = True
            self.assertEqual(n, '__viewname')
            self.assertEqual(
                kw,
                {
                    'subpath': 'foo/abc',
                    'foo': 'bar',
                    'pathspec': here + 'abc',
                    'rawspec': here + 'abc',
                },
            )

        request.route_url = route_url
        inst.generate(here + 'abc', request)
        self.assertTrue(called[0])

    def test_generate_url_cachebust_nomatch(self):
        def fake_cb(*a, **kw):  # pragma: no cover
            raise AssertionError

        inst = self._makeOne()
        inst.registrations = [(None, 'package:path/', '__viewname')]
        inst.cache_busters = [('package:path2/', fake_cb, False)]
        request = self._makeRequest()
        called = [False]

        def route_url(n, **kw):
            called[0] = True
            self.assertEqual(n, '__viewname')
            self.assertEqual(
                kw,
                {
                    'subpath': 'abc',
                    'pathspec': 'package:path/abc',
                    'rawspec': 'package:path/abc',
                },
            )

        request.route_url = route_url
        inst.generate('package:path/abc', request)
        self.assertTrue(called[0])

    def test_generate_url_cachebust_with_overrides(self):
        config = testing.setUp()
        try:
            request = testing.DummyRequest()
            config.add_static_view('static', 'path')
            config.override_asset(
                'tests.test_config:path/', 'tests.test_config:other_path/'
            )

            def cb(val):
                def cb_(request, subpath, kw):
                    kw['_query'] = {'x': val}
                    return subpath, kw

                return cb_

            config.add_cache_buster('path', cb('foo'))
            result = request.static_url('path/foo.png')
            self.assertEqual(result, 'http://example.com/static/foo.png?x=foo')
            config.add_cache_buster('other_path', cb('bar'), explicit=True)
            result = request.static_url('path/foo.png')
            self.assertEqual(result, 'http://example.com/static/foo.png?x=bar')
        finally:
            testing.tearDown()

    def test_add_already_exists(self):
        config = DummyConfig()
        inst = self._makeOne()
        inst.registrations = [('http://example.com/', 'package:path/', None)]
        inst.add(config, 'http://example.com', 'anotherpackage:path')
        expected = [('http://example.com/', 'anotherpackage:path/', None)]
        self.assertEqual(inst.registrations, expected)

    def test_add_package_root(self):
        config = DummyConfig()
        inst = self._makeOne()
        inst.add(config, 'http://example.com', 'package:')
        expected = [('http://example.com/', 'package:', None)]
        self.assertEqual(inst.registrations, expected)

    def test_add_url_withendslash(self):
        config = DummyConfig()
        inst = self._makeOne()
        inst.add(config, 'http://example.com/', 'anotherpackage:path')
        expected = [('http://example.com/', 'anotherpackage:path/', None)]
        self.assertEqual(inst.registrations, expected)

    def test_add_url_noendslash(self):
        config = DummyConfig()
        inst = self._makeOne()
        inst.add(config, 'http://example.com', 'anotherpackage:path')
        expected = [('http://example.com/', 'anotherpackage:path/', None)]
        self.assertEqual(inst.registrations, expected)

    def test_add_url_noscheme(self):
        config = DummyConfig()
        inst = self._makeOne()
        inst.add(config, '//example.com', 'anotherpackage:path')
        expected = [('//example.com/', 'anotherpackage:path/', None)]
        self.assertEqual(inst.registrations, expected)

    def test_add_viewname(self):
        from pyramid.security import NO_PERMISSION_REQUIRED
        from pyramid.static import static_view

        config = DummyConfig()
        inst = self._makeOne()
        inst.add(config, 'view', 'anotherpackage:path', cache_max_age=1)
        expected = [(None, 'anotherpackage:path/', '__view/')]
        self.assertEqual(inst.registrations, expected)
        self.assertEqual(config.route_args, ('__view/', 'view/*subpath'))
        self.assertEqual(config.view_kw['permission'], NO_PERMISSION_REQUIRED)
        self.assertEqual(config.view_kw['view'].__class__, static_view)

    def test_add_viewname_with_route_prefix(self):
        config = DummyConfig()
        config.route_prefix = '/abc'
        inst = self._makeOne()
        inst.add(config, 'view', 'anotherpackage:path')
        expected = [(None, 'anotherpackage:path/', '__/abc/view/')]
        self.assertEqual(inst.registrations, expected)
        self.assertEqual(config.route_args, ('__/abc/view/', 'view/*subpath'))

    def test_add_viewname_with_permission(self):
        config = DummyConfig()
        inst = self._makeOne()
        inst.add(
            config,
            'view',
            'anotherpackage:path',
            cache_max_age=1,
            permission='abc',
        )
        self.assertEqual(config.view_kw['permission'], 'abc')

    def test_add_viewname_with_context(self):
        config = DummyConfig()
        inst = self._makeOne()
        inst.add(
            config,
            'view',
            'anotherpackage:path',
            cache_max_age=1,
            context=DummyContext,
        )
        self.assertEqual(config.view_kw['context'], DummyContext)

    def test_add_viewname_with_for_(self):
        config = DummyConfig()
        inst = self._makeOne()
        inst.add(
            config,
            'view',
            'anotherpackage:path',
            cache_max_age=1,
            for_=DummyContext,
        )
        self.assertEqual(config.view_kw['context'], DummyContext)

    def test_add_viewname_with_renderer(self):
        config = DummyConfig()
        inst = self._makeOne()
        inst.add(
            config,
            'view',
            'anotherpackage:path',
            cache_max_age=1,
            renderer='mypackage:templates/index.pt',
        )
        self.assertEqual(
            config.view_kw['renderer'], 'mypackage:templates/index.pt'
        )

    def test_add_cachebust_prevented(self):
        config = DummyConfig()
        config.registry.settings['pyramid.prevent_cachebust'] = True
        inst = self._makeOne()
        cachebust = DummyCacheBuster('foo')
        inst.add_cache_buster(config, 'mypackage:path', cachebust)
        self.assertEqual(inst.cache_busters, [])

    def test_add_cachebuster(self):
        config = DummyConfig()
        inst = self._makeOne()
        inst.add_cache_buster(
            config, 'mypackage:path', DummyCacheBuster('foo')
        )
        cachebust = inst.cache_busters[-1][1]
        subpath, kw = cachebust(None, 'some/path', {})
        self.assertEqual(subpath, 'some/path')
        self.assertEqual(kw['x'], 'foo')

    def test_add_cachebuster_abspath(self):
        here = os.path.dirname(__file__)
        config = DummyConfig()
        inst = self._makeOne()
        cb = DummyCacheBuster('foo')
        inst.add_cache_buster(config, here, cb)
        self.assertEqual(inst.cache_busters, [(here + os.sep, cb, False)])

    def test_add_cachebuster_overwrite(self):
        config = DummyConfig()
        inst = self._makeOne()
        cb1 = DummyCacheBuster('foo')
        cb2 = DummyCacheBuster('bar')
        inst.add_cache_buster(config, 'mypackage:path/', cb1)
        inst.add_cache_buster(config, 'mypackage:path', cb2)
        self.assertEqual(inst.cache_busters, [('mypackage:path/', cb2, False)])

    def test_add_cachebuster_overwrite_explicit(self):
        config = DummyConfig()
        inst = self._makeOne()
        cb1 = DummyCacheBuster('foo')
        cb2 = DummyCacheBuster('bar')
        inst.add_cache_buster(config, 'mypackage:path/', cb1)
        inst.add_cache_buster(config, 'mypackage:path', cb2, True)
        self.assertEqual(
            inst.cache_busters,
            [('mypackage:path/', cb1, False), ('mypackage:path/', cb2, True)],
        )

    def test_add_cachebuster_for_more_specific_path(self):
        config = DummyConfig()
        inst = self._makeOne()
        cb1 = DummyCacheBuster('foo')
        cb2 = DummyCacheBuster('bar')
        cb3 = DummyCacheBuster('baz')
        cb4 = DummyCacheBuster('xyz')
        cb5 = DummyCacheBuster('w')
        inst.add_cache_buster(config, 'mypackage:path', cb1)
        inst.add_cache_buster(config, 'mypackage:path/sub', cb2, True)
        inst.add_cache_buster(config, 'mypackage:path/sub/other', cb3)
        inst.add_cache_buster(config, 'mypackage:path/sub/other', cb4, True)
        inst.add_cache_buster(config, 'mypackage:path/sub/less', cb5, True)
        self.assertEqual(
            inst.cache_busters,
            [
                ('mypackage:path/', cb1, False),
                ('mypackage:path/sub/other/', cb3, False),
                ('mypackage:path/sub/', cb2, True),
                ('mypackage:path/sub/less/', cb5, True),
                ('mypackage:path/sub/other/', cb4, True),
            ],
        )


class Test_view_description(unittest.TestCase):
    def _callFUT(self, view):
        from pyramid.config.views import view_description

        return view_description(view)

    def test_with_text(self):
        def view():  # pragma: no cover
            pass

        view.__text__ = 'some text'
        result = self._callFUT(view)
        self.assertEqual(result, 'some text')

    def test_without_text(self):
        def view():  # pragma: no cover
            pass

        result = self._callFUT(view)
        self.assertEqual(result, 'function tests.test_config.test_views.view')


class DummyRegistry:
    utility = None

    def __init__(self):
        self.settings = {
            'pyramid.reload_assets': False,
        }

    def queryUtility(self, type_or_iface, name=None, default=None):
        return self.utility or default


@implementer(IResponse)
class DummyResponse:
    content_type = None
    default_content_type = None
    body = None


class DummyRequest:
    subpath = ()
    matchdict = None
    request_iface = IRequest
    application_url = 'http://example.com/foo'

    def __init__(self, environ=None):
        if environ is None:
            environ = {}
        self.environ = environ
        self.params = {}
        self.cookies = {}
        self.response = DummyResponse()


class DummyContext:
    pass


class DummyAccept:
    def __init__(self, *matches, **kw):
        self.matches = list(matches)
        self.contains = kw.pop('contains', False)

    def acceptable_offers(self, offers):
        results = []
        for match in self.matches:
            if match in offers:
                results.append((match, 1.0))
        return results


class DummyConfig:
    def __init__(self):
        self.registry = DummyRegistry()

    route_prefix = ''

    def add_route(self, *args, **kw):
        self.route_args = args
        self.route_kw = kw

    def add_view(self, *args, **kw):
        self.view_args = args
        self.view_kw = kw

    def action(self, discriminator, callable, introspectables=()):
        callable()

    def introspectable(self, *arg):
        return {}


@implementer(IMultiView)
class DummyMultiView:
    def __init__(self):
        self.views = []
        self.name = 'name'

    def add(self, view, order, phash=None, accept=None, accept_order=None):
        self.views.append((view, phash, accept, accept_order))

    def __call__(self, context, request):
        return 'OK1'

    def __permitted__(self, context, request):
        """ """


class DummyCacheBuster:
    def __init__(self, token):
        self.token = token

    def __call__(self, request, subpath, kw):
        kw['x'] = self.token
        return subpath, kw


def parse_httpdate(s):
    import datetime

    # cannot use %Z, must use literal GMT; Jython honors timezone
    # but CPython does not
    return datetime.datetime.strptime(s, "%a, %d %b %Y %H:%M:%S GMT")


def assert_similar_datetime(one, two):
    for attr in ('year', 'month', 'day', 'hour', 'minute'):
        one_attr = getattr(one, attr)
        two_attr = getattr(two, attr)
        if not one_attr == two_attr:  # pragma: no cover
            raise AssertionError(f'{one_attr!r} != {two_attr!r} in {attr}')


class DummyStaticURLInfo:
    def __init__(self):
        self.added = []

    def add(self, config, name, spec, **kw):
        self.added.append((config, name, spec, kw))


class DummyViewDefaultsClass:
    __view_defaults__ = {'containment': 'tests.test_config.IDummy'}

    def __init__(self, request):
        pass

    def __call__(self):
        return 'OK'


class DummyPredicate:
    def __init__(self, val, config):
        self.val = val

    def text(self):
        return 'dummy'

    phash = text


class DummyIntrospector:
    def __init__(self, getval=None):
        self.related = []
        self.introspectables = []
        self.getval = getval

    def add(self, introspectable):
        self.introspectables.append(introspectable)

    def get(self, name, discrim):
        return self.getval

    def relate(self, a, b):
        self.related.append((a, b))


class DummySession(dict):
    def get_csrf_token(self):
        return self['csrf_token']