Fix invalid well_known url in drf spectacular schema

README.md

@@ -31,6 +31,7 @@ If you are not satisfied with the default configuration, take a look at the cook
 - Easy configuration through premade `Provider` classes (see the list [here](https://django-pyoidc.readthedocs.io/latest/reference.html#providers))
 - Authenticate users from multiple providers
 - Bearer authentication support for [django-rest-framework](https://www.django-rest-framework.org/) integration (**single provider**)
+  - [drf-spectacular](https://drf-spectacular.readthedocs.io/en/latest/customization.html) : your swagger page will allow to connect to your OIDC provider
 - Easy integration with the [Django permission system](https://django-pyoidc.readthedocs.io/latest/how-to.html#use-the-django-permission-system-with-oidc)
 - Highly customizable design that should suit most needs
 - Support back-channel logout

django_pyoidc/apps.py

@@ -0,0 +1,9 @@
+from django.apps import AppConfig
+
+
+class DjangoPyoidcConfig(AppConfig):
+    name = "django_pyoidc"
+
+    def ready(self) -> None:
+        # Register schema with drf_spectacular
+        from .drf import schema  # noqa: F401

django_pyoidc/drf/schema.py

@@ -13,11 +13,16 @@ class OIDCScheme(OpenApiAuthenticationExtension):  # type: ignore[no-untyped-cal
         match_subclasses = True
         priority = -1
 
-        def get_security_definition(self, auto_schema):  # type: ignore[no-untyped-def] # we do not want to type third party libraries
+        @classmethod
+        def get_security_definition(cls, auto_schema):  # type: ignore[no-untyped-def] # we do not want to type third party libraries
             # from django_pyoidc.drf.authentication import OIDCBearerAuthentication
 
             opsettings = OIDCSettingsFactory.get("drf")
-            well_known_url = opsettings.get("provider_discovery_uri")
+            well_known_url: str = opsettings.get("provider_discovery_uri")  # type: ignore[assignment] # we can assume that this is an str
+            if not well_known_url.endswith(".well-known/openid-configuration"):
+                well_known_url = (
+                    well_known_url + "/.well-known/openid-configuration"
+                )  # well_known_url should not end with a "/" as it is sanitized
 
             header_name = opsettings.get("oidc_api_bearer_name", "Bearer")
             if header_name != "Bearer":

tests/tests_schema.py

@@ -0,0 +1,30 @@
+from unittest import mock
+
+from django.test import TestCase
+
+from django_pyoidc.drf.schema import OIDCScheme
+
+
+class OIDCShemaTestCase(TestCase):
+
+    @mock.patch("django_pyoidc.drf.schema.OIDCSettingsFactory.get")
+    def test_security_definition_no_well_known_endpoint(self, mocked_get_settings):
+        mocked_get_settings.return_value = {
+            "provider_discovery_uri": "https://sso.demo/realms/test"
+        }
+        result = OIDCScheme.get_security_definition(None)
+        self.assertEqual(
+            result["openIdConnectUrl"],
+            "https://sso.demo/realms/test/.well-known/openid-configuration",
+        )
+
+    @mock.patch("django_pyoidc.drf.schema.OIDCSettingsFactory.get")
+    def test_security_definition_with_well_known_endpoint(self, mocked_get_settings):
+        mocked_get_settings.return_value = {
+            "provider_discovery_uri": "https://sso.demo/realms/test/.well-known/openid-configuration"
+        }
+        result = OIDCScheme.get_security_definition(None)
+        self.assertEqual(
+            result["openIdConnectUrl"],
+            "https://sso.demo/realms/test/.well-known/openid-configuration",
+        )