test: add test for building with unicode filenames

Author: bpabel

tests/samples/packageunicode/packageunicode/Noël.jpg

@@ -0,0 +1,5 @@
+"""
+Short Description
+"""
+
+__version__ = "1.0.0"

tests/samples/packageunicode/packageunicode/__init__.py

@@ -0,0 +1,9 @@
+[build-system]
+requires = ["flit_core >=2,<4"]
+build-backend = "flit_core.buildapi"
+
+[tool.flit.metadata]
+module = "packageunicode"
+author = "Sir Robin"
+author-email = "robin@camelot.uk"
+home-page = "http://github.com/sirrobin/package2"

tests/samples/packageunicode/pyproject.toml

@@ -1,3 +1,5 @@
+# -*- coding: utf-8 -*-
+
 from pathlib import Path
 import pytest
 import shutil
@@ -12,6 +14,7 @@
 
 LIST_FILES_TEMPLATE = """\
 #!{python}
+# -*- coding: utf-8 -*-
 import sys
 from os.path import join
 if '--deleted' not in sys.argv:
@@ -69,3 +72,22 @@ def test_build_module_no_docstring():
             with pytest.raises(common.NoDocstringError) as exc_info:
                 build.main(pyproject)
             assert 'no_docstring.py' in str(exc_info.value)
+
+def test_build_package_with_unicode(copy_sample):
+    list_files_template = """\
+#!{python}
+# -*- coding: utf-8 -*-
+import sys
+from os.path import join
+if '--deleted' not in sys.argv:
+    files = ['pyproject.toml', 'packageunicode/__init__.py', 'packageunicode/Noël.jpg']
+    print('\\0'.join(files), end='\\0')
+"""
+    td = copy_sample('packageunicode')
+    (td / '.git').mkdir()  # Fake a git repo
+
+    with MockCommand('git', list_files_template.format(python=sys.executable)):
+        res = build.main(td / 'pyproject.toml', formats={'sdist'})
+
+    # Compare str path to work around pathlib/pathlib2 mismatch on Py 3.5
+    assert [str(p) for p in (td / 'dist').iterdir()] == [str(res.sdist.file)]