Add meta-test to verify every generated locale is loadable

Author: akx

tests/conftest.py

@@ -7,3 +7,9 @@ def os_environ(monkeypatch):
     mock_environ = dict(os.environ)
     monkeypatch.setattr(os, 'environ', mock_environ)
     return mock_environ
+
+
+def pytest_generate_tests(metafunc):
+    if hasattr(metafunc.function, "all_locales"):
+        from babel.localedata import locale_identifiers
+        metafunc.parametrize("locale", list(locale_identifiers()))

tests/test_locale_load.py

@@ -0,0 +1,8 @@
+# -*- coding: utf-8 -*-
+import pytest
+from babel import Locale
+
+
+@pytest.mark.all_locales
+def test_locale_load(locale):
+    assert str(Locale.parse(locale)) == locale