Fix conftest.py compatibility with pytest 4.3

While pytest in tox.ini is explicitly set to be 3.3.2, in Fedora 31
we are about to update to a newer version of pytest.
In order to be able to test babel, we need pytest 4.3 support.

This adds support for pytest 4.3 without breaking support for 3.3.2.

1 files changed, 6 insertions, 3 deletions

diff --git a/tests/conftest.py b/tests/conftest.py
index be93b2b..5b14b1c 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -10,6 +10,9 @@ def os_environ(monkeypatch):
 
 
 def pytest_generate_tests(metafunc):
-    if hasattr(metafunc.function, "all_locales"):
-        from babel.localedata import locale_identifiers
-        metafunc.parametrize("locale", list(locale_identifiers()))
+    if hasattr(metafunc.function, "pytestmark"):
+        for mark in metafunc.function.pytestmark:
+            if mark.name == "all_locales":
+                from babel.localedata import locale_identifiers
+                metafunc.parametrize("locale", list(locale_identifiers()))
+                break