[1.8.x] Fixed #26046 -- Fixed a crash with translations and Django-unknown language code

Thanks Jens Lundstrom for the report and Tim Graham for the review.
Backport of 632a9f21bc from master.

1 files changed, 4 insertions, 0 deletions

diff --git a/tests/i18n/tests.py b/tests/i18n/tests.py
index 9a20ba5d32..715057844f 100644
--- a/tests/i18n/tests.py
+++ b/tests/i18n/tests.py
@@ -1273,6 +1273,10 @@ class TestLanguageInfo(TestCase):
 
     def test_unknown_language_code(self):
         six.assertRaisesRegex(self, KeyError, r"Unknown language code xx\.", get_language_info, 'xx')
+        with translation.override('xx'):
+            # A language with no translation catalogs should fallback to the
+            # untranslated string.
+            self.assertEqual(ugettext("Title"), "Title")
 
     def test_unknown_only_country_code(self):
         li = get_language_info('de-xx')