Clear global cache in test_get_available_languages1.3.1

The test_get_available_languages test assumes that
get_available_languages() has not been called prior to the test.
That is, it assumes that the global variable
_gettextutils._AVAILABLE_LANGUAGES does not already have a domain's
languages cached in it.  This causes problems if another test case
uses get_available_languages().  In order to properly isolate this
test case, it is updated to clear the cache prior to testing.

Change-Id: Ie04d7d98b51f4cc3cc9f0eda69425349e0801d6f

1 files changed, 3 insertions, 0 deletions

diff --git a/oslo_i18n/tests/test_gettextutils.py b/oslo_i18n/tests/test_gettextutils.py
index f433700..6f0d5c5 100644
--- a/oslo_i18n/tests/test_gettextutils.py
+++ b/oslo_i18n/tests/test_gettextutils.py
@@ -103,6 +103,9 @@ class GettextTest(test_base.BaseTestCase):
             return None
         self.stubs.Set(gettext, 'find', _mock_gettext_find)
 
+        # Ensure that no domains are cached
+        _gettextutils._AVAILABLE_LANGUAGES = {}
+
         # en_US should always be available no matter the domain
         # and it should also always be the first element since order matters
         domain_1_languages = _gettextutils.get_available_languages('domain_1')