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-rw-r--r--test/test_utils.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/test/test_utils.py b/test/test_utils.py
index 6c8571f98..c3e387cd0 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -2110,6 +2110,8 @@ Line 1
self.assertEqual(traverse_obj(_TEST_DATA, (..., {str_or_none})),
[item for item in map(str_or_none, _TEST_DATA.values()) if item is not None],
msg='Function in set should be a transformation')
+ self.assertEqual(traverse_obj(_TEST_DATA, ('fail', {lambda _: 'const'})), 'const',
+ msg='Function in set should always be called')
if __debug__:
with self.assertRaises(Exception, msg='Sets with length != 1 should raise in debug'):
traverse_obj(_TEST_DATA, set())