Update paths_cli/tests/test_utils.py

Co-authored-by: Sander Roet <sanderroet@hotmail.com>

Author: dwhswenson

paths_cli/tests/test_utils.py

@@ -26,6 +26,7 @@ def test_add_existing(self):
     def test_contains(self):
         assert 'a' in self.set
         assert not 'q' in self.set
+        assert 'q' not in self.set
 
     def test_discard(self):
         self.set.discard('a')