diff --git a/tests/test_other_functions.py b/tests/test_demos.py
similarity index 86%
rename from tests/test_other_functions.py
rename to tests/test_demos.py
index b788c666db459758424d2ad0fb6e85219296bae1..c933f8fa8f83abf534a8acdcc4a697ba87b7a983 100644
--- a/tests/test_other_functions.py
+++ b/tests/test_demos.py
@@ -8,5 +8,5 @@ class TestCaseDemoFunction(unittest.TestCase):
     def test_demo_function(self):
         # flip test image
         self.assertTrue(
-            a_demo_function(1) is None
+            a_demo_function(None) == 1
         )