diff --git a/tests/test_output_dir.py b/tests/test_output_dir.py
index aebb3a0..3d64332 100644
--- a/tests/test_output_dir.py
+++ b/tests/test_output_dir.py
@@ -29,7 +29,7 @@ class TestFindComfyuiOutputDir(unittest.TestCase):
         roots = patch.object(
             GalleryConfig,
             "allowed_gallery_parents",
-            return_value=[tempfile.gettempdir()],
+            return_value=[os.path.normcase(os.path.realpath(tempfile.gettempdir()))],
         )
         roots.start()
         self.addCleanup(roots.stop)
@@ -121,5 +121,22 @@ class TestFindComfyuiOutputDir(unittest.TestCase):
             self.assertEqual(result, str(Path(tmpdir).resolve()))
 
 
+class TestOutputDirectoryFixturePortability(unittest.TestCase):
+    def test_aliased_temporary_parent_uses_the_real_gallery_allowlist(self):
+        with tempfile.TemporaryDirectory() as directory:
+            parent = Path(directory)
+            (parent / "alias").mkdir()
+            (parent / "actual").mkdir()
+            aliased = str(parent / "alias" / ".." / "actual")
+            with patch("tempfile.gettempdir", return_value=aliased):
+                case = TestFindComfyuiOutputDir(
+                    "test_configured_directory_takes_priority"
+                )
+                result = unittest.TestResult()
+                case.run(result)
+            self.assertEqual(result.errors, [])
+            self.assertEqual(result.failures, [])
+
+
 if __name__ == "__main__":
     unittest.main()