diff --git a/tests/test_repomap.py b/tests/test_repomap.py
index e69de29bb..09f50e8b6 100644
--- a/tests/test_repomap.py
+++ b/tests/test_repomap.py
@@ -0,0 +1,31 @@
+import os
+import unittest
+from aider.repomap import RepoMap
+
+class TestRepoMap(unittest.TestCase):
+    def test_get_tags_map(self):
+        # Create a temporary directory with sample files for testing
+        test_files = [
+            "test_file1.py",
+            "test_file2.py",
+            "test_file3.md",
+            "test_file4.json",
+        ]
+
+        with tempfile.TemporaryDirectory() as temp_dir:
+            for file in test_files:
+                with open(os.path.join(temp_dir, file), "w") as f:
+                    f.write("")
+
+            repo_map = RepoMap(root=temp_dir)
+            other_files = [os.path.join(temp_dir, file) for file in test_files]
+            result = repo_map.get_tags_map(other_files)
+
+            # Check if the result contains the expected tags map
+            self.assertIn("test_file1.py:", result)
+            self.assertIn("test_file2.py:", result)
+            self.assertNotIn("test_file3.md:", result)
+            self.assertNotIn("test_file4.json:", result)
+
+if __name__ == "__main__":
+    unittest.main()