diff --git a/test_lingoanki/test_lingoanki.py b/test_lingoanki/test_lingoanki.py
new file mode 100644
index 0000000..6db433f
--- /dev/null
+++ b/test_lingoanki/test_lingoanki.py
@@ -0,0 +1,22 @@
+import unittest
+
+from lingoanki.__main__ import generate_unique_id
+
+
+class TestGenerateUniqueId(unittest.TestCase):
+    def test_generate_unique_id_default_length(self):
+        # Arrange
+        input_string = "test_string"
+        expected_length = 9
+
+        # Act
+        result = generate_unique_id(input_string)
+
+        # Assert
+        self.assertEqual(len(str(result)), expected_length)
+        self.assertTrue(isinstance(result, int))
+        self.assertEqual(result, 723598865)
+
+
+if __name__ == "__main__":
+    unittest.main()