Method test_undo_roundtrip

tests/test_patch.py:33–41

(self)

        self.assertIn("[ERROR] String not found", res)

    def test_undo_roundtrip(self):
        # Initial state
        initial_content = self.test_file.read_text()
        # Patch
        tool_patch_file(str(self.test_file), "line 1", "LINE 1")
        self.assertEqual(self.test_file.read_text(), "LINE 1\nline 2\nline 2\nline 3")
        # Undo
        undo(str(self.test_file))
        self.assertEqual(self.test_file.read_text(), initial_content)

if __name__ == "__main__":
    unittest.main()