assertNotNull(retrieved);
        assertEquals(engine, retrieved);
    }

    // Test add method with null name
    @Test
    public void test_add_nullName() {
        TestScriptEngine engine = new TestScriptEngine();
        try {
            scriptEngineFactory.add(null, engine);
            fail("Should throw IllegalArgumentException for null name");

        assertSame(dataStore, dataStoreFactory.getDataStore("TestDataStore"));
    }

    // Test add method with null name
    @Test
    public void test_add_nullName() {
        TestDataStore dataStore = new TestDataStore("TestStore");
        try {
            dataStoreFactory.add(null, dataStore);
            fail("Should throw IllegalArgumentException");