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

    // Test add with special characters in name
    public void test_add_specialCharactersInName() {
        TestScriptEngine engine = new TestScriptEngine();
        scriptEngineFactory.add("test-engine.v1", engine);

        ScriptEngine retrieved = scriptEngineFactory.getScriptEngine("test-engine.v1");