@Test
    public void test_add_validParameters() {
        TestScriptEngine engine = new TestScriptEngine();
        scriptEngineFactory.add("testEngine", engine);

        // Verify engine is accessible by name
        ScriptEngine retrieved = scriptEngineFactory.getScriptEngine("testengine");
        assertNotNull(retrieved);
        assertEquals(engine, retrieved);

        // Verify engine is accessible by class simple name

        // Setup test script engine
        scriptEngineFactory.add("TestEngine", testScriptEngine);

        // Execute with different case variations
        Object result1 = scriptExecutor.execute("testengine", "script1");
        assertEquals("processed: script1", result1);

        Object result2 = scriptExecutor.execute("TESTENGINE", "script2");
        assertEquals("processed: script2", result2);

        // Test various case combinations
        ScriptEngine lowerCase = scriptEngineFactory.getScriptEngine("testengine");
        ScriptEngine upperCase = scriptEngineFactory.getScriptEngine("TESTENGINE");
        ScriptEngine mixedCase = scriptEngineFactory.getScriptEngine("TestEngine");

        assertNotNull(lowerCase);
        assertNotNull(upperCase);
        assertNotNull(mixedCase);

        assertTrue(testEngine.logScriptExecutionCalled);
        assertEquals("return 1", testEngine.lastLoggedScript);
        assertEquals("success", testEngine.lastLoggedResult);
    }

    /**
     * Test that logScriptExecution records success result
     */
    @Test
    public void test_logScriptExecution_success() {