assertNull(groovyEngine.evaluate("  \t\n  ", params));
    }

    /**
     * Test that evaluate handles null paramMap safely
     */
    @Test
    public void test_evaluate_nullParamMap() {
        assertEquals("test", groovyEngine.evaluate("return 'test'", null));
        assertEquals(123, groovyEngine.evaluate("return 123", null));
    }

    /**