} catch (ScriptEngineException e) {
            assertEquals("nonexistent is not found.", e.getMessage());
        }
    }

    // Test getScriptEngine with empty string
    public void test_getScriptEngine_emptyString() {
        try {
            scriptEngineFactory.getScriptEngine("");
            fail("Should throw ScriptEngineException for empty string");
        } catch (ScriptEngineException e) {