Question

我正在尝试编写一个不使用ZUL文件的测试用例。我有一个非常基本的功能，包括以下几行。

初始化列表框的类：

public class TestComposer {

    public void listboxTest(){

        ListModelList model = new ListModelList();
        Listbox lbOne = new Listbox();
        lbOne.setModel(model);
        lbOne.setMultiple(true);

        System.out.println(lbOne); 

        System.out.println(model); 

    }

}

试验情况下

public class testSuit {
    static ZatsEnvironment env; 

    @BeforeClass
    public static void init() {
        System.out.println("Setting server space.");
        env = new DefaultZatsEnvironment("/main/webapp/WEB-INF");
        env.init("/main/webapp");           

    }

    @AfterClass
    public static void end() {
        env.destroy();
    }

    @After
    public void after() {
        env.cleanup();
    }

    @Test
    public void test() {
        TestComposer tc = new TestComposer();

        tc.listboxTest();
    }
}

这段代码将产生一个空指针异常。它表明lbOne为null。有没有办法在不调用/使用ZUL文件的情况下使用列表框？

堆栈追踪：

java.lang.NullPointerException  at 
org.zkoss.zk.ui.event.Events.postEvent(Events.java:383)     at 
org.zkoss.zk.ui.event.Events.postEvent(Events.java:432)     at 
org.zkoss.zk.ui.event.Events.postEvent(Events.java:366)     at 
org.zkoss.zul.Listbox.postOnInitRender(Listbox.java:2501)   at 
org.zkoss.zul.Listbox.setModel(Listbox.java:2266)   at 
test.TestComposer.listboxTest(TestComposer.java:12)     at 
test.testSuit.test(testSuit.java:75)    at 
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at 
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)     at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)     at 
java.lang.reflect.Method.invoke(Unknown Source)     at 
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)    at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)     at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)  at 
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)   at 
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)     at 
org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)   at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)   at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)   at 
org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)     at 
org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)     at 
org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)   at 
org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)     at 
org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)    at 
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)   at 
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)     at 
org.junit.runners.ParentRunner.run(ParentRunner.java:309)   at 
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)     at 
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)  at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)  at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)  at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)   at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

NPE错误的线/迹线

test.TestComposer.listboxTest(TestComposer.java:12) at test.testSuit.test(testSuit.java:75) at 
lbOne.setModel(model);

PS：我正在使用ZK Web框架。我使用的测试工具无法捕获zats模拟环境中的痕迹。因此，我想直接调用这些方法而不依赖于ZUL文件。

Answer 1

使用这个策略怎么样：

public void listboxTest(){

    ListModelList model = new ListModelList();
    Listbox lbOne = new Listbox();
    lbOne.setModel(model);
    lbOne.setMultiple(true);

    System.out.println(lbOne); 

    System.out.println(model); 

}

Answer 2

如果您以MVC模式进行开发，则您的~/PyCharmProjects应该扩展.idea。请阅读MVC tutorial
您应该使用zul测试作曲家，而不是自己创建实例。例如，您应该将作曲家应用于某个组件，然后运行ZATS客户端来访问zul。请阅读First Mimic Test Case

zk中的列表框空指针异常

2 个答案: