java - 单元测试 ModalWindow 的内容刷新失败，而实际功能按预期工作 - 我做错了什么？

Question

所以，我先花了几个小时尝试自己“修复”这个问题，然后像疯子一样在谷歌上搜索，但没有找到任何有帮助的东西，所以现在我在这里。

基本上，我在 Wicket 自己的 ModalWindow 中有一个自定义 Panel，并且由于我喜欢单元测试，所以我想测试它。这里的具体行为是刷新 ModalWindow 的内容:在我提取此内容的实际代码中，Ajax 事件处理实际上将新内容重新加载到内容面板，我只是删除了这些内容以使其更短。

所以，这是面板的代码

package wicket.components;

import org.apache.wicket.ajax.AjaxRequestTarget;

import org.apache.wicket.ajax.markup.html.form.AjaxButton;
import org.apache.wicket.extensions.ajax.markup.html.modal.ModalWindow;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.model.*;

public class MyModalWindowPanel extends Panel {

    private Form form;
    private ModalWindow modal;

    public MyModalWindowPanel(String id, ModalWindow modal) {
        super(id);

        this.setOutputMarkupId(true);
        this.modal = modal;

        initializeForm();    
        addBasicDataFieldsToForm();    
        add(campaignForm);
    }

    private void initializeForm() {
        form = new Form("form");
        form.setOutputMarkupId(true);
    }

    private void addBasicDataFieldsToForm() {
        campaignForm.add(new AjaxButton("infoSubmit",
                         new Model<String>("Ajaxy Click")) {

            protected void onSubmit(AjaxRequestTarget target, Form<?> form) {

                modal.setContent(new MyModalWindowPanel(modal.getContentId(),
                                                        modal));

                modal.show(target);
            }
        });
    }
}

以及相应的标记

<wicket:panel>
    <form wicket:id="form">
        <input type="submit" value="Ajaxy Click" wicket:id="infoSubmit" />
    </form>
</wicket:panel>

请注意，当在 Tomcat 等 servlet 容器中运行时，它可以正常工作 - 这里没有功能错误!

那么问题出在哪里呢？我似乎无法通过单元测试来使其发挥作用!我的面板测试类如下所示

package wicket.components;

import org.apache.wicket.extensions.ajax.markup.html.modal.ModalWindow;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.util.tester.*;
import junit.framework.TestCase;

public class MyModalWindowPanelTestCase extends TestCase {

    private WicketTester tester;    
    private ModalWindow modal;

    @Override
    protected void setUp() throws Exception {
        tester = new WicketTester();    
        modal = new ModalWindow("modal");

        tester.startPanel(new TestPanelSource() {

            public Panel getTestPanel(String id) {    
                return new MyModalWindowPanel(id, modal);
            }
        });
    }

    public void testReloadingPanelWorks() throws Exception {
        // the next line fails!
        tester.executeAjaxEvent("panel:campaignForm:campaignInfoSubmit",
                                "onclick");
        tester.assertNoErrorMessage();
    }
}

这是运行该命令的堆栈跟踪结果

java.lang.IllegalStateException: No Page found for component [MarkupContainer [Component id = modal]]
    at org.apache.wicket.Component.getPage(Component.java:1763)
    at org.apache.wicket.RequestCycle.urlFor(RequestCycle.java:872)
    at org.apache.wicket.Component.urlFor(Component.java:3295)
    at org.apache.wicket.behavior.AbstractAjaxBehavior.getCallbackUrl(AbstractAjaxBehavior.java:124)
    at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.getCallbackScript(AbstractDefaultAjaxBehavior.java:118)
    at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.getCallbackScript(AbstractDefaultAjaxBehavior.java:106)
    at org.apache.wicket.extensions.ajax.markup.html.modal.ModalWindow$WindowClosedBehavior.getCallbackScript(ModalWindow.java:927)
    at org.apache.wicket.extensions.ajax.markup.html.modal.ModalWindow.getWindowOpenJavascript(ModalWindow.java:1087)
    at org.apache.wicket.extensions.ajax.markup.html.modal.ModalWindow.show(ModalWindow.java:352)
    at wicket.components.MyModalWindowPanel$1.onSubmit(MyModalWindowPanel.java:45)
    at org.apache.wicket.ajax.markup.html.form.AjaxButton$1.onSubmit(AjaxButton.java:102)
    at org.apache.wicket.ajax.form.AjaxFormSubmitBehavior.onEvent(AjaxFormSubmitBehavior.java:143)
    at org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:177)
    at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:299)
    at org.apache.wicket.util.tester.BaseWicketTester.executeAjaxEvent(BaseWicketTester.java:1236)
    at org.apache.wicket.util.tester.BaseWicketTester.executeAjaxEvent(BaseWicketTester.java:1109)
    at wicket.components.MyModalWindowPanelTestCase.testReloadingPanelWorks(MyModalWindowPanelPanelTestCase.java:31)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at junit.framework.TestCase.runTest(TestCase.java:168)
    at junit.framework.TestCase.runBare(TestCase.java:134)
    at junit.framework.TestResult$1.protect(TestResult.java:110)
    at junit.framework.TestResult.runProtected(TestResult.java:128)
    at junit.framework.TestResult.run(TestResult.java:113)
    at junit.framework.TestCase.run(TestCase.java:124)
    at junit.framework.TestSuite.runTest(TestSuite.java:232)
    at junit.framework.TestSuite.run(TestSuite.java:227)
    at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:81)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

那么，我该如何/应该修复我的单元测试以使其通过？

Answer 1

我要冒险说:将您的面板组件添加到页面进行测试..

据我所知，您无法测试单个组件，但应该通过获取页​​面并对其进行断言来设置测试..

这是我用于测试的:

public class TestHomePage {
    private static WicketTester tester;

    @BeforeClass
    public static void setUp() {
        tester = new WicketTester(new WicketApplication() {
            @Override
            protected void init() {
                //Override init to use SpringUtil's SpringContext due to missing WebApplicationContext
                addComponentInstantiationListener(new SpringComponentInjector(this, SpringUtil.getContext()));
            }
        });
    }

    @Test
    public void testRenderMyPage() {
        //start and render the test page
        tester.startPage(HomePage.class);

        //assert rendered page class
        tester.assertRenderedPage(HomePage.class);

        //assert page contents
        tester.assertContains("Welcome to my webpage");
    }
}

如有错误，请指正!