使用 JUnit4 运行 Ant PDE 测试

Question

我正在尝试使用 pde-maven-plugin、maven 调用或 ant 任务自动化 pde 测试。我按照文章Automating Eclipse PDE Unit Tests using Ant 中的说明创建了test.xml

测试失败，首先是因为没有找到测试

junit.framework.AssertionFailedError: junit.framework.AssertionFailedError: No tests found in com.example.TestSuite
    at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)

我搜索并发现我应该使用JUnit4Adapter，但这样做我得到了ClassCastException，这是堆栈跟踪

java.lang.ClassCastException: junit.framework.JUnit4TestAdapter cannot be cast to junit.framework.Test
    at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestLoader.getTest(JUnit3TestLoader.java:108)
    at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestLoader.loadTests(JUnit3TestLoader.java:59)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:452)
    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.pde.internal.junit.runtime.RemotePluginTestRunner.main(RemotePluginTestRunner.java:62)
    at org.eclipse.pde.internal.junit.runtime.CoreTestApplication.run(CoreTestApplication.java:23)
    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 org.eclipse.equinox.internal.app.EclipseAppContainer.callMethodWithException(EclipseAppContainer.java:574)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    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 org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1287)

这是我的插件依赖项：

Require-Bundle: 
 org.eclipse.ui,
 org.eclipse.core.runtime,
 org.eclipse.jdt.core;bundle-version="3.4.2",
 org.eclipse.jdt.launching;bundle-version="3.4.1",
 org.eclipse.core.resources;bundle-version="3.4.1",
 org.apache.xerces;bundle-version="2.9.0",
 org.junit4;bundle-version="4.3.1"

和测试类

package com.example;

import junit.framework.JUnit4TestAdapter;
import junit.framework.Test;

import org.junit.runner.RunWith;
import org.junit.runners.Suite;
import org.junit.runners.Suite.SuiteClasses;

@RunWith(Suite.class)
@SuiteClasses( { SimpleTests.class})
public class TestSuite {

    public static Test suite() {

        return new JUnit4TestAdapter(TestSuite.class);
    }

}

知道如何解决吗？

Answer 1

通过在调用 org.eclipse.equinox.launcher.Main 时添加下一行来修复：

<arg line="-testLoaderClass org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader"/>
<arg line="-loaderpluginname org.eclipse.jdt.junit4.runtime"/>

这是完整的 java ant 任务：

<java dir="${plugin.dir}"  
    fork="yes"
    classname="org.eclipse.equinox.launcher.Main"
    classpathref="equinox.launcher.class.path"
    jvm="${jvm}">
    <arg line="-application ${application}"/>
    <arg line="-data ${test.reports.dir}/output/ws"/>
    <arg line="-port ${pde.test.port}"/>
    <arg line="-dev bin -clean -debug"/>
    <arg line="-testpluginname ${plugin.name}"/>
    <arg line="-testLoaderClass org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader"/>
    <arg line="-loaderpluginname org.eclipse.jdt.junit4.runtime"/>
    <arg line="-classnames ${test.classes.list}"/>
    <jvmarg line="${vmargs}"/>
</java>    

Answer 2

我遇到了与 Noura 相同的问题，并尝试了他们提供的修复程序，不幸的是，它只解决了部分问题。尽管我的 29 个测试都用@Test 仔细注释，但我没有抛出上述ClassCastException，而是得到junit4 java.lang.Exception: No runnable methods。

经过几个小时的搜索（并且只在 JUnit 4 是新的时候才发现真正的旧错误）和试验（this SO post 也没有帮助），我发现我的修复的第二部分与类路径有关.

我已将我的类路径（用于启动 PDETestResultsCollector、PDETestPortLocator 和测试插件）定义为：

<path id="test.class.path">
   <pathelement location="build/my-bundled-jar-with-tests.jar" /> <!-- contains my app and the PDE* helper classes -->
   <fileset dir="${test.eclipse.dir}/plugins">
      <include name="org.junit_4.*/**/junit.jar" />
      <include name="org.hamcrest.core_*.jar" />
      <include name="org.apache.ant_*/**/ant.jar" />
      <include name="org.apache.ant_*/**/ant-junit.jar" />
      <include name="org.eclipse.jdt.core_*.jar" />
      <include name="org.eclipse.jdt.junit_*.jar" />
      <include name="org.eclipse.jdt.junit.core_*.jar" />
      <include name="org.eclipse.equinox.common_*.jar" />
      <include name="org.eclipse.debug.core_*.jar" />
      <include name="org.eclipse.osgi_*.jar" />
      <include name="org.eclipse.core.resources_*.jar" />
      <include name="org.eclipse.core.runtime_*.jar" />
      <include name="org.eclipse.core.jobs_*.jar" />
      <include name="org.eclipse.ui.workbench_*.jar" />
      <include name="org.eclipse.swt_*.jar" />
      <include name="org.eclipse.equinox.preferences_*.jar" />
      <include name="org.eclipse.equinox.launcher_*.jar" />
   </fileset>
</path>

并像这样启动它：

<java classpathref="test.class.path" classname="org.eclipse.equinox.launcher.Main" fork="yes" dir="${basedir}" >
   <arg line="-application org.eclipse.pde.junit.runtime.uitestapplication" />
   <arg line="-data reports/output/ws" />
   <arg line="-dev bin -clean -port ${pde.test.port}" />
   <arg line="-testApplication org.eclipse.ui.ide.workbench" />
   <arg line="-testpluginname my-bundled-plugin-with-tests" />
   <arg line="-testLoaderClass org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader" />
   <arg line="-loaderpluginname org.eclipse.jdt.junit4.runtime" />
   <arg line="-classnames TestAllMyCode" />
</java>

事实证明，在类路径上设置 build/my-bundled-jar-with-tests.jar 会使测试运行程序感到困惑，因此我必须创建一个仅包含 PDETestListener、PDETestPortLocator 和 PDETestResultsCollector 的类文件的新 jar（称为 pde-test 。罐）。我的固定路径是：

<path id="test.class.path">
   <pathelement location="build/pde-test.jar" /> <!-- fixed the problem -->
   <fileset dir="${test.eclipse.dir}/plugins">
      <include name="org.junit_4.*/**/junit.jar" />
      <include name="org.hamcrest.core_*.jar" />
      ... <!-- same as before -->

找到并运行了所有 29 个测试。