java - 无法使用 ant 运行 GWTTestCase 测试

Question

我根本无法成功运行 GWTTestCase 测试。我正在使用 GWT 2.6.1、JUnit 4.11、ant 1.8.2。我创建了示例 repository on github .

Ant 目标运行测试(也许这里很明显):

<target name="test.gwt" depends="javac.test"
    description="Run GWTTestCase tests." >
    <junit haltonfailure="false" includeantruntime="false">
        <sysproperty key="gwt.args" value="-prod -runStyle
            HtmlUnit" />
        <sysproperty key="gwt.persistentunitcachedir"
            value="${gwt.cache.dir}" />

        <classpath>
            <pathelement location="${src.dir}" />
            <pathelement location="${test.build.dir}" />
            <path refid="project.class.path" />
        </classpath>
        <formatter type="brief" usefile="false" />

        <test name="com.example.client.TestPerson" />
    </junit>
</target>

我使用 ant test.gwt 运行测试，得到的输出是:

test.gwt:
    [junit] Testsuite: com.example.client.TestPerson
    [junit] Tests run: 1, Failures: 0, Errors: 1, Time elapsed: 0.848 sec
    [junit]
    [junit] ------------- Standard Output ---------------
    [junit] Loading inherited module 'com.example.Main'
    [junit]    [ERROR] Unexpected error while processing XML
    [junit] java.lang.ClassCastException: org.apache.xerces.parsers.XIncludeAwareParserConfiguration cannot be cast to org.apache.xerces.xni.parser.XMLParserConfiguration
    [junit]     at org.apache.xerces.parsers.SAXParser.<init>(Unknown Source)
    [junit]     at org.apache.xerces.parsers.SAXParser.<init>(Unknown Source)
    [junit]     at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.<init>(Unknown Source)
    [junit]     at org.apache.xerces.jaxp.SAXParserImpl.<init>(Unknown Source)
    [junit]     at org.apache.xerces.jaxp.SAXParserFactoryImpl.newSAXParser(Unknown Source)
    [junit]     at com.google.gwt.dev.util.xml.ReflectiveParser.createNewSaxParser(ReflectiveParser.java:65)
    [junit]     at com.google.gwt.dev.util.xml.ReflectiveParser.access$000(ReflectiveParser.java:46)
    [junit]     at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse(ReflectiveParser.java:343)
    [junit]     at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$200(ReflectiveParser.java:68)
    [junit]     at com.google.gwt.dev.util.xml.ReflectiveParser.parse(ReflectiveParser.java:418)
    [junit]     at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:333)
    [junit]     at com.google.gwt.dev.cfg.ModuleDefLoader$1.load(ModuleDefLoader.java:100)
    [junit]     at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule(ModuleDefLoader.java:197)
    [junit]     at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule(ModuleDefLoader.java:176)
    [junit]     at com.google.gwt.dev.cfg.ModuleDefLoader.createSyntheticModule(ModuleDefLoader.java:105)
    [junit]     at com.google.gwt.junit.CompileStrategy.maybeCompileModuleImpl2(CompileStrategy.java:165)
    [junit]     at com.google.gwt.junit.CompileStrategy.maybeCompileModuleImpl(CompileStrategy.java:112)
    [junit]     at com.google.gwt.junit.SimpleCompileStrategy.maybeCompileModule(SimpleCompileStrategy.java:36)
    [junit]     at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1342)
    [junit]     at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1311)
    [junit]     at com.google.gwt.junit.JUnitShell.runTest(JUnitShell.java:705)
    [junit]     at com.google.gwt.junit.client.GWTTestCase.runTest(GWTTestCase.java:421)
    [junit]     at junit.framework.TestCase.runBare(TestCase.java:130)
    [junit]     at junit.framework.TestResult$1.protect(TestResult.java:106)
    [junit]     at junit.framework.TestResult.runProtected(TestResult.java:124)
    [junit]     at junit.framework.TestResult.run(TestResult.java:109)
    [junit]     at junit.framework.TestCase.run(TestCase.java:120)
    [junit]     at com.google.gwt.junit.client.GWTTestCase.run(GWTTestCase.java:247)
    [junit]     at junit.framework.TestSuite.runTest(TestSuite.java:230)
    [junit]     at junit.framework.TestSuite.run(TestSuite.java:225)
    [junit]     at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:518)
    [junit]     at org.apache.tools.ant.taskdefs.optional.junit.JUnitTask.executeInVM(JUnitTask.java:1420)
    [junit]     at org.apache.tools.ant.taskdefs.optional.junit.JUnitTask.execute(JUnitTask.java:848)
    [junit]     at org.apache.tools.ant.taskdefs.optional.junit.JUnitTask.executeOrQueue(JUnitTask.java:1899)
    [junit]     at org.apache.tools.ant.taskdefs.optional.junit.JUnitTask.execute(JUnitTask.java:800)
    [junit]     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
    [junit]     at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
    [junit]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    [junit]     at java.lang.reflect.Method.invoke(Method.java:616)
    [junit]     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
    [junit]     at org.apache.tools.ant.Task.perform(Task.java:348)
    [junit]     at org.apache.tools.ant.Target.execute(Target.java:390)
    [junit]     at org.apache.tools.ant.Target.performTasks(Target.java:411)
    [junit]     at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
    [junit]     at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
    [junit]     at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
    [junit]     at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
    [junit]     at org.apache.tools.ant.Main.runBuild(Main.java:809)
    [junit]     at org.apache.tools.ant.Main.startAnt(Main.java:217)
    [junit]     at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
    [junit]     at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
    [junit] ------------- ---------------- ---------------
    [junit] Testcase: testCreate(com.example.client.TestPerson):    Caused an ERROR
    [junit] (see previous log entries)
    [junit] com.google.gwt.core.ext.UnableToCompleteException: (see previous log entries)
    [junit]     at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:336)
    [junit]     at com.google.gwt.dev.cfg.ModuleDefLoader$1.load(ModuleDefLoader.java:100)
    [junit]     at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule(ModuleDefLoader.java:197)
    [junit]     at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule(ModuleDefLoader.java:176)
    [junit]     at com.google.gwt.dev.cfg.ModuleDefLoader.createSyntheticModule(ModuleDefLoader.java:105)
    [junit]     at com.google.gwt.junit.CompileStrategy.maybeCompileModuleImpl2(CompileStrategy.java:165)
    [junit]     at com.google.gwt.junit.CompileStrategy.maybeCompileModuleImpl(CompileStrategy.java:112)
    [junit]     at com.google.gwt.junit.SimpleCompileStrategy.maybeCompileModule(SimpleCompileStrategy.java:36)
    [junit]     at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1342)
    [junit]     at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1311)
    [junit]     at com.google.gwt.junit.JUnitShell.runTest(JUnitShell.java:705)
    [junit]     at com.google.gwt.junit.client.GWTTestCase.runTest(GWTTestCase.java:421)
    [junit]     at com.google.gwt.junit.client.GWTTestCase.run(GWTTestCase.java:247)
    [junit]
    [junit]
    [junit] Test com.example.client.TestPerson FAILED

BUILD SUCCESSFUL
Total time: 1 second

你知道我可能做错了什么吗？我也尝试过 JUnit 3.8 - 没有帮助。可能缺少 .*jar 文件或版本不正确？

Answer 1

好的，我成功地使用 Ant 运行了 GWTTestCase 测试。示例项目位于 github .

首先我切换到junit任务 fork 模式。其中，如documentation说，

In general, forking a new VM is recommended since it isolates your test from Ant's environment (which contains a lot of libraries on the classloader, in particular XML related classes) but it becomes really slow because of the big overhead associated with starting new Java VMs.

然后，当我添加 validation-api 包 (ivy.xml):

<dependency org="javax.validation" name="validation-api" rev="1.0.0.GA" />

然后很明显，我的测试缺少 GWT 模块。所以我创建了一个(./test/com/example/MainTests.xml.gwt):

<module rename-to="MainTests" >
    <inherits name="com.example.Main" />
    <source path="client" />
</module>

最终我必须将测试模块路径添加到测试类路径(build.xml):

<property name="test.src.dir" value="test" />
...
<junit haltonfailure="false" includeantruntime="false"
    fork="true" forkmode="once" >

    <classpath>
        ...
        <pathelement location="${test.src.dir}" />
        ...
    </classpath>
</junit>