gwt-test-utils无法使用Ant运行测试

Question

我创建了一个示例项目，使用gwt-test-utils (https://github.com/povilasb/gwt-test-utils-sample)运行gwt测试。我使用Ant(1.8.2)进行构建，包:gwt 2.6, juni 4.11和gwt-test-utils 0.47。

不幸的是，我无法运行测试:

html-test-utils-config:
test:

     [junit] Testsuite: com.example.gwtTestUtils.client.PersonTest
        [junit] Tests run: 1, Failures: 0, Errors: 1, Time elapsed: 0.006 sec
        [junit] 
        [junit] ------------- Standard Error -----------------
        [junit] SLF4J: Failed to load class org.slf4j.impl.StaticLoggerBinder.
        [junit] SLF4J: Defaulting to no-operation (NOP) logger implementation
        [junit] ------------- ---------------- ---------------
        [junit] Testcase: initializationError(com.example.gwtTestUtils.client.PersonTest):  Caused an ERROR
        [junit] Error while scanning package 'com.googlecode.gwt.test.internal.patchers'
        [junit] com.googlecode.gwt.test.exceptions.GwtTestPatchException: Error while scanning package 'com.googlecode.gwt.test.internal.patchers'
        [junit]     at com.googlecode.gwt.test.internal.ClassesScanner.scanPackages(ClassesScanner.java:68)
        [junit]     at com.googlecode.gwt.test.internal.ConfigurationLoader.visitPatchClasses(ConfigurationLoader.java:291)
        [junit]     at com.googlecode.gwt.test.internal.ConfigurationLoader.<init>(ConfigurationLoader.java:65)
        [junit]     at com.googlecode.gwt.test.internal.GwtFactory.<init>(GwtFactory.java:91)
        [junit]     at com.googlecode.gwt.test.internal.GwtFactory.initializeIfNeeded(GwtFactory.java:46)
        [junit]     at com.googlecode.gwt.test.internal.junit.AbstractGwtRunner.<init>(AbstractGwtRunner.java:30)
        [junit]     at com.googlecode.gwt.test.GwtRunner.<init>(GwtRunner.java:19)
        [junit]     at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
        [junit]     at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
        [junit] Caused by: com.googlecode.gwt.test.exceptions.GwtTestPatchException: Cannot find class in the classpath : 'com.googlecode.gwt.test.internal.patchers.AbstractHasDataPatcher'
        [junit]     at com.googlecode.gwt.test.internal.GwtClassPool.getClass(GwtClassPool.java:27)
        [junit]     at com.googlecode.gwt.test.internal.ClassesScanner.visitClass(ClassesScanner.java:107)
        [junit]     at com.googlecode.gwt.test.internal.ClassesScanner.scanClassesFromJarFile(ClassesScanner.java:99)
        [junit]     at com.googlecode.gwt.test.internal.ClassesScanner.scanPackages(ClassesScanner.java:62)
        [junit] 
        [junit] 
        [junit] Test com.example.gwtTestUtils.client.PersonTest FAILED
BUILD SUCCESSFUL           
Total time: 1 second 

似乎有人之前已经遇到过这个问题:https://code.google.com/p/gwt-test-utils/issues/detail?id=168。在那里找不到解决办法。

有人使用gwt 2.6和gwt-test-utils 4.7和ant吗?

Answer 1

我设法解决了我的问题。我消除了错误

扫描'com. googlcode .gwt.test.internal.patchers'包时出错

在Ant junit中使用fork模式:

<junit haltonfailure="false" includeantruntime="false"
    fork="yes" forkmode="once" >

这是运行junit测试的推荐方法:

一般来说，推荐创建一个新的VM，因为它将您的测试从Ant的环境(在类加载器上包含许多库，特别是与XML相关的类)中隔离出来，但是由于启动新的Java VM相关的巨大开销，它变得非常慢。

在此之后，我又出现了一个错误:

test:
    [junit] WARNING: multiple versions of ant detected in path for junit
    [junit]          jar:file:/usr/share/ant/lib/ant.jar!/org/apache/tools/ant/Project.class
    [junit]      and jar:file:/home/povilas/projects/gwt-test-utils-sample/lib/ant-1.8.2.jar!/org/apache/tools/ant/Project.class
    [junit] Testsuite: com.example.gwtTestUtils.client.PersonTest
    [junit] Tests run: 1, Failures: 0, Errors: 1, Time elapsed: 0.005 sec
    [junit]
    [junit] ------------- Standard Error -----------------
    [junit] SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
    [junit] SLF4J: Defaulting to no-operation (NOP) logger implementation
    [junit] SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
    [junit] ------------- ---------------- ---------------
    [junit] Testcase: initializationError(com.example.gwtTestUtils.client.PersonTest):  Caused an ERROR
    [junit] Error while generating gwt-test-utils prerequisites
    [junit] com.googlecode.gwt.test.exceptions.GwtTestException: Error while generating gwt-test-utils prerequisites
    [junit]     at com.googlecode.gwt.test.internal.GwtFactory.<init>(GwtFactory.java:119)
    [junit]     at com.googlecode.gwt.test.internal.GwtFactory.initializeIfNeeded(GwtFactory.java:46)
    [junit]     at com.googlecode.gwt.test.internal.junit.AbstractGwtRunner.<init>(AbstractGwtRunner.java:30)
    [junit]     at com.googlecode.gwt.test.GwtRunner.<init>(GwtRunner.java:19)
    [junit]     at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
    [junit]     at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
    [junit] Caused by: com.google.gwt.core.ext.UnableToCompleteException: (see previous log entries)
    [junit]     at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:315)
    [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.googlecode.gwt.test.internal.GwtFactory.createModuleDef(GwtFactory.java:164)
    [junit]     at com.googlecode.gwt.test.internal.GwtFactory.<init>(GwtFactory.java:110)
    [junit]
    [junit]
    [junit] Test com.example.gwtTestUtils.client.PersonTest FAILED
BUILD SUCCESSFUL
Total time: 1 second

我通过将源代码目录添加到junit类路径来解决这个错误:

<property name="src.dir" value="src" />
...
<junit haltonfailure="false" includeantruntime="false"
    fork="yes" forkmode="once" >
    ...
    <classpath>
        <path refid="project.class.path" />
        <pathelement location="${test.build.dir}" />
        <pathelement location="${src.dir}" />
    </classpath>
    ...
</junit>

我猜gwt-test-utils需要gwt模块的源代码。你可以在github上找到完整的工作示例项目