使用jacoco运行时gwt-test-utils单元失败

Question

我们正在尝试从使用gwt-test-utils编写的一组单元测试中为我们的GWT应用程序生成覆盖率报告.该项目是一个多模块的maven项目.我们在jenkins上使用sonar-plugin来生成和整理我们的覆盖范围和违规信息.

当构建作业运行时,所有GWT单元测试都作为正常构建的一部分传递,但是当Sonar插件尝试重新运行测试时,它们都会因以下错误而失败:

initializationError(uk.co.card.gwt.retailpost.client.dialog.productmodify.CurrencyEditDialogTest)经过的时间:0秒<<<错误!com.googlecode.gwt.test.exceptions.GwtTestException:在com.googlecode.gwt.internal.GwtFactory.(GwtFactory.java:113)的com.googlecode.gwt.test生成gwt-test-utils先决条件时出错. internal.GwtFactory.initializeIfNeeded(GwtFactory.java:45)at com.googlecode.gwt.test.internal.junit.AbstractGwtRunner.(AbstractGwtRunner.java:30)at com.googlecode.gwt.test.GwtRunner.(GwtRunner.java: 19)at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)at java.lang.reflect .Constructor.newInstance(Constructor.java:513)在org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:29)在org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:21)在org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:5 9)在org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)在org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)在org.junit.internal.requests.ClassRequest .getRunner(ClassRequest.java:26)在org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:250)在org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141 )在org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)在sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法)在sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)在sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)在java.lang.reflect.Method.invoke(Method.java:597)在org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java: 189)at org.apache.maven.surefire.booter.ProviderFactory $ ProviderProxy.invoke(提供 rFactory.java:165)在org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)在org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)在组织.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)引起:com.google.gwt.core.ext.UnableToCompleteException :(参见以前的日志条目)com.google.gwt.dev.cfg com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:363)中的.ModuleDef.checkForSeedTypes(ModuleDef.java:559),位于com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java) :354)com.googlecode.gwt.test.internal.GwtFactory.createCompilationState(GwtFactory.java:151)at com.googlecode.gwt.test.internal.GwtFactory.(GwtFactory.java:106)... 25更多

查看jenkins和工作区目录的其余控制台输出,我找不到"com.google.gwt.core.ext.UnableToCompleteException :(参见前面的日志条目)"引用的日志文件.

有没有人遇到类似的问题,并且知道如何让Sonar成功运行gwt-test-utils,或者至少知道何时查找异常中提到的先前日志条目.

编辑:经过进一步的实验,问题似乎是由jacoco引起的.试图只运行jacoco装备的单元测试(并且没有声纳参与)会导致同样的错误

---

**编辑:

来自pom.xml的示例

    <build>
pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.jacoco</groupId>
                    <artifactId>jacoco-maven-plugin</artifactId>
                    <version>0.6.2.201302030002</version>
                </plugin>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-surefire-plugin</artifactId>
                    <version>2.12.4</version>
                    <configuration>                        
                        <excludedGroups combine.self="override" />
                        <reuseForks>true</reuseForks>
                        <argLine>-Xmx1024m -XX:MaxPermSize=256m ${jacoco.agent.argLine}</argLine>
                    </configuration>
                </plugin>
</plugins>
        </pluginManagement>
        <plugins>            
            <plugin>
                <groupId>org.jacoco</groupId>
                <artifactId>jacoco-maven-plugin</artifactId>
                <configuration>
                    <propertyName>jacoco.agent.argLine</propertyName>
                    <destFile>${sonar.jacoco.itReportPath}</destFile>
                    <append>true</append>
                    <excludes>
                        <exclude>*.osgi.*</exclude>
                        <exclude>*.apache.*</exclude>
                        <exclude>*.sourceforge.*</exclude>
                        <exclude>*.junit.*</exclude>
                        <!-- Test support code does not need to be covered -->
                        <exclude>uk.co.card.retailpost.clientintegration.utilities.*</exclude>
                    </excludes>
                    <classDumpDir>temp/classes</classDumpDir>
                </configuration>
                <executions>
                    <execution>
                        <id>agent</id>
                        <goals>
                            <goal>prepare-agent</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>report</id>
                        <goals>
                            <goal>report</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>   
        </plugins>
    </build>

Answer 1

正如我在评论中提到的，使用 maven-surefire-plugin 的 jacoco 库以不同的顺序加载。要解决此问题，请编写自己的运行程序（扩展 com.googlecode.gwt.test.GwtRunner）并更改线程 contextClassLoader 的类加载器。

import com.googlecode.gwt.test.GwtRunner;

    public class MyGwtRunner extends GwtRunner {

        static {
            URLClassLoader classLoader = (URLClassLoader) MyGwtRunner.class.getClassLoader();

            try {
                URL[] urls = getClassPath();
                ClassLoader cl = URLClassLoader.newInstance(urls, classLoader);
                Thread.currentThread().setContextClassLoader(cl);
            } catch (MalformedURLException e) {
                throw new IllegalStateException(e);
            }

        }

        public MyGwtRunner(Class<?> clazz) throws Throwable {
            super(clazz);
        }

        private static URL[] getClassPath() throws MalformedURLException {
            String classPath = System.getProperty("java.class.path");
            String pathSeparator = System.getProperty("path.separator");
            String[] array = classPath.split(pathSeparator);

            List<URL> files = new ArrayList<URL>();
            for (String a : array) {
                files.add(new File(a).toURI().toURL());
            }
            return files.toArray(new URL[files.size()]);
        }

    }

在您的测试中，通过 MyGwtRunner 覆盖 GwtRunner

@GwtModule("com.my.module.GwtTestUtils")
@RunWith(MyGwtRunner.class)
public abstract class AbstractGwtJunit extends GwtTest { 
....
}