JUnit + Maven +并行测试执行错误

Question

使用JUnit,Groovy,Spock和Maven时,我遇到了并行执行JUnit测试的问题.执行它们时,我在测试成功通过后得到以下内容:

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 18.362s
[INFO] Finished at: Wed Mar 20 15:14:25 CET 2013
[INFO] Final Memory: 16M/221M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.14:test (default-test) on project spock-webdriver: ExecutionException; nested exception is java.util.concurrent.ExecutionException: java.lang.RuntimeException: There was an error in the forked process
[ERROR] java.lang.NoSuchMethodError: org.apache.maven.surefire.common.junit4.JUnit4RunListener.rethrowAnyTestMechanismFailures(Lorg/junit/runner/Result;)V
[ERROR] at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:129)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[ERROR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[ERROR] at java.lang.reflect.Method.invoke(Method.java:601)
[ERROR] at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray2(ReflectionUtils.java:208)
[ERROR] at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:158)
[ERROR] at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:86)
[ERROR] at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
[ERROR] at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:95)
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

当我在pom.xml中强制使用Junit 47 Provider时,我明白了:

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.271s
[INFO] Finished at: Wed Mar 20 15:31:42 CET 2013
[INFO] Final Memory: 17M/178M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.14:test (default-test) on project spock-webdriver: ExecutionException; nested exception is java.util.concurrent.ExecutionException: java.lang.RuntimeException: There was an error in the forked process
[ERROR] java.lang.NoSuchMethodError: org.apache.maven.surefire.util.TestsToRun.size()I
[ERROR] at org.apache.maven.surefire.junitcore.JUnitCoreProvider.invoke(JUnitCoreProvider.java:123)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[ERROR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[ERROR] at java.lang.reflect.Method.invoke(Method.java:601)
[ERROR] at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray2(ReflectionUtils.java:208)
[ERROR] at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:158)
[ERROR] at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:86)
[ERROR] at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
[ERROR] at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:95)
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

pom.xml看起来像这样

<dependencies>
        <dependency>
            <groupId>org.seleniumhq.selenium</groupId>
            <artifactId>selenium-java</artifactId>
            <version>2.31.0</version>
            <scope>compile</scope>
        </dependency>

        <!--If this is commented out parallel testing is not working!!! When in testexecution itself is not working  -->
        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.14</version>
        </dependency>

        <dependency>
            <groupId>org.spockframework</groupId>
            <artifactId>spock-maven</artifactId>
            <version>0.7-groovy-2.0</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.codehaus.gmaven</groupId>
                <artifactId>gmaven-plugin</artifactId>
                <version>1.3</version>
                <configuration>
                    <providerSelection>1.7</providerSelection>
                    <source/>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>testCompile</goal>
                        </goals>
                    </execution>
                </executions>
                <dependencies>
                    <dependency>
                        <groupId>org.codehaus.gmaven.runtime</groupId>
                        <artifactId>gmaven-runtime-1.7</artifactId>
                        <version>1.3</version>
                        <exclusions>
                            <exclusion>
                                <groupId>org.codehaus.groovy</groupId>
                                <artifactId>groovy-all</artifactId>
                            </exclusion>
                        </exclusions>
                    </dependency>
                    <dependency>
                        <groupId>org.codehaus.groovy</groupId>
                        <artifactId>groovy-all</artifactId>
                        <version>2.0.6</version>
                    </dependency>
                </dependencies>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.14</version>
                <dependencies>
                </dependencies>
                <configuration>
                    <includes>
                        <include>**/*Test.java</include>
                    </includes>
                    <!-- Surefire 2.14+ configuration for parallelization -->
                    <forkCount>5</forkCount>
                    <reuseForks>false</reuseForks>
                </configuration>
            </plugin>
        </plugins>
    </build>

Answer 1

这是一个旧线程,但对于可能遇到此问题的其他人...此错误是由于与surefire插件依赖项和spock 0.7.0依赖项不一致引起的.Spock使用surefire-junit47,版本2.11.这个类/方法,JUnit4RunListener.rethrowAnyTestMechanismFailures在那个万无一失的版本中不存在.解决方案是从spock依赖项定义中排除surefire版本,如下所示:

<dependency>
    <groupId>org.spockframework</groupId>
    <artifactId>spock-maven</artifactId>
    <version>0.7-groovy-2.0</version>
    <exclusions>
        <exclusion>  <!-- exclude so we can pick up surefire-junit4 2.17 version for failsafe integration tests  -->
            <groupId>org.apache.maven.surefire</groupId>
            <artifactId>surefire-junit47</artifactId>
        </exclusion>
    </exclusions>
</dependency>

现在,它将使用您已定义的万无一失的版本,为了完整性,这里是我使用的万无一失的依赖:

<dependency>
    <groupId>org.apache.maven.surefire</groupId>
    <artifactId>surefire-junit4</artifactId>
    <version>2.17</version>
</dependency>

然后是surefire插件定义,允许单独和集成测试单独触发(这部分更多的是关于获得单元测试,集成测试,spock,maven和groovy玩得很好).

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.17</version>
    <dependencies>
        <dependency>
            <groupId>org.apache.maven.surefire</groupId>
            <artifactId>surefire-junit4</artifactId>
            <version>2.17</version>
        </dependency>
    </dependencies>
    <configuration>
        <forkCount>0</forkCount>
        <includes>
            <include>%regex[.*Test.*]</include>
        </includes>
        <excludes>
            <exclude>%regex[.*IntegrationTest.*]</exclude>
        </excludes>
    </configuration>
</plugin>

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-failsafe-plugin</artifactId>
    <version>2.17</version>
    <configuration>
        <includes>
            <include>%regex[.*IntegrationTest.*]</include>
        </includes>
    </configuration>
    <executions>
        <execution>
            <id>failsafe-integration-tests</id>
            <goals>
                <goal>integration-test</goal>
            </goals>
        </execution>
    </executions>
</plugin>

现在,单元测试将触发测试目标,集成测试可以按需独立启动,如下所示:mvn failsafe:integration-test

Answer 2

尝试使用2.9以上版本

<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.9</version>