如何才能阻止maven两次运行TEST？

Question

我有一个大项目，大约有5000个测试用例。当运行mvn clean install时，它将运行test goal两次(一次作为安装的一部分，第二次作为surefire插件的一部分)。

为什么需要第二次运行test？有没有办法强制surefire使用test goal结果而不是重新调用它自己的结果？

这是我的surefire插件配置：

 <plugin>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.18.1</version>
    <executions>
       <execution>
         <id>default-test</id>
         <phase>test</phase>
         <goals>
             <goal>test</goal>
         </goals>
         <configuration>
            <parallel>classes</parallel>
            <threadCount>3</threadCount>
         </configuration>
      </execution>
   </executions>
</plugin>

有没有办法调整插件以更好地处理机器资源？

下面是执行的完整的默认maven配置文件：

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>2.0.2</version>
            <configuration>
                <archive>
                    <manifest>
                        <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                    </manifest>
                    <manifestEntries>
                        <Build-Number>${build.number}</Build-Number>
                        <Job-Name>${job.name}</Job-Name>
                        <Build-Url>${build.url}</Build-Url>
                        <Git-Commit>${git.commit}</Git-Commit>
                        <Git-Branch>${git.branch}</Git-Branch>
                        <Timestamp>${maven.build.timestamp}</Timestamp>
                        <StyleGuide-Version>${styleguide.version}</StyleGuide-Version>
                    </manifestEntries>
                </archive>
                <warName>pss</warName>
            </configuration>
        </plugin>
        <plugin>
            <groupId>com.cj.jshintmojo</groupId>
            <artifactId>jshint-maven-plugin</artifactId>
            <version>1.3.0</version>
            <executions>
                <execution>
                    <goals>
                        <goal>lint</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <options>maxparams:5,camelcase,eqeqeq,forin,immed,latedef,noarg,noempty,nonew,expr</options>
                <directories>
                    <directory>src/main/webapp/js/page</directory>
                </directories>
                <excludes>
                    <exclude>src/main/webapp/js/page/marketingPreferences.js</exclude>
                    <exclude>src/main/webapp/js/page/changeCarParkingDetails.js</exclude>
                    <exclude>src/main/webapp/js/page/angularjs-app.js</exclude>
                    <exclude>src/main/webapp/js/page/content-cover.js</exclude>
                    <exclude>src/main/webapp/js/page/amendmentConfirm.js</exclude>
                </excludes>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.lesscss</groupId>
            <artifactId>lesscss-maven-plugin</artifactId>
            <version>1.3.3</version>
            <executions>
                <execution>
                    <id>bingleless</id>
                    <configuration>
                        <sourceDirectory>${project.basedir}/src/main/webapp/app-resources/</sourceDirectory>
                        <outputDirectory>${project.basedir}/src/main/webapp/app-resources/</outputDirectory>
                        <includes>
                            <include>**\/policy-self-service\/**\/*pss-sg.less</include>
                        </includes>
                        <compress>true</compress>
                    </configuration>
                    <goals>
                        <goal>compile</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
        <plugin>
            <groupId>net.alchim31.maven</groupId>
            <artifactId>yuicompressor-maven-plugin</artifactId>
            <version>1.1</version>
            <executions>
                <execution>
                    <goals>
                        <goal>compress</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <excludes>
                    <exclude>**/*.min.js</exclude>
                    <exclude>**/*.min.css</exclude>
                    <exclude>**/style-guide/**</exclude>
                    <exclude>**/generated/**</exclude>
                    <exclude>**/app-resources/common/**</exclude>
                    <exclude>**/app-resources/bower_components/**</exclude>
                    <exclude>**/app-resources/policy-self-service/**</exclude>
                </excludes>
                <nosuffix>true</nosuffix>
                <jswarn>false</jswarn>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-checkstyle-plugin</artifactId>
            <configuration>
                <logViolationsToConsole>true</logViolationsToConsole>
            </configuration>
        </plugin>
        <plugin>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>${maven-surefire-plugin.version}</version>
            <configuration>
                <parallel>classes</parallel>
                <threadCount>3</threadCount>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-report-plugin</artifactId>
            <version>${maven-surefire-report-plugin.version}</version>
            <executions>
                <execution>
                    <phase>install</phase>
                    <goals>
                        <goal>report-only</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

Answer 1

我认为pom.xml中的<execution>会导致第二次测试运行。除了测试阶段的默认目标之外，Maven还将其视为要执行的另一个目标。

由于maven-surefire-plugin是Maven中默认用于测试阶段的插件，因此您只需在<execution>外部提供<configuration>部件。如下所示修改您的pom.xml

<plugins>
  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.18.1</version>
    <configuration>
        <parallel>classes</parallel>
        <threadCount>3</threadCount>
    </configuration>
  </plugin>
</plugins>

Answer 2

如果在你的pom中同时有cobertura和surefire插件，测试将会执行两次。为了避免在cobertura插件中将添加执行阶段设置为none，如下所述：

<plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>cobertura-maven-plugin</artifactId>
            <executions>
                <execution>
                    <phase>none</phase>
                </execution>
            </executions>
</plugin>