Maven多模块项目与单独的测试模块-代码覆盖率？

Question

我有一个maven多模块项目。

root:
    moduleA/   # no unit tests
    moduleB/   # no unit tests
    moduleC/   # no unit tests
    tests/     # All unit tests, since depends on modules A, B and C

所有测试都在称为tests/的单个模块中，所有代码都在单独的模块中。

有没有办法让我得到代码覆盖率？

Answer 1

自Jacoco版本：0.7以来。7、您可以使用报告聚合。

根聚甲醛。xml:

<project>
[...]
  <build>
    <plugins>
     <!--   refer：https://prismoskills.appspot.com/lessons/Maven/Chapter_06_-_Jacoco_report_aggregation.jsp     -->
    <plugin>
    <groupId>org.jacoco</groupId>
    <artifactId>jacoco-maven-plugin</artifactId>
    <version>0.8.6</version>
    <executions>
        <execution>
            <id>prepare-agent</id>
            <goals>
                <goal>prepare-agent</goal>
            </goals>
        </execution>

        <execution>
            <id>report</id>
            <phase>test</phase>
            <goals>
                <goal>report</goal>
                <goal>report-aggregate</goal>
            </goals>
        </execution>
    </executions>
    </plugin>
    <plugins>
  </build>
[...]
<pluginManagement>
  <plugins>
    <!--    unit test plugin        -->
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-surefire-plugin</artifactId>
      <version>3.0.0-M5</version>
      <dependencies>
        <dependency>
          <groupId>org.apache.maven.surefire</groupId>
          <artifactId>surefire-junit47</artifactId>
          <version>3.0.0-M5</version>
        </dependency>
      </dependencies>
      <configuration>
        <argLine>${argLine} -Dfile.encoding=UTF-8</argLine>
      </configuration>
    </plugin>
  </plugins>
</pluginManagement>
[...]
</project>

子模块pom.xml：

<project>
[...]
<plugins>
    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-surefire-plugin</artifactId>
        <configuration>
            <includes>
                <include>[path]</include>
            </includes>
        </configuration>
    </plugin>
</plugins>
[...]
</project>

如果你使用Jenkin，你可以使用jacoco插件和

Answer 2

我不认为jacoco或cobertura能够报告跨模块的代码覆盖率。在运行测试覆盖率报告之前，您可能希望尝试检测已编译的类，而不是依赖于动态检测。

请参见此jacocomaven目标以执行离线检测。

Answer 3

有一种方法可以做到这一点。魔术是创造一个组合的jacoco。exec文件，分两步执行。我的pom：

<properties>
    ...
    <jacoco.overall.exec>${maven.multiModuleProjectDirectory}/target/jacoco_analysis/jacoco.exec</jacoco.overall.exec>
</properties>

<build>
    <pluginManagement>
        <plugins>

            ...

            <plugin>
                <groupId>org.jacoco</groupId>
                <artifactId>jacoco-maven-plugin</artifactId>
                <version>0.7.8</version>
                <configuration>
                    <destFile>${jacoco.overall.exec}</destFile>
                    <dataFile>${jacoco.overall.exec}</dataFile>
                </configuration>
            </plugin>

            ...

        </plugins>
    </pluginManagement>
</build>

<profiles>
    <profile>
        <id>runTestWithJacoco</id>
        <activation>
            <property>
                <name>runTestWithJacoco</name>
                <value>true</value>
            </property>
        </activation>
        <build>
            <plugins>
                <plugin>
                    <groupId>org.jacoco</groupId>
                    <artifactId>jacoco-maven-plugin</artifactId>
                    <executions>
                        <execution>
                            <id>default-prepare-agent</id>
                            <goals>
                                <goal>prepare-agent</goal>
                            </goals>
                            <configuration>
                                <append>true</append>
                            </configuration>
                        </execution>
                    </executions>
                </plugin>
            </plugins>
        </build>
    </profile>
    <profile>
        <id>createJacocoReport</id>
        <activation>
            <property>
                <name>createJacocoReport</name>
                <value>true</value>
            </property>
        </activation>
        <build>
            <plugins>
                <plugin>
                    <groupId>org.jacoco</groupId>
                    <artifactId>jacoco-maven-plugin</artifactId>
                    <executions>
                        <execution>
                            <id>default-report</id>
                            <phase>validate</phase>
                            <goals>
                                <goal>report</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
            </plugins>
        </build>
    </profile>
</profiles>

将其添加到父pom中，然后执行mvn clean install-DrunTestWithJacoco和mvn validate-DcreateJacoReport。现在您已经完全覆盖了一个类，而不管哪个测试覆盖了它。神奇的是使用maven。多模式项目目录创建一个组合的jacoco。exec文件。此属性自maven 3.3起可用。1并指向开始maven构建的文件夹。