java - jacoco maven 插件不报告测试覆盖率

Question

我正在尝试将 jacoco 与 Maven 一起使用。当我运行 mvn clean test 时，我希望覆盖率输出写入 target/coverage-reports，但是当我在构建后打开 index.html 时，它是空的。

我检查了以下内容， - jacoco.exec 文件存在并且其中有一堆类名 - 在覆盖 html 中，有一个链接“Sessions”，当我点击它时，如果我的类似乎已被执行，我会看到一堆 - 运行 Maven 命令时没有看到任何错误或警告

我很困惑为什么报告是空的。从我看到的所有例子来看，这似乎应该可行。我错过了什么？

我正在为 Maven 插件使用以下 jacoco 配置

  <plugin>
    <groupId>org.jacoco</groupId>
    <artifactId>jacoco-maven-plugin</artifactId>
    <configuration>
      <append>true</append>
      <skip>false</skip>
      <excludes/>
      <outputDirectory>${project.build.directory}/coverage-reports/</outputDirectory>
      <dataFile>${project.build.directory}/jacoco.exec</dataFile>
      <includes>
        <include>mypackage.*</include>
      </includes>
      <check>false</check>
    </configuration>
    <executions>
      <execution>
        <id>pre-test</id>
        <goals>
          <goal>prepare-agent</goal>
        </goals>
      </execution>
      <execution>
        <id>post-test</id>
        <goals>
          <goal>report</goal>
        </goals>
        <phase>test</phase>
      </execution>
    </executions>
  </plugin>

更新

显然这与我提供的包含模式有关。当我删除包含内容时，它确实显示了覆盖范围，但超出了我的需要。我仍在尝试找出用于执行正确包含的模式。

Answer 1

你还需要将它挂接到surefire，将其更改为

 <build>
        <plugins>
          <plugin>
            <groupId>org.jacoco</groupId>
            <artifactId>jacoco-maven-plugin</artifactId>
            <version>0.6.3.201306030806</version>
            <executions>
              <!-- pre-unit-test execution helps setting up some maven property,
                which will be used later by JaCoCo -->
              <execution>
                <id>pre-unit-test</id>
                <goals>
                  <goal>prepare-agent</goal>
                </goals>
                <configuration>
                  <destFile>${project.build.directory}/coverage-reports/jacoco-ut.exec</destFile>
                  <!-- passing property which will contains settings for JaCoCo agent.
                    If not specified, then "argLine" would be used for "jar" packaging -->
                  <propertyName>surefireArgLine</propertyName>
                </configuration>
              </execution>
              <!-- report phase setup -->
              <execution>
                <id>post-unit-test</id>
                <phase>test</phase>
                <goals>
                  <goal>report</goal>
                </goals>
                <configuration>
                  <!-- output file with report data. -->
                  <dataFile>${project.build.directory}/coverage-reports/jacoco-ut.exec</dataFile>
                  <!-- output directory for the reports. -->
                  <outputDirectory>${project.reporting.outputDirectory}/jacoco-ut</outputDirectory>
                </configuration>
              </execution>
            </executions>
          </plugin>

          <plugin>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.14</version>
            <executions>
              <execution>
                <id>default-test</id>
                <phase>test</phase>
                <goals>
                  <goal>test</goal>
                </goals>
                <configuration>
                  <argLine>${surefireArgLine}</argLine>
                </configuration>
              </execution>
            </executions>
            <configuration>
              <argLine>-XX:MaxPermSize=512m</argLine>
            </configuration>
          </plugin>
        </plugins>
  </build>