在Java 11中不适用于PowerMock测试的Jacoco脱机工具

Question

我无法使用Jacoco插件在Java 11中获得Powermock测试的代码覆盖率。我的版本详情如下：

Java version: jdk-11.0.2
Maven version: maven 3.5.2
Jacoco maven plugin version: 0.8.5
Powermock version: 2.0.0-beta.5

我还添加了jacoco运行时代理，就像我们应该在所有子项目的类路径中一样：

<dependencies>
    <!-- Added to provide jacocoagent in classpaths for offline instrumentation builds
         Refer https://www.jacoco.org/jacoco/trunk/doc/offline.html -->
    <dependency>
        <groupId>org.jacoco</groupId>
        <artifactId>org.jacoco.agent</artifactId>
        <classifier>runtime</classifier>
        <scope>test</scope>
        <version>${jacoco.plugin.version}</version>
    </dependency>
</dependencies>

这些是我的插件细节(请注意，这些设置在Java 8中运行得非常好)：

    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-surefire-plugin</artifactId>
      <configuration>
          <!-- Skips unit tests if the value of skipTests property is true -->
          <skipTests>${skipTests}</skipTests>
          <!-- Excludes integration tests when unit tests are run -->
          <excludes>
             <exclude>**/IT*.java</exclude>
          </excludes>
          <systemPropertyVariables>
             <jacoco-agent.destfile>${project.build.directory}/target/jacoco.exec</jacoco-agent.destfile>
          </systemPropertyVariables>
          </configuration>
    </plugin>
   <plugin>
     <groupId>org.jacoco</groupId>
     <artifactId>jacoco-maven-plugin</artifactId>
     <configuration>
       <append>true</append>
       <destFile>${user.dir}/target/jacoco.exec</destFile>
       <excludes>
         <exclude>*</exclude>
       </excludes>
       <dataFile>${user.dir}/target/jacoco.exec</dataFile>
       <outputDirectory>${user.dir}/target/coverage-reports/jacoco</outputDirectory>
       </configuration>
       <executions>
         <execution>
           <id>default-instrument</id>
           <goals>
              <goal>instrument</goal>
           </goals>
         </execution>
         <execution>
           <id>default-restore-instrumented-classes</id>
           <goals>
             <goal>restore-instrumented-classes</goal>
           </goals>
         </execution>
         <execution>
           <id>jacoco-site</id>
           <phase>package</phase>
           <goals>
             <goal>report</goal>
           </goals>
         </execution>
      </executions>
    </plugin>

结果：

[INFO] --- jacoco-maven-plugin:0.8.5:instrument (default-instrument) @ utils ---
[WARNING] The POM for org.codehaus.plexus:plexus-utils:jar:1.1 is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details
[INFO]


[INFO] --- jacoco-maven-plugin:0.8.5:restore-instrumented-classes (default-restore-instrumented-classes) @ utils ---
[INFO]


[INFO] --- jacoco-maven-plugin:0.8.5:report (jacoco-site) @ utils ---
[INFO] Skipping JaCoCo execution due to missing execution data file.

如您所见，在离线检测的情况下不会生成jacoco.exec文件。

请注意，当我不使用离线检测(即使用准备代理目标)时，我能够生成jacoco.exec文件，但是它忽略了PowerMock测试。

如本期所示：https://github.com/jacoco/jacoco/issues/663

在0.8.3版中提供了对Java 11的支持，但我不确定离线测试中是否有任何导致问题的更改。

如果我需要其他的话，请通知我。

Answer 1

将Power模仿版本更新为2.0.7解决了这个问题。我现在能够使用离线检测工具生成jacoco.exec文件。

Answer 2

除了脱机工具之外，还要确保将正确的版本设置为Java的-source和-target。这也会影响覆盖率报告，因为有时只有脱机设备设置才有助于获得电源模拟测试覆盖范围。

<properties>
        ....
       <maven.compiler.source>11</maven.compiler.source>
       <maven.compiler.target>11</maven.compiler.target>
        .....
</properties>   
..
..

<plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.8.1</version>
                    <configuration>
                  <source>${maven.compiler.source}</source>
                  <target>${maven.compiler.target}</target>
                    
            </plugin>