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Maven Jacoco 插件不生成报告

[英]Maven Jacoco plugin not generating report

我一直在 Java Eclipse 中为学校的 Maven 项目工作。 我一直在使用 Eclemma 来获取代码覆盖率数据,但我的教授想从命令行运行我的代码并从那里获取代码覆盖率报告。 我一直在努力让 Jacoco 工作,但我之前真的从未使用过 Maven 或 Pom.xmls,而且我很迷茫。 这就是我现在的样子

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId> yada yada yada </groupId>
  <artifactId> yada yada yada </artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.jacoco</groupId>
      <artifactId>org.jacoco.ant</artifactId>
      <version>0.8.1</version>
    </dependency>
  </dependencies>

  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>org.jacoco</groupId>
          <artifactId>jacoco-maven-plugin</artifactId>
          <version>0.8.1</version>
          <executions>
            <execution>
              <id>default-prepare-agent</id>
              <goals>
                <goal>prepare-agent</goal>
              </goals>
            </execution>

            <execution>
              <id>post-integration-test</id>
              <phase>post-integration-test</phase>
              <goals>
                <goal>report</goal>
              </goals>
              <configuration>

                <dataFile>target/jacoco.exec</dataFile>

                <outputDirectory>target/jacoco-ut</outputDirectory>
              </configuration>
            </execution>
            <execution>
              <id>default-check</id>
              <goals>
                <goal>check</goal>
              </goals>
            </execution>
          </executions>
        </plugin>

        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.7.0</version>
          <configuration>
            <source>1.5</source>
            <target>1.5</target>
          </configuration>
        </plugin>
        <plugin>
          <groupId>org.codehaus.mojo</groupId>
          <artifactId>exec-maven-plugin</artifactId>
          <version>1.6.0</version>
          <configuration>
            <mainClass> yada yada yada </mainClass>
          </configuration>
          <executions>
            <execution>
              <id>run-selenium</id>
              <phase>integration-test</phase>
              <goals><goal>java</goal></goals>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.21.0</version>
          <configuration>
            <!-- nothing -->
          </configuration>
        </plugin>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

当我执行

$> mvn clean test jacoco:report

或者只是 jacoco:report,我明白了

[INFO] --- jacoco-maven-plugin:0.8.1:report (default-cli) @ MyFileLocation ---

[INFO] Skipping JaCoCo execution due to missing execution data file.

不知道此时该做什么...

检查插件

<plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.2</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>

        <plugin>
            <groupId>org.sonarsource.scanner.maven</groupId>
            <artifactId>sonar-maven-plugin</artifactId>
            <version>3.4.0.905</version>
        </plugin>

        <plugin>
            <groupId>org.jacoco</groupId>
            <artifactId>jacoco-maven-plugin</artifactId>
            <version>0.7.9</version>
            <configuration>
                <destFile>${sonar.jacoco.reportPath}</destFile>
                <append>true</append>
            </configuration>
            <executions>
                <execution>
                    <id>agent</id>
                    <goals>
                        <goal>prepare-agent</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>

仅添加此插件

 <plugin>
        <groupId>org.jacoco</groupId>
        <artifactId>jacoco-maven-plugin</artifactId>
        <version>0.7.9</version>
        <configuration>
            <destFile>${sonar.jacoco.reportPath}</destFile>
            <append>true</append>
        </configuration>
        <executions>
            <execution>
                <id>agent</id>
                <goals>
                    <goal>prepare-agent</goal>
                </goals>
            </execution>
        </executions>
    </plugin>

要使用 JaCoCo 记录覆盖率,您需要使用 JaCoCo Java 代理执行测试。

根据https://www.jacoco.org/jacoco/trunk/doc/prepare-agent-mojo.html

准备一个指向 JaCoCo 运行时代理的属性,该属性可以作为 VM 参数传递给被测应用程序。

默认情况下,它设置由maven-surefire-plugin选择的属性argLine ,但是似乎您实际上并没有使用maven-surefire-plugin而是使用exec-maven-plugin java目标,这

因此,请确保在您的测试期间使用 JaCoCo 代理,例如使用 exec exec-maven-pluginexec目标并将argLine传递给它 - 请参阅https://www.mojohaus.org/exec-maven-plugin/exec-mojo.html #参数

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