JaCoCo for Integration Test Coverage

[Rohan Kulkarni]

11:51 AM (less than a minute ago)

Hi, I am having a hard time to get JaCoCo plugin working to get integration test (IT) coverage for my Spring boot app with Maven.

Here's my configuration for the jacoco-maven-plugin for IT:

<execution>
  <id>pre-integration-test</id>
  <phase>pre-integration-test</phase>
  <goals>
       <goal>prepare-agent</goal>
   </goals>
   <configuration>
       <destFile>${sonar.jacoco.itReportPath}</destFile>
    </configuration>
</execution>
<execution>
    <id>post-integration-test</id>
    <phase>post-integration-test</phase>
    <goals>
        <goal>report</goal>
     </goals>
    <configuration>
        <dataFile>${sonar.jacoco.itReportPath}</dataFile>
        <outputDirectory>${project.reporting.outputDirectory}/jacoco-it</outputDirectory>
     </configuration>
</execution>

And we are using the spring-boot-maven-plugin for running the integration tests as below,

<plugin>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-maven-plugin</artifactId>
   <version>1.3.7.RELEASE</version>
   <executions>
      <execution>
         <id>pre-integration-test</id>
         <goals>
              <goal>start</goal>
         </goals>
         <configuration>
              <fork>false</fork>
              <arguments>
                    <argument>--server.port=${flex.module.port}</argument>
                    <argument>--logging.config=${project.basedir}/src/test/resources/test-log4j.xml</argument>
                    <argument>--server.tomcat.accesslog.enabled=false</argument >
                    <argument>--server.tomcat.basedir=${project.build.directory}</argument>
              </arguments>
         </configuration>
      </execution>
      <execution>
          <id>post-integration-test</id>
          <goals>
               <goal>stop</goal>
          </goals>
      </execution>
   </executions>

</plugin>

When I run "mvn clean verify" I see the following error,

--- jacoco-maven-plugin:0.7.7.201606060606:report (post-integration-test) @ se-service ---
[INFO] Skipping JaCoCo execution due to missing execution data file.

      Looks like the .exec file is not getting generated by the Agent. Any help would be appreciated ?

Thanks

Rohan

[Evgeny Mandrikov]

As stated in documentation about "prepare-agent" mojo at page http://www.jacoco.org/jacoco/trunk/doc/prepare-agent-mojo.html :

Prepares a property pointing to the JaCoCo runtime agent that can be passed as a VM argument to the application under test.

By default it will set "argLine" property, but spring-boot-maven-plugin doesn't take into account this property by default and you're not passing it explicitly , hence spring-boot-maven-plugin starts JVM without agent.

[Rohan Kulkarni]

I tried passing it explicitly in the spring-boot-maven-plugin but it still did not generate the exec file for integration test. I can see it is setting the argLine property correctly in the pre-integration-test step. Not sure why that agent is not getting started.

Rohan

[Evgeny Mandrikov]

Maybe because you also have "<fork>false</fork>" that disables forking of JVM ?

Also clear that excerpt of pom.xml is not enough to reproduce your difficulty. So please provide full runnable example.