Maven JaCoCo plugin error

Question

I have configured the Maven JaCoCo plugin as follows in my pom.xml file:

    UTF-8         


        

Answer 1

I had the same trouble with jacoco and maven. It was related to a parent pom overwriting the configuration of surefire. In this case, that plugin didn't used the argument (for jvm argument) defining the agent.

The solution was to put the "argLine" configuration element back

  maven-surefire-plugin
  
   ${argLine}
  
 

Full plugin conf looks like

  maven-surefire-plugin
  
    true
  
  
    
      unit-test
      test
      
        test
      
      
        ${maven.test.skip}
        ${argLine}
        
          **/*IntegrationTest.java
        
      
    
    
      integration-test
      integration-test
      
        test
      
      
        ${skipITs}
        ${argLine}
        
          **/*IntegrationTest.java
        
      
    
  


    org.jacoco
    jacoco-maven-plugin
    0.5.10.201208310627
    
        ${maven.test.skip}
        ${basedir}/target/coverage-reports/jacoco-unit.exec
        ${basedir}/target/coverage-reports/jacoco-unit.exec
        
file
        true
    
    
        
            jacoco-initialize
            
                prepare-agent
            
        
        
            jacoco-site
            verify
            
                report
            
        
    

Hope it'll be usefull