title: Jacoco Mvn Plugin fails all unit tests
body: <p>Am confused here, I am running maven 3, java 1.6 and have a maven project configured, everything works including all the unit tests. Now i come to add the Jacoco plugin, configured thus</p>
  
  <pre><code>        &lt;plugin&gt;
              &lt;groupId&gt;org.jacoco&lt;/groupId&gt;
              &lt;artifactId&gt;jacoco-maven-plugin&lt;/artifactId&gt;
              &lt;version&gt;0.5.5.201112152213&lt;/version&gt;
              &lt;configuration&gt;
                  &lt;destfile&gt;${basedir}/target/coverage-reports/jacoco-unit.exec&lt;/destfile&gt;
                  &lt;datafile&gt;${basedir}/target/coverage-reports/jacoco-unit.exec&lt;/datafile&gt;
              &lt;/configuration&gt;
              &lt;executions&gt;
                  &lt;execution&gt;
                      &lt;id&gt;jacoco-initialize&lt;/id&gt;
                      &lt;goals&gt;
                          &lt;goal&gt;prepare-agent&lt;/goal&gt;
                      &lt;/goals&gt;
                  &lt;/execution&gt;
                  &lt;execution&gt;
                      &lt;id&gt;jacoco-site&lt;/id&gt;
                      &lt;phase&gt;package&lt;/phase&gt;
                      &lt;goals&gt;
                          &lt;goal&gt;report&lt;/goal&gt;
                      &lt;/goals&gt;
                  &lt;/execution&gt;
              &lt;/executions&gt;
          &lt;/plugin&gt;
  </code></pre>
  
  <p>now when i try to run mvn clean package none of the unit tests pass and there is no coverage report at all.</p>
  
  <p>Can anyone point out where i am going wrong please?</p>
  
  <p>thanks in advance</p>