title: How to calculate code coverage in Hudson using emma for a multi-module maven project but only run tests once
body: <p>We have several multi-module projects which I want to run emma against, but I don't want the tests to be run twice, because this results in misleading statistics on the Hudson project home page as unit tests are counted twice.</p>
  
  <p>For a single module project, we can ommit the install goal and just use clean emma:emma to run the tests once, is there any way we can test only using emma instrumented byte code and then build &amp; install the project artifacts without running the tests a second time?  Using -Dmaven.tests.skip=true causes emma to fail.</p>
  
  <p>For a full release (i.e. mvn release:perform) the tests should be run un-instrumented.</p>