title: How do I get Eclipse to run all of my Groovy unit tests?
body: <p>I have an Eclipse project with many unit tests written in Groovy. I can run the tests in each individual class using Eclipse's GUnit run configuration. I open this configuration, select the "Run a single test" radio button, and select the class whose tests I want to run. This works fine, however I want to run all of the tests in the the project at once.</p>
  
  <p>When I open my run configuration, select the "Run all tests in the selected project, package or source folder" radio button and select my project, Eclipse gives the error "No tests found with test runner 'JUnit 4'."</p>
  
  <p>How do I get Eclipse to run all of the tests in my project?</p>