title: No tests found with test runner 'JUnit 4'
body: <p>My Java test worked well from Eclipse. But now, when I relaunch test from the run menu, I get the following message: </p>
  
  <pre><code>No tests found with test runner 'JUnit 4'
  </code></pre>
  
  <p>In the <code>.classpath</code> file I have all <code>jar</code> files, and at the end have: </p>
  
  <pre><code>&lt;classpathentry exported="true" kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/4"/&gt;
      &lt;classpathentry kind="output" path="bin"/&gt;
  &lt;/classpath&gt;
  </code></pre>
  
  <p>How can I resolve this error and get tests running again?</p>