public void testModulesSelector() throws ConfigurationException {
    if (PlatformTestUtil.COVERAGE_ENABLED_BUILD) return;

    Module module1 = getModule1();
    Module module2 = getModule2();
    JUnitConfigurable editor = new JUnitConfigurable(myProject);
    try {
      JUnitConfiguration configuration = createConfiguration(findTestA(module2));
      editor.getComponent(); // To get all the watchers installed.
      Configurable configurable = new RunConfigurationConfigurableAdapter(editor, configuration);
      JComboBox comboBox = editor.getModulesComponent();
      configurable.reset();
      assertFalse(configurable.isModified());
      assertEquals(module2.getName(), ((Module) comboBox.getSelectedItem()).getName());
      assertEquals(
          ModuleManager.getInstance(myProject).getModules().length + 1,
          comboBox.getModel().getSize()); // no module
      comboBox.setSelectedItem(module1);
      assertTrue(configurable.isModified());
      configurable.apply();
      assertFalse(configurable.isModified());
      assertEquals(
          Collections.singleton(module1), ContainerUtilRt.newHashSet(configuration.getModules()));
    } finally {
      Disposer.dispose(editor);
    }
  }
 /**
  * Find the class for the projection
  *
  * @param proj projection
  * @return corresponding ProjectionClass (or null if not found)
  */
 private ProjectionClass findProjectionClass(Projection proj) {
   Class want = proj.getClass();
   ComboBoxModel projClassList = projClassCB.getModel();
   for (int i = 0; i < projClassList.getSize(); i++) {
     ProjectionClass pc = (ProjectionClass) projClassList.getElementAt(i);
     if (want.equals(pc.projClass)) {
       return pc;
     }
   }
   return null;
 }