/**
   * Adds a test to be executed on the grid. In case of test suite, all tests inside of test suite
   * will be executed sequentially on some remote node.
   *
   * @param test Test to add.
   */
  @Override
  public void addTest(Test test) {
    if (copy == null) {
      copy = new TestSuite(getName());
    }

    // Add test to the list of local ones.
    if (test instanceof GridJunit3LocalTestSuite) {
      String testName = ((TestSuite) test).getName();

      if (!locTests.contains(testName)) {
        locTests.add(testName);
      }
    }

    if (test instanceof GridJunit3TestSuite) {
      copy.addTest(((GridJunit3TestSuite) test).copy);

      super.addTest(new GridJunit3TestSuiteProxy(((GridJunit3TestSuite) test).copy, factory));
    } else if (test instanceof GridJunit3TestSuiteProxy) {
      copy.addTest(((GridJunit3TestSuiteProxy) test).getOriginal());

      super.addTest(test);
    } else if (test instanceof GridJunit3TestCaseProxy) {
      copy.addTest(((GridJunit3TestCaseProxy) test).getGridGainJunit3OriginalTestCase());

      super.addTest(test);
    } else if (test instanceof TestSuite) {
      copy.addTest(test);

      super.addTest(new GridJunit3TestSuiteProxy((TestSuite) test, factory));
    } else {
      assert test instanceof TestCase
          : "Test must be either instance of TestSuite or TestCase: " + test;

      copy.addTest(test);

      super.addTest(factory.createProxy((TestCase) test));
    }
  }