@Test
 public void linkHandlerTest() throws IOException {
   Runner runner = new Runner();
   runner.setDriver(driver);
   CommandFactory cf = runner.getCommandFactory();
   TestCase testCase = Binder.newTestCase("dummy", "dummy", wsr.getBaseURL());
   testCase.addCommand(cf, "open", "/link_handler.html");
   testCase.addCommand(cf, commandName, "link=" + argument);
   Result result = runner.execute(testCase);
   assertThat(result, is(instanceOf(resultClass)));
 }