@Test
  public void testFork() {
    MockTestDesigner builder =
        new MockTestDesigner(applicationContext) {
          @Override
          public void configure() {
            send(httpClient)
                .message(new DefaultMessage("Foo").setHeader("operation", "foo"))
                .header("additional", "additionalValue");

            send(httpClient)
                .message(new DefaultMessage("Foo").setHeader("operation", "foo"))
                .fork(true);
          }
        };

    builder.configure();

    TestCase test = builder.getTestCase();
    Assert.assertEquals(test.getActionCount(), 2);
    Assert.assertEquals(test.getActions().get(0).getClass(), SendMessageAction.class);
    Assert.assertEquals(test.getActions().get(1).getClass(), SendMessageAction.class);

    SendMessageAction action = ((SendMessageAction) test.getActions().get(0));
    Assert.assertEquals(action.getName(), "send");

    Assert.assertEquals(action.getEndpoint(), httpClient);
    Assert.assertEquals(action.getMessageBuilder().getClass(), StaticMessageContentBuilder.class);

    StaticMessageContentBuilder messageBuilder =
        (StaticMessageContentBuilder) action.getMessageBuilder();
    Assert.assertEquals(messageBuilder.getMessage().getPayload(String.class), "Foo");
    Assert.assertEquals(messageBuilder.getMessage().getHeader("operation"), "foo");
    Assert.assertEquals(messageBuilder.getMessageHeaders().size(), 1L);
    Assert.assertEquals(messageBuilder.getMessageHeaders().get("additional"), "additionalValue");

    Assert.assertFalse(action.isForkMode());

    action = ((SendMessageAction) test.getActions().get(1));
    Assert.assertEquals(action.getName(), "send");

    Assert.assertEquals(action.getEndpoint(), httpClient);
    Assert.assertEquals(action.getMessageBuilder().getClass(), StaticMessageContentBuilder.class);

    Assert.assertTrue(action.isForkMode());
  }