@Test
public void createsANotNullArriveHandler() {

    JsFunctionDeclarerBuilder jsFunctionDeclarerBuilder = mock(JsFunctionDeclarerBuilder.class);
    JsFunctionBodyBuilder jsFunctionBodyBuilder = new JsFunctionBodyBuilder(jsFunctionDeclarerBuilder);
    assertNotNull(jsFunctionBodyBuilder.whenCssSelectorArrives("#title"));
}