@Test
public void when_getSubmittedForm_is_called_on_initial_request_then_null_is_returned() {

    // given
    initializeRequestParameterMap(new HashMap<String, String>() {
    });
    when(facesContext.isPostback()).thenReturn(false);
    // when
    UIComponent result = utils.getSubmittedForm(facesContext);
    // then
    assertNull(result);
}