@Test
public void should_show_error_when_validate_empty_password_and_password() {

    when(loginService.isUsernameValid("")).thenReturn(false);
    when(loginService.isPasswordValid("")).thenReturn(false);
    when(loginService.isUrlValid("http://10.29.3.184:3000")).thenReturn(true);
    boolean valid = loginPresenter.validate("", "", "http://10.29.3.184:3000");
    assertEquals(valid, false);
}