@Test
public void givenDifferentNewPasswordsShouldSendErrorMessageTest() throws Exception {

    sut.setPassword(NEW_PASSWORD);
    sut.setPasswordRepe(NEW_PASSWORD + "INVALID");
    final String result = sut.changePassword();
    assertThat(result, is(nullValue()));
    verify(sut).addErrorMessage("error.newPasswordsNotEquals");
}