从 Jmockit 切换到 mockito

Question

所以我决定从 jmockit 转移到 mockito，这对我来说很奇怪，我不明白 mockito 中有些东西是如何工作的

我有一个简单的@BeforeEach 方法，当我的对象被模拟时，我总是得到一个空指针异常

@Mock
public EntityManager entityManager;

@Mock
public TimerSessionBean timerSessionBean;

@Mock
public Client client;

private CaseSetReminder caseSetReminder;

private Request request;
private Message message;

@BeforeEach
final void beforeEach() {
    request = new Request();
    message = new Message();

    String spaceId = "SPACE_ID";
    String threadId = "THREAD_ID";

    caseSetReminder = new CaseSetReminder();
    caseSetReminder.entityManager = entityManager;
    caseSetReminder.timerSessionBean = timerSessionBean;

    ThreadM thread = new ThreadM();

    thread.setName("spaces/" + spaceId + "/thread/" + threadId + "");
    Sender sender = new Sender();
    sender.setName("MyName");
    message.setSender(sender);
    message.setThread(thread);

    Reminder reminder = new Reminder("Do Something", ZonedDateTime.now(ZoneId.of("Europe/Athens")).plusMinutes(10),
            "DisplayName", "Europe/Athens", spaceId, threadId);

    reminder.setReminderId(1);
    timerSessionBean.nextReminderDate = reminder.getWhen();
}

它总是让我失望

Argument passed to verify() is of type TimerSessionBean and is not a mock!

Make sure you place the parenthesis correctly!

See the examples of correct verifications:
verify(mock).someMethod();

verify(mock, times(10)).someMethod();

verify(mock, atLeastOnce()).someMethod();

但这不是真的，它的 timerSessionBean 是模拟的，我的语法是正确的

这就是我运行触发 beforeEach 方法的方法

@Test
void mockitoTest() throws Exception {

    final String expectedDate = "12/12/2019 12:00 athens";
    message.setText("remind me ' set next reminder Test' at " + expectedDate);
    request.setMessage(message);

    // Already set in mock a nextReminder that is to be in 10 mins from now()
    //So this should not be set
    caseSetReminder.setRequest(request);
    caseSetReminder.setReminder();

    //Verifies that setNextReminder is called 0 times because Input reminderDate is AFTER the current
    verify(timerSessionBean , times(1)).setNextReminder(Mockito.any(Reminder.class), Mockito.any(ZonedDateTime.class));

}

希望大家帮我解决这个问题

Answer 1

您需要确保初始化 Mockito 引擎：

@BeforeEach
final void beforeEach() {
  MockitoAnnotations.initMocks(this);
  ..

或

 @RunWith(MockitoJUnitRunner.class) 
 public class TestClass{

此外，您不能像这样设置模拟 class 的字段：

timerSessionBean.nextReminderDate = reminder.getWhen();

尝试使用 doReturn()、when()、then() 配置行为

从 Jmockit 切换到 mockito

Switching from Jmockit to mockito

java

unit-testing

junit

mockito

jmockit