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在我的應用程序中,我使用observer模式進行某些操作,我想在單元測試中對它們進行測試。問題是我不知道如何使用junit/mockito /別的東西來測試觀察者。任何幫助?Junit/Mockito - 等待方法執行
例如,這是我的單元測試:
@Before
public void setUp() throws IOException, Exception {
observer = new GameInstanceObserver(); // observable (GameInstance) will call update() method after every change
GameInstance.getInstance().addObserver(observer); // this is observable which is updated by serverService
}
@Test(expected = UserDataDoesntExistException.class)
public void getRoomUserData_usingNullKey_shouldThrowUserDataDoesntExist() throws InterruptedException, UserDataDoesntExistException {
serverService.createRoom("exampleRoom"); // this operation is asynchronous and updates GameInstance data (as I wrote before GameInstance is Observable)
Thread.sleep(400); // how to do it in better way?
GameInstance gi = (GameInstance) observer.getObservable();
assertTrue(gi.getRoom("exampleRoom").getRoomId().equals("exampleRoom"));
}
我想不使用Thread.sleep()
並以這種方式使用它(或類似):
@Test(expected = UserDataDoesntExistException.class)
public void getRoomUserData_usingNullKey_shouldThrowUserDataDoesntExist() throws InterruptedException, UserDataDoesntExistException {
serverService.createRoom("exampleRoom"); // this operation is asynchronous and updates GameInstance data (as I wrote before GameInstance is Observable)
waitUntilDataChange(GameInstance.getInstance()); // wait until observable will be changed so I know that it notified all observer and I can validate data
GameInstance gi = (GameInstance) observer.getObservable();
assertTrue(gi.getRoom("exampleRoom").getRoomId().equals("exampleRoom"));
}
謝謝!有用! – pepuch
僅供參考,在GitHub中有一個CountDownLatchAnswer被設計用於此目的:https://github.com/dancerjohn/LibEx/blob/master/testlibex/src/main/java/org/libex/test/mockito/answer /CountDownLatchAnswer.java –
@JohnB,謝謝。我在哪裏可以閱讀關於這個LibEx庫的更多信息?如何使用它,它創建了什麼等等? – pepuch