私は非同期メソッドを持っています。私はカウントダウンラッチを使って同期メソッドに変換しています。私はmockitoのタイムアウト機能を使わずに単体テストを書くのに苦労しています。私は、非同期メソッド呼び出しを待つことを確認する方法を取得する方法を考え出すことはできません。Java async-> sync converterを使用したMockito
public interface SyncExchangeService {
boolean placeOrder(Order order);
}
public interface ExchangeService {
void placeOrder(Order order, OrderCallback orderResponseCallback);
}
public interface OrderCallback {
public void onSuccess();
public void onFailure();
}
public class SyncExchangeServiceAdapter implements SyncExchangeService {
private ExchangeService exchangeService;
public SyncExchangeServiceAdapter(ExchangeService exchangeService) {
this.exchangeService = exchangeService;
}
@Override
public boolean placeOrder(Order order) {
final CountDownLatch countdownLatch=new CountDownLatch(1);
final AtomicBoolean result=new AtomicBoolean();
exchangeService.placeOrder(order, new OrderCallback() {
@Override
public void onSuccess() {
result.set(true);
countdownLatch.countDown();
}
@Override
public void onFailure(String rejectReason) {
result.set(false);
countdownLatch.countDown();
}
});
try {
countdownLatch.await();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
return result.get();
}
}
public class SyncExchangeServiceAdapterTest {
private ExchangeService mockExchange=mock(ExchangeService.class);
private SyncExchangeServiceAdapter adapter=new SyncExchangeServiceAdapter(mockExchange);
private Boolean response;
private ArgumentCaptor<Boolean> callback=CaptorArgumentCaptor.forClass(OrderCallback.class);
private CountDownLatch latch=new CountDownLatch(1);
@Test
public void testPlaceOrderWithSuccess() throws Exception {
final Order order=mock(Order.class);
Executors.newSingleThreadExecutor().submit(new Runnable() {
@Override
public void run() {
response=adapter.placeOrder(order);
latch.countDown();
}
});
verify(mockExchange,timeout(10)).placeOrder(eq(order), callbackCaptor.capture());
//the timeout method is not really recommended and could also fail randomly if the thread takes more than 10ms
callbackCaptor.getValue().onSuccess();
latch.await(1000,TimeUnit.MILLISECONDS);
assertEquals(true,response);
}
}
+1を作成すると役に立つでしょう。私はそれについて聞いたことがないが、それは非常に有用に見える。 – jhericks