如何斷言 Uni 拋出給定錯誤？

Question

我有一個反應性 Quarkus 項目，我正在嘗試測試返回Uni<User>的方法。 該方法如下所示：

public Uni<User> searchUser(ObjectId userId) {
        return userRepository
            .findById(userId)
            .map(user -> {
                if (user != null) {
                    return user;
                } else {
                    throw new BusinessException("Could not find an user with the given id.");
                }
            });

到目前為止，一切都很好。 現在我正在嘗試測試一種方法，該方法斷言當存儲庫在findById上返回null時會引發錯誤。 根據mutiny 的文檔，這是斷言 Uni 拋出錯誤的方式：

Multi<Object> multi = Multi.createFrom().failure(() -> new IOException("Boom"));

AssertSubscriber<Object> subscriber = multi
        .subscribe().withSubscriber(AssertSubscriber.create(10));

subscriber.assertFailedWith(IOException.class, "Boom");

這是我改編的版本：

        @Test
        public void shouldThrowAnErrorWhenUserIsNotFound() {
            Mockito.when(userRepository.findById(Mockito.any())).thenReturn(Uni.createFrom().nullItem());

            AssertSubscriber subscriber = service.searchUser(new ObjectId()).subscribe().withSubscriber(AssertSubscriber.create());

            subscriber.assertFailedWith(BussinessException.class, "Could not find an user with the given id.");
        }

但它沒有建立。 我在.subscribe().withSubscriber()調用中收到此錯誤： Inferred type 'S' for type parameter 'S' is not within its bound; should implement 'io.smallrye.mutiny.subscription.UniSubscriber<? super br.com Inferred type 'S' for type parameter 'S' is not within its bound; should implement 'io.smallrye.mutiny.subscription.UniSubscriber<? super br.com Inferred type 'S' for type parameter 'S' is not within its bound; should implement 'io.smallrye.mutiny.subscription.UniSubscriber<? super br.com 。 我怎樣才能解決這個問題？ 還是有另一種方法來編寫這樣的測試？

Answer 1

刪除AssertSubscriber分配修復了類型錯誤，現在測試按預期工作。

        @Test
        public void shouldThrowAnErrorWhenUserIsNotFound() {
            Mockito.when(userRepository.findById(Mockito.any())).thenReturn(Uni.createFrom().nullItem());

            service.searchUser(new ObjectId())
                    .subscribe()
                    .withSubscriber(UniAssertSubscriber.create())
                    .assertFailedWith(BusinessException.class, "Could not find an user with the given id.");
        }