Question

我有一个简单的场景，我试图在调用方法时验证某些行为（即某个方法是使用给定参数调用的，在这种情况下是一个函数指针）。以下是我的课程：

@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        ConfigurableApplicationContext context = SpringApplication.run(Application.class, args);

        AppBootStrapper bootStrapper = context.getBean(AppBootStrapper.class);
        bootStrapper.start();
    }
}

@Component
public class AppBootStrapper {
    private NetworkScanner networkScanner;
    private PacketConsumer packetConsumer;

    public AppBootStrapper(NetworkScanner networkScanner, PacketConsumer packetConsumer) {
        this.networkScanner = networkScanner;
        this.packetConsumer = packetConsumer;
    }

    public void start() {
        networkScanner.addConsumer(packetConsumer::consumePacket);
        networkScanner.startScan();
    }
}

@Component
public class NetworkScanner {
    private List<Consumer<String>> consumers = new ArrayList<>();

    public void startScan(){
        Executors.newSingleThreadExecutor().submit(() -> {
            while(true) {
                // do some scanning and get/parse packets
                consumers.forEach(consumer -> consumer.accept("Package Data"));
            }
        });
    }

    public void addConsumer(Consumer<String> consumer) {
        this.consumers.add(consumer);
    }
}

@Component
public class PacketConsumer {
    public void consumePacket(String packet) {
        System.out.println("Packet received: " + packet);
    }
}

@RunWith(JUnit4.class)
public class AppBootStrapperTest {

    @Test
    public void start() throws Exception {
        NetworkScanner networkScanner = mock(NetworkScanner.class);
        PacketConsumer packetConsumer = mock(PacketConsumer.class);
        AppBootStrapper appBootStrapper = new AppBootStrapper(networkScanner, packetConsumer);

        appBootStrapper.start();

        verify(networkScanner).addConsumer(packetConsumer::consumePacket);
        verify(networkScanner, times(1)).startScan();
    }
}

我想通过注册数据包使用者来确认bootStrapper确实做了正确的设置（可能有其他消费者稍后注册，但这个是强制性的），然后称为startScan。执行测试用例时，我收到以下错误消息：

Argument(s) are different! Wanted:
networkScanner bean.addConsumer(
    com.spring.starter.AppBootStrapperTest$$Lambda$8/438123546@282308c3
);
-> at com.spring.starter.AppBootStrapperTest.start(AppBootStrapperTest.java:24)
Actual invocation has different arguments:
networkScanner bean.addConsumer(
    com.spring.starter.AppBootStrapper$$Lambda$7/920446957@5dda14d0
);
-> at com.spring.starter.AppBootStrapper.start(AppBootStrapper.java:12)

从例外情况来看，显然函数指针不一样。

我是以正确的方式接近这个吗？我有什么基本的东西吗？我玩了一遍，并有一个消费者注入PacketConsumer只是为了看它是否有所不同，这是好的，但我知道这当然不是正确的方法。

任何帮助，对此的观点将不胜感激。

Mockito：使用功能参数调用验证方法

0 个答案: