R2dbc 存储库始终为 null 和 Mockito

Question

我正在尝试测试服务，但存储库始终是 null。 使用 JPA 存储库时，我从来没有遇到过这个问题。 我不确定它是否与 ReactiveCrudRepository 有关。 有没有人遇到过这个问题？

    @RunWith(MockitoJUnitRunner.class)
    class UserTest {
    

        @InjectMocks
        private UserService underTest;
  
        @Mock
        private  UserRepository userRepository;

        @Mock
        private AutoCloseable closeable;
    
        @BeforeEach
        public void init() {
            closeable = MockitoAnnotations.openMocks(this);
        }
    
        @AfterEach
        public void closeService() throws Exception {
            closeable.close();
        }
    
        @Test
        void getApplicableUsers() {

    
            when(userRepository.findAll().collectList().block()).thenReturn(new ArrayList<>());
            Set<User> expected = underTest.getUsers(getUser(), getUsers());
    
            verify(underTest, times(1)).updateUsers(getUser(),expected);
    
        }
    
    }

---

>     error
>     
>     java.lang.NullPointerException
>       at com.user.UserServiceTest.updateUsers(UserService.java:99)
>       at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
>       at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.base/java.lang.reflect.Method.invoke(Method.java:566)
>       at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:688)
>       at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
>       at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
>       at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)
>       at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)
>       at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)
>       at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
>       at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
>       at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
>       at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
>       at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
>       at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
>       at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
>       at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
>       at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:210)
>       at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
>       at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:206)
>       at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:131)
>       at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:65)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
>       at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129)
>       at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127)
>       at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84)
>       at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
>       at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143)
>       at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129)
>       at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127)
>       at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84)
>       at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
>       at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143)
>       at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129)
>       at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127)
>       at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126)
>       at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84)
>       at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
>       at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
>       at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
>       at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108)
>       at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
>       at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
>       at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)
>       at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)
>       at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:96)
>       at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:75)
>       at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:99)
>       at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:79)
>       at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:75)
>       at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:61)
>       at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
>       at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.base/java.lang.reflect.Method.invoke(Method.java:566)
>       at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
>       at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
>       at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
>       at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
>       at com.sun.proxy.$Proxy5.stop(Unknown Source)
>       at org.gradle.api.internal.tasks.testing.worker.TestWorker.stop(TestWorker.java:135)
>       at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
>       at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.base/java.lang.reflect.Method.invoke(Method.java:566)
>       at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
>       at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
>       at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:182)
>       at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:164)
>       at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:414)
>       at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
>       at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
>       at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
>       at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
>       at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
>       at java.base/java.lang.Thread.run(Thread.java:829)

------------- 更新 1 --------

我想出了问题所在，但没有找到解决方案。 如果我使用.block，它总是 null，但是在这种情况下我需要使用 block。 有没有人能够使用 block 或 optionalBlock() 并能够模拟它？

Answer 1

findAll()方法未被模拟，因此返回 null 值。 您应该模拟userRepository.findAll()而不是userRepository.findAll().collectList().block() 。

尝试这个：

when(userRepository.findAll()).thenReturn(Flux.empty());

Answer 2

您能否验证您的服务 class 并查看您是否有任何构造函数，但构造函数中没有您的存储库。 您需要删除构造函数或使用作为 null 的 repo 初始化您的服务 object。 我今天遇到了这个问题； 我删除了构造函数，它起作用了。