Spring @MockBean 没有注入 Cucumber [英] Spring @MockBean not injected with Cucumber

问题描述

我正在实现一个 SchedulerService，它使用 AgentRestClient bean 从外部系统获取一些数据.它看起来像这样:

I'm implementing a SchedulerService that uses a AgentRestClient bean to get some data from an external system. It looks something like this:

@Service
public class SchedulerService {

  @Inject
  private AgentRestClient agentRestClient;

  public String updateStatus(String uuid) {
    String status = agentRestClient.get(uuid);
    ...
  }
  ...
}

为了测试这个服务，我正在使用 Cucumber，同时我正在尝试使用 Spring Boot 的 @MockBean 注释来模拟 AgentRestClient 的行为，如如下:

To test this service, I'm using Cucumber while at the same time I'm trying to mock the behavior of AgentRestClient using Spring Boot's @MockBean annotation, as follows:

import cucumber.api.CucumberOptions;
import cucumber.api.java.Before;

import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.mock.mockito.MockBean;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest(classes = CentralApp.class)
@CucumberOptions(glue = {"com.company.project.cucumber.stepdefs", "cucumber.api.spring"})
public class RefreshActiveJobsStepDefs {

  @MockBean
  private AgentRestClient agentRestClient;

  @Inject
  private SchedulerService schedulerService;

  @Before
  public void setUp() throws Exception {
    MockitoAnnotations.initMocks(this);
    given(agentRestClient.get(anyString())).willReturn("FINISHED");//agentRestClient is always null here
  }

  //Skipping the actual Given-When-Then Cucumber steps...
}

当我尝试运行任何 Cucumber 场景时，agentRestClient 永远不会被模拟/注入.setUp() 方法因 NPE 失败:

When I try to run any Cucumber scenario, the agentRestClient is never mocked/injected. The setUp() method fails with a NPE:

java.lang.NullPointerException
  at com.company.project.cucumber.stepdefs.scheduler.RefreshActiveJobsStepDefs.setUp(RefreshActiveJobsStepDefs.java:38)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:498)
  at cucumber.runtime.Utils$1.call(Utils.java:37)
  at cucumber.runtime.Timeout.timeout(Timeout.java:13)
  at cucumber.runtime.Utils.invoke(Utils.java:31)
  at cucumber.runtime.java.JavaHookDefinition.execute(JavaHookDefinition.java:60)
  at cucumber.runtime.Runtime.runHookIfTagsMatch(Runtime.java:223)
  at cucumber.runtime.Runtime.runHooks(Runtime.java:211)
  at cucumber.runtime.Runtime.runBeforeHooks(Runtime.java:201)
  at cucumber.runtime.model.CucumberScenario.run(CucumberScenario.java:40)
  at cucumber.runtime.model.CucumberFeature.run(CucumberFeature.java:165)
  at cucumber.runtime.Runtime.run(Runtime.java:121)
  at cucumber.api.cli.Main.run(Main.java:36)
  at cucumber.api.cli.Main.main(Main.java:18)

为了达到这一点，我遵循了以下 2 个资源，但仍然没有成功:

To get to this point I followed the following 2 resources, but still no luck getting it working:

• https://spring.io/blog/2016/04/15/testing-improvements-in-spring-boot-1-4
• http://docs.spring.io/spring-boot/docs/current/api/org/springframework/boot/test/mock/mockito/MockBean.html

罪魁祸首似乎是将 Cucumber 集成到 Spring 中，因为当我使用普通的 JUnit @Test 方法尝试相同的方法时，模拟按预期工作.

The culprit seems to be Cucumber integration into Spring, because when I try the same approach with a plain JUnit @Test method, mocking works as expected.

那么您能否告诉我我错过或误解了哪些 Cucumber 或 Spring 配置?

So could you please tell me what Cucumber or Spring configuration have I missed or misunderstood?

谢谢，波格丹

推荐答案

好的，所以我发现 @MockBean 注释被忽略了，因为我是用 Cucumber 运行测试而不是运行它们弹簧靴.呃……

OK, so I found out that the @MockBean annotation is ignored because I was running the tests with Cucumber instead of running them through Spring Boot. Duh...

所以我将 @MockBean 替换为 @Mock，然后我手动将该模拟注入到我的服务层中.

So I replaced @MockBean with @Mock, and then I manually inject that mock into my service layer.

所以现在我的测试看起来像这样:

So now my test looks like this:

@SpringBootTest(classes = CentralApp.class)
@ContextConfiguration
public class RefreshActiveJobsStepDefs {

  @Inject
  private SchedulerService schedulerService;

  @Mock
  private AgentRestClient agentRestClient;

  @Before
  public void setup() throws Exception {
   MockitoAnnotations.initMocks(this);
   given(agentRestClient.get(anyString())).willReturn("FINISHED");
   schedulerService.setAgentRestClient(agentRestClient);
  }
  //Skipping the actual Given-When-Then Cucumber steps...
}

如您所见，我还删除了 @CucumberOptions(glue=...) 注释，现在我确保将它传递给运行器，这对于 CLI 将使用--glue 选项.

As you can see I've also removed the @CucumberOptions(glue=...) annotation, and now I make sure to pass it though the runner, which for CLI would be by using the --glue option.

我希望这会有所帮助.

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