【发布时间】：2019-12-28 13:26:53
【问题描述】：
我正在尝试为一个方法编写一个测试用例，但我猜该方法没有被嘲笑。
这里是返回 null 的方法：
response = httpClient.makeRequest(HttpMethod.POST, params.getUrl(), request, headers, null, param1.getRequest().getId(),
param1, false);
实际方法：
public HttpResponse makeRequest(String method, String url, String param, Header[] headers, String serviceName, String requestId,
className param1, Boolean useProxy) throws SystemException {
....
....
....
return httpResponse;
}
这是尊重方法的模拟代码：
Mockito.when(httpClient.makeRequest(Mockito.anyString(), Mockito.anyString(), Mockito.anyString(), Mockito.any(), Mockito.anyString(), Mockito.anyString(), Mockito.any(), Mockito.anyBoolean())).thenReturn(response);
我得到的异常：
com.morfeus.workflow.exception.WorkflowException: java.lang.NullPointerException
at com.morfeus.workflow.processor.WebhookProcessor.process(WebhookProcessor.java:164)
at com.morfeus.workflow.processor.script.WebhookScriptProcessorTest.process(WebhookScriptProcessorTest.java:157)
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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: java.lang.NullPointerException
at com.morfeus.workflow.processor.WebhookProcessor.process(WebhookProcessor.java:151)
... 32 more
【问题讨论】：
-
请发布所有代码并清除异常
-
"
..., Mockito.any(), ..." - 不要使用无类型匹配器。而是输入：Mockito.any(YourClassHere.class)。 -
在这种情况下也不起作用。
-
我知道我必须了解更多信息，但这是紧急的，这就是我问的原因。无论如何谢谢你。 :)
-
我想为您的测试添加一个建议，因为我经常看到这一点，我认为这会使测试变得很弱。尽量避免使用任何匹配器。您应该知道您希望传递给该方法的参数，因此请使用将捕获此参数的匹配器，例如等式（）。您的模拟行为未按预期运行的全部原因是因为它与参数不匹配。调试您的测试，中断方法调用的行，检查您的参数并找到不匹配的参数。正如所指出的，您不能在 null 上使用任何匹配器。
标签： java spring junit nullpointerexception mockito