如何解决java.lang.AssertionError:预期的异常:Mockito中的java.lang.Exception

时间:2016-05-12 09:10:35

标签: java spring junit mockito

我有一个使用spring验证器的用户验证器的书面单元测试用例。下面是类。我面临的问题是因为在spring validator的validate方法中,调用service来检查用户是否是admin。但是admin服务会引发异常。所以我用try catch块覆盖了。现在,对于单元测试用例,我收到错误。

public class UserValidator implements Validator {

    @Override
    public boolean supports(Class clazz) {
      return User.class.equals(clazz);
    }

    @Override
    public void validate(Object target, Errors errors) {
      User user = (User) target;

      if(user.getName() == null) {
          errors.rejectValue("name", "InValid user");
      }
//try catch block because adminservice throws exeption
      try{
          AdminUser adminUser= adminservice.CheckAdmin(user.getId);
       }

      Catch(Exception e){
            e.printStackTrace
         } 

    }

}

Public uservAlidatorTest(){
@before
//set up done

@test(expected= Exception.class)
public testException(){
User user= new user();
user.setId("JUNK");
mockito.when(adminservice.CheckAdmin(user.getId)).thenThrow(new Exception("Invalid user"))
BindException error = new BindException(User, "user");
UserValidator(user,error); 

}

}

错误跟踪:

java.lang.AssertionError: Expected exception: java.lang.Exception
    at org.junit.internal.runners.statements.ExpectException.evaluate(ExpectException.java:35)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:69)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:48)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:292)
    at org.mockito.internal.runners.JUnit45AndHigherRunnerImpl.run(JUnit45AndHigherRunnerImpl.java:37)
    at org.mockito.runners.MockitoJUnitRunner.run(MockitoJUnitRunner.java:62)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

2 个答案:

答案 0 :(得分:0)

在验证程序实现中,您正在吞噬任何被抛出的异常。即使您正在模拟您的服务方法以抛出异常,但它在验证程序中被吞没,并且测试中不会抛出任何异常。更换验证器中的catch块,如下所示

替换

Image

try{
     AdminUser adminUser= adminservice.CheckAdmin(user.getId);
  }
  Catch(Exception e){
     e.printStackTrace
  } 

答案 1 :(得分:0)

您正在捕获CheckAdmin调用中的每个异常,并且您的单元测试需要一个。除非它之前被抛出:

  

用户用户=(用户)目标;

     

if(user.getName()== null){             errors.rejectValue(“name”,“InValid user”); }

您永远不会得到任何异常,因此您的单元测试将始终失败。