使用Mockito测试引发未捕获的自定义异常的方法

问题描述

如何编写基于Mockito的JUnit方法来测试此方法adduser()?我尝试编写一个，但是失败并显示一条错误消息，指出未处理异常.错误针对以下内容显示:

How do I write a Mockito-based JUnit method to test this method adduser()? I tried writing one, but it's failing with an error message saying exception is not handled. The error is displayed for:

when(service.addUser("nginx")).thenReturn("apache");

假设业务类中的addUser()方法从不捕获任何异常，并且重新抛出也没有完成.

Assume addUser() method in business class never catches any exception and rethrowing is not done.

class Business {
    public User addUser() throws ServiceException{
        User user = service.addUser("nginx");
        return user;
    }
}

测试案例方法:

在测试类中，我正在模拟具有@Mock属性的服务层类并将其注入.

Here in the test class I am mocking the service layer class with @Mock attribute and injecting it.

@Mock
Service service;   

@InjectMocks
Business business = new Business();

@Test
public void testAddUser() {
    when(service.addUser("nginx")).thenReturn("apache");    
    User user = business.addUser("nginx");
    assertNotNull(user);
}

请告诉我如何处理测试用例中的异常情况.

Please tell me how to handle the exception scenario in the test case.

推荐答案

在测试方法中声明异常.

Declare the exception in the test method.

public void testAddUser() throws ServiceException{
...
}

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