mockito 无返回值方法及异常mock

Posted 2023-02-27 ISaiSai

1. 无返回值方法的异常mock

     doThrow(new RuntimeException()).when(testMethod).testMethod(anyString());
        Assertions.assertThrows(Exception.class, () -> testMethod.testMethod("foo"));

2. 有返回值的普通mock

   given(testMethod.testMethodWithReturn(anyString())).willThrow(new Exception("TestError"));

或者

    when(testMethod.testMethodWithReturn(anyString())).thenThrow(new Exception("TestError"));

3. 根据特定入参抛出异常(answer方法)

        when(testMethod.testMethodWithReturn(anyString())).thenAnswer(
                new Answer() 
                    public Object answer(InvocationOnMock invocation) throws Exception 
                        Object[] args = invocation.getArguments();
                        if (args[0].equals("foo")) 
                            throw new Exception("mock 异常应答");
                        
                        return "ok";

                    
                );