春季启动测试-PowerMockito模拟和存根构造函数 [英] Spring boot test - PowerMockito to mock and stub constructor

问题描述

使用Spring Boot Starter测试来测试我的应用程序，但是我正在使用第三方库.假设我们有一个TRequest类，它有一些构造函数，我想对该构造函数进行模拟和存根以返回结果.

Using Spring boot starter test for testing my application but I am using third party library. Lets suppose we have a class TRequest and it has some constructor and I want to mock and stub that constructor to return the result.

@SpringBootTest
@RunWith(SpringRunner.class)
@PrepareForEverythingForTest
public class TestClass {

@MockBean
TRequest trequest ; 

@Before
public void setUp() throws Exception {
    PowerMockito.whenNew(TRequest.class).withAnyArguments().thenReturn(trequest);

}
}

现在，当我尝试使用new创建构造函数时，它没有返回正确的存根结果.

Now when I am trying to create the constructor using new, it is not returning the correct stubbed result.

  TRequest trequest1 = new TRequest("apiKey","secretKey") ; 
  trequest.equals(trequest1) ; // false but I want it to be true

推荐答案

使用了 jackson 第三方库进行测试.-由于PowerMock而获得ClassLoader异常.

Have used a jackson third party lib to test with. - getting ClassLoader exceptions because of PowerMock though.

@SpringBootTest
@RunWith(PowerMockRunner.class)
@PowerMockRunnerDelegate(SpringRunner.class)
public class TestPowerMockito {

    @MockBean
    ObjectMapper object;

    @Before
    public void init() throws Exception {
        PowerMockito.whenNew(ObjectMapper.class).withAnyArguments().thenReturn(object);
    }

    @Test
    public void test() {
        assertEquals(object, new ObjectMapper());
    }

}

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