关于 java:PowerMockito.doReturn 返回 null

PowerMockito.doReturn returns null

这是我正在测试的课程：

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public class A {

public Integer callMethod(){
return someMethod();
}

private Integer someMethod(){
//Some Code
HttpPost httpPost = new HttpPost(oAuthMessage.URL);
//Some Code
HttpClient httpClient = new DefaultHttpClient();
HttpResponse httpResponse = httpClient.execute(httpPost); ------1
Integer code = httpResponse.getStatusLine().getStatusCode(); ---2
return code;
}

现在我想模拟第 1 行

代替

PowerMockito.doReturn(httpResponse).when(httpClient).execute(httpPost);

你应该使用

1	PowerMockito.when(httpResponse.execute(httpPost)).thenReturn(httpResponse);

你的测试也有一些问题：不正确的模拟构造函数，你根本不需要 httpResponse。

更新此代码对我来说可以正常工作：

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@RunWith(PowerMockRunner.class)
@PowerMockIgnore("javax.crypto.*")
@PrepareForTest({ HttpPost.class, DefaultHttpClient.class, A.class })
public class TestA {

@Test
public void testA() throws Exception {
HttpPost httpPost = Mockito.mock(HttpPost.class);
PowerMockito.whenNew(HttpPost.class).withArguments(oAuthMessage.URL).thenReturn(httpPost);

DefaultHttpClient defaultHttpClientMock = PowerMockito.mock(DefaultHttpClient.class);
HttpResponse httpResponse = PowerMockito.mock(HttpResponse.class);
PowerMockito.whenNew(DefaultHttpClient.class).withNoArguments().thenReturn(defaultHttpClientMock);

PowerMockito.when(defaultHttpClientMock.execute(httpPost)).thenReturn(httpResponse);

StatusLine statusLine = PowerMockito.mock(StatusLine.class);

PowerMockito.when(httpResponse.getStatusLine()).thenReturn(statusLine);
Integer expected = new Integer(0);
PowerMockito.when(statusLine.getStatusCode()).thenReturn(expected);

A a = new A();
Assert.assertEquals(expected, a.callMethod());
}
}