java - 使用 PowerMockito 在最终类中模拟私有静态方法

Question

我有一个带有私有静态方法的最终类，它在另一个静态方法中调用

public final class GenerateResponse{
      private static Map<String, String> getErrorDetails(JSONObject jsonObject) {
         // implementation
      }

      public static String method1(params...){
         Map<String, String> map = getErrorDetails(new JsonObject());

         // implementation
      }
}

我需要模拟私有静态方法调用getErrorDetails()，但我的测试是调用实际方法。这是我的代码：

@RunWith(PowerMockRunner.class)
@PrepareForTest(GenerateResponse.class)
public class GenerateResponseTest{

@Test
public void testFrameQtcErrorResponse() throws Exception {
    Map<String, String> errorDtls = new HashMap<String, String>();

    PowerMockito.spy(GenerateResponse.class);
    PowerMockito.doReturn(errorDtls).when(GenerateResponse.class, "getErrorDetails", JSONObject.class);
    String response = GenerateResponse.method1(params...);
}

Answer 1

您应该在方法中使用参数匹配器when。我已经稍微修改了您的代码以运行测试用例。

实际方法

public final class GenerateResponse{

    private static Map<String, String> getErrorDetails(JSONObject jsonObject) {
       return null;
    }

    public static String method1() {
    Map<String, String> map = getErrorDetails(new JSONObject());
    return map.get("abc");
    }
}

测试方法

@RunWith(PowerMockRunner.class)
@PrepareForTest(GenerateResponse.class)
public class GenerateResponseTest {

@Test
public void testFrameQtcErrorResponse() throws Exception {
    Map<String, String> errorDtls = new HashMap<String, String>();
    errorDtls.put("abc", "alphabets");

    PowerMockito.mockStatic(GenerateResponse.class, Mockito.CALLS_REAL_METHODS);

    PowerMockito.doReturn(errorDtls).when(GenerateResponse.class,
            "getErrorDetails", Matchers.any(JSONObject.class));

    String response = GenerateResponse.method1();

    System.out.println("response =" + response);

   }

 }

输出

response =alphabets