使用Mockito和PowerMock模擬私有方法

Question

我試圖像這樣用PowerMock模擬私有方法

BalanceResponseGenerator balanceResponseGenerator = spy(new BalanceResponseGenerator());
when(balanceResponseGenerator, "getBalance",client.getParent(), request.getTerminal().getRetailPoint().getRetailNetwork(), result).thenReturn(new Balance());

但是真正的方法叫做，為什么會這樣呢？ 怎么了？ 我看到了幾個例子，但它們都不適合我。 請解釋！

Answer 1

我想問題是您在Mockito.when（..）上調用調用的時間。 PowerMockito.when（..）

文檔中提供了正確的示例

@RunWith(PowerMockRunner.class)
// We prepare PartialMockClass for test because it's final or we need to mock private or static methods
@PrepareForTest(PartialMockClass.class)
public class YourTestCase {
    @Test
    public void privatePartialMockingWithPowerMock() {        
        PartialMockClass classUnderTest = PowerMockito.spy(new PartialMockClass());

        // use PowerMockito to set up your expectation
        PowerMockito.doReturn(value).when(classUnderTest, "methodToMock", "parameter1");

        // execute your test
        classUnderTest.execute();

        // Use PowerMockito.verify() to verify result
        PowerMockito.verifyPrivate(classUnderTest, times(2)).invoke("methodToMock", "parameter1");
    }
}