PowerMock抱怨不正确的参数，即使私人方法被模拟

Question

我正在尝试powermock，并试图模拟这样的私人方法：

expectPrivate(n, "doLogin", anyString(), anyString()).andReturn(true);

也就是说，我希望true从doLogin返回，而与传递的参数无关。委派该私人方法的公共方法只需通过参数即可。这是要嘲笑的类的定义：

class N {
        public boolean login(String username, String password) {
            return doLogin(username, password);
        }
        private boolean doLogin(String u, String p){
            //validate login
            //...
            //...
            return true;
        }
     }

这是我试图调用模拟的测试类：

import static org.junit.Assert.assertEquals;
import static org.powermock.api.easymock.PowerMock.createPartialMock;
import static org.powermock.api.easymock.PowerMock.expectPrivate;
import static org.powermock.api.easymock.PowerMock.replay;
import static org.powermock.api.easymock.PowerMock.verify;
import static org.mockito.Matchers.anyString;
import org.easymock.EasyMock;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
import org.powermock.reflect.Whitebox;
@RunWith(PowerMockRunner.class)
@PrepareForTest(N.class)
public class NodeAccessorTest {
private String username = "admin";
private String password = "asdf";
@Test
public void testMockLogin() throws Exception {
    N n = createPartialMock(N.class,
            "doLogin", String.class, String.class);
    boolean expected = true;
    expectPrivate(n, "doLogin", anyString(), anyString()).andReturn(expected);
    replay(n);
    boolean actual = n.login("A", "B");
    verify(n);
    assertEquals("Expected and actual did not match", expected, actual);
   }
}

这是故障跟踪：

java.lang.AssertionError: 
  Unexpected method call N.doLogin("A", "B"):
    N.doLogin("", ""): expected: 1, actual: 0
    at org.easymock.internal.MockInvocationHandler.invoke(MockInvocationHandler.java:44)
    at org.powermock.api.easymock.internal.invocationcontrol.EasyMockMethodInvocationControl.invoke(EasyMockMethodInvocationControl.java:91)
    at org.powermock.core.MockGateway.doMethodCall(MockGateway.java:124)
    at org.powermock.core.MockGateway.methodCall(MockGateway.java:185)
    at com.pugmarx.mock.N.doLogin(N.java)
    at com.pugmarx.mock.N.login(N.java:60)

因此，当特定的String S传递给public login()方法时，模拟框架并不高兴，但是当使用anyString时很好。理想情况下，我希望，由于嘲笑了private doLogin的电话，因此情况并非如此。我想念什么？

Answer 1

我也有一个类似的问题，我认为您的问题可以在param传递给PowerMock expectPrivate方法的Matchers anyString()中。

基于您的导入，您使用的是Mockito匹配器而是EasyMock匹配器：org.mockito.Matchers.anyString。

您可以尝试更改下一个匹配器：EasyMock.anyString()

import org.easymock.EasyMock;
...
expectPrivate(n, "doLogin", EasyMock.anyString(), EasyMock.anyString()).andReturn(expected);

希望它有帮助。