Mockito 和 Dexmaker 的 UnsupportedOperationException

UnsupportedOperationException with Mockito and Dexmaker

最近我一直在为 Mockito 苦苦挣扎。但是经过不懈的努力,我让它编译没有错误,除了这个在特定情况下的错误:

当我使用 Mockito 模拟包私有 class 时,在同一个包中进行测试时,出现以下错误:

java.lang.UnsupportedOperationException: cannot proxy inaccessible class class [...].AndroidCalendarGenerator.ManageEventsUI.CalendarMonitorServiceConnection
    at com.android.dx.stock.ProxyBuilder.buildProxyClass(ProxyBuilder.java:269)
    at com.android.dx.mockito.DexmakerMockMaker.createMock(DexmakerMockMaker.java:56)
    at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:33)
    at org.mockito.internal.MockitoCore.mock(MockitoCore.java:59)
    at org.mockito.Mockito.mock(Mockito.java:1285)
    at org.mockito.Mockito.mock(Mockito.java:1163)
    [...]

这是我的 class :

package [...].AndroidCalendarGenerator.ManageEventsUI;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.runners.MockitoJUnitRunner;

import static org.mockito.Mockito.mock;

@RunWith(MockitoJUnitRunner.class)
public class CalendarMonitorServiceConnectionTest {

    @Test
    public void testOne() {
        CalendarMonitorServiceConnection c1 = new CalendarMonitorServiceConnection(null);
        CalendarMonitorServiceConnection c = mock(CalendarMonitorServiceConnection.class);
    }
}

我认为测试编译的第一行没有错误意味着这个测试与我尝试模拟的 CalendarMonitorServiceConnection class 在同一个文件夹中。

最后,我的 build.gradle 中有了这些导入:

androidTestCompile 'junit:junit:4.12'
androidTestCompile 'org.mockito:mockito-core:1.10.19'
androidTestCompile "com.crittercism.dexmaker:dexmaker:1.4"
androidTestCompile "com.crittercism.dexmaker:dexmaker-mockito:1.4"
androidTestCompile "com.crittercism.dexmaker:dexmaker-dx:1.4"

我错过了什么?

非常感谢您的回答


编辑

这是我尝试模拟的 class 的代码:

package [...].AndroidCalendarGenerator.ManageEventsUI;

import android.content.ComponentName;
import android.content.ServiceConnection;
import android.os.IBinder;

import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;

import [...].AndroidCalendarGenerator.CalendarEventMonitor;
import [...].AndroidCalendarGenerator.Event;
import [...].AndroidCalendarGenerator.EventChangeListener;

class CalendarMonitorServiceConnection implements ServiceConnection {

    private CalendarEventMonitor mMonitor;
    private EventListViewAdapter mEventListViewAdapter;

    CalendarMonitorServiceConnection(EventListViewAdapter eventListViewAdapter) {
        mEventListViewAdapter = eventListViewAdapter;
    }

    /**
     * Custom event change listener that defines what to do in case of changes in the calendar
     */
    private class CustomEventChangeListener implements EventChangeListener {
        @Override
        public void onEventActivated(Event event) {
            //[...]
        }

        @Override
        public void onEventRemoved(Event event) {
            //[...]
        }

        @Override
        public void onEventListChanged() {
            //[...]
        }
    }

    /**
     * Pulls data for next 30 days and send it to the adapter
     */
    private void sendNextThirtyDaysEventsToAdapter() {
        //[...]
    }

    @Override
    public void onServiceConnected(ComponentName className,
                                   IBinder service){
        //[...]
    }

    @Override
    public void onServiceDisconnected(ComponentName arg0){
        //[...]
    }
}

经过一些研究,在我看来:

  • Mockito + Dexmaker 无法模拟包私有 class,即使单元测试在同一个包中。
  • Powermock 可以模拟包私有 class,但前提是单元测试在同一个包中。

因此,解决方案是使用 Powermock,因为我想保持我的 class 包私有。

主要来源:


我会在试用 Powemock 时更新 post。 或者,如果有人可以同意或更正我的回答