tests/unit/src/com/android/bluetooth/avrcp/AvrcpTest.java

package com.android.bluetooth.avrcp;

import static org.mockito.Mockito.*;

import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.pm.ServiceInfo;
import android.media.AudioManager;
import android.os.Looper;
import android.support.test.InstrumentationRegistry;
import android.support.test.filters.MediumTest;
import android.support.test.runner.AndroidJUnit4;

import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;

import java.util.ArrayList;
import java.util.List;


/**
 * Unit tests for {@link Avrcp}
 */
@MediumTest
@RunWith(AndroidJUnit4.class)
public class AvrcpTest {
    @Test
    public void testCanStart() {
        if (Looper.myLooper() == null) {
            Looper.prepare();
        }

        Avrcp a = Avrcp.make(InstrumentationRegistry.getTargetContext());
    }

    @Test
    public void testFailedBrowseStart() {
        if (Looper.myLooper() == null) {
            Looper.prepare();
        }

        Context mockContext = mock(Context.class);
        AudioManager mockAudioManager = mock(AudioManager.class);
        PackageManager mockPackageManager = mock(PackageManager.class);

        when(mockAudioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC)).thenReturn(100);

        when(mockContext.getSystemService(Context.AUDIO_SERVICE)).thenReturn(mockAudioManager);

        when(mockContext.getApplicationContext()).thenReturn(mockContext);
        when(mockContext.getPackageManager()).thenReturn(mockPackageManager);


        // Call to get the BrowsableMediaPlayers
        // We must return at least one to try to startService
        List<ResolveInfo> resInfos = new ArrayList<ResolveInfo>();

        ServiceInfo fakeService = new ServiceInfo();
        fakeService.name = ".browse.MediaBrowserService";
        fakeService.packageName = "com.test.android.fake";

        ResolveInfo fakePackage = new ResolveInfo();
        fakePackage.serviceInfo = fakeService;
        fakePackage.nonLocalizedLabel = "Fake Package";
        resInfos.add(fakePackage);
        when(mockPackageManager.queryIntentServices(isA(Intent.class), anyInt())).thenReturn(
                resInfos);

        when(mockContext.startService(isA(Intent.class))).thenThrow(new SecurityException("test"));

        // Make calls start() which calls buildMediaPlayersList() which should
        // try to start the service?
        try {
            Avrcp a = Avrcp.make(mockContext);
        } catch (SecurityException e) {
            Assert.fail(
                    "Threw SecurityException instead of protecting against it: " + e.toString());
        }
    }
}