Robolectric 新版本 Google Play 服务出现问题

Question

我使用 Robolectric 进行单元测试，我的项目中有 Google Play 服务。直到昨天 Google Play Services 更新到新版本时，它才正常工作。我收到此错误：

java.lang.NullPointerException
at com.google.android.gms.common.GooglePlayServicesUtil.zzh(Unknown Source)
at com.google.android.gms.common.GooglePlayServicesUtil.zzd(Unknown Source)
at com.google.android.gms.common.GoogleApiAvailability.isGooglePlayServicesAvailable(Unknown Source)
at com.google.android.gms.common.api.zzg$zze.zznn(Unknown Source)
at com.google.android.gms.common.api.zzg$zzi.run(Unknown Source)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

Process finished with exit code 255

似乎没有调用 Shadow class，GooglePlayServicesUtil 被调用并给出了 NullPointerException。有人看过吗？

我什至不在测试中使用 Google Play 服务。

Answer 1

我已经添加了下一个解决方法，它工作正常：

将所有 PlayServices' 相关代码提取到实用程序 class（在我的例子中，它只是可用性检查）：

public class PlayServicesUtils {

    private static final int PLAY_SERVICES_RESOLUTION_REQUEST = 9000;

    public static final int AVAILABLE = 1;
    public static final int ERROR_RESOLVABLE = 2;
    public static final int ERROR_UNRESOLVABLE = 3;

    @IntDef({AVAILABLE, ERROR_RESOLVABLE, ERROR_UNRESOLVABLE})
    @Retention(RetentionPolicy.SOURCE)
    public @interface PlayServicesAvailability {
    }

    @PlayServicesAvailability
    public static int checkPlayServices(@NonNull Activity activity) {
        GoogleApiAvailability apiAvailability = GoogleApiAvailability.getInstance();
        int resultCode = apiAvailability.isGooglePlayServicesAvailable(activity);
        if (resultCode != ConnectionResult.SUCCESS) {
            if (apiAvailability.isUserResolvableError(resultCode)) {
                apiAvailability.getErrorDialog(activity, resultCode, PLAY_SERVICES_RESOLUTION_REQUEST).show();
                return PlayServicesUtils.ERROR_RESOLVABLE;
            } else {
                CLog.e(Constants.TAG, "This device does not support Google Play services.");
                return PlayServicesUtils.ERROR_UNRESOLVABLE;
            }
        }
        return PlayServicesUtils.AVAILABLE;
    }
}

为此实用程序实施影子 class:

@Implements(PlayServicesUtils.class)
public class ShadowPlayServicesUtils {

    @Implementation
    @PlayServicesUtils.PlayServicesAvailability
    public static int checkPlayServices(@NonNull Activity activity) {
        return PlayServicesUtils.AVAILABLE;
    }
}

将阴影添加到您的测试 class（或添加到基础级别测试 class）：

@Ignore
@RunWith(TestRunner.class)
@Config(
        sdk = 18,
        constants = BuildConfig.class,
        shadows = {
                ShadowPlayServicesUtils.class
        }
)
public abstract class BaseTest {
    // some code, maybe 
}

将您的影子添加到 TestRunner 的 InstrumentationConfiguration 创建中：

public class TestRunner extends RobolectricGradleTestRunner {
    public TestRunner(Class<?> klass) throws InitializationError {
        super(klass);
    }

    @Override
    public InstrumentationConfiguration createClassLoaderConfig() {
        InstrumentationConfiguration.Builder builder = InstrumentationConfiguration.newBuilder();

        builder.addInstrumentedClass(PlayServicesUtils.class.getName());

        return builder.build();
    }
}

原回答：

我在 Robolectric 问题跟踪器上找到了 similar issue，那里提供了解决方法 - 有效！

只需强制 Google Play 服务初始化成功：

@Before public void setUp() {
    // force success every time
    ShadowGooglePlayServicesUtil.setIsGooglePlayServicesAvailable(ConnectionResult.SUCCESS);
}

编辑：

但还有另一个 issue 与 Play Services 8.3 和 8.4。而且这个问题还没有解决。

Robolectric 新版本 Google Play 服务出现问题

Issue with Robolectric with new version of Google Play services

android

robolectric

google-play-services