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，当Google Play服务更新为新版本时，此工作正常。我收到这个错误：

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类，调用GooglePlayServicesUtil给出NullPointerException。有没有人见过这个？

我甚至不在测试中使用Google Play服务。

Answer 1

我已经添加了下一个解决方法，它运行正常：

将所有 PlayServices＆＃39; 相关代码解压缩到Utility类（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Utility类实现阴影：

@Implements(PlayServicesUtils.class)
public class ShadowPlayServicesUtils {

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

为您的测试类（或基类测试类）添加阴影：

@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();
    }
}

原始回答：

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

只需强制成功初始化Google Play服务：

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

编辑：

但播放服务8.3和8.4还有另一个issue。这个问题仍然没有解决。

Robolectric与新版Google Play服务的问题

1 个答案: