如何使凌空onResponse在UnitTest线程中运行

Question

i'm making unit test for my application my unit test class has this method

@Before
public void initialize() {
    mContext = InstrumentationRegistry.getTargetContext();
    RealmConfiguration realmConfiguration = new RealmConfiguration.Builder(mContext).name("realmTest").inMemory().build();
    Realm.setDefaultConfiguration(realmConfiguration);
    mWorkoutsModel = new WorkoutsModel(mContext);
    mRealm = Realm.getInstance(realmConfiguration);
    mWorkoutsModel.registerListener(this);
}

@Test
public void getWorkouts() throws Exception {
    mWorkoutsModel.onStart();

    mLock.await();
    mWorkoutsModel.onStop();

}

@After
public void deInitialize() {
    mWorkoutsModel.unRegisterListener();
    mRealm.close();
}

and my model

@Override
public void onStart() {

    mRealm = Realm.getDefaultInstance();
        getDataFromApi();
}

private boolean getDataFromApi() {
    Constants.AllAPIs.ALLWorkouts allWorkouts = new Constants.AllAPIs.ALLWorkouts();
    if (Permissions.isInternetConnectionExist(mContext)) {
        mApiHandler.downLoadDataFromApi(AllWorkouts.class, allWorkouts.getBaseUrl(),
                new APIHandler.StringResponseHandler<AllWorkouts>() {
                    @Override
                    public void onResponse(AllWorkouts response) {
                            insertWorkouts(response.getWorkouts());
                },
                new APIHandler.ErrorResponseHandler() {
                    @Override
                    public void onErrorResponse(VolleyError error) {

                    }
                }, TAG);

        return true;
    } else {
        return false;
    }
}
private void insertWorkouts(final List<Workout> workouts) {
    mCurrentInsertTransaction = mRealm.executeTransactionAsync(new Realm.Transaction() {
        @Override
        public void execute(Realm bgRealm) {
            bgRealm.copyToRealmOrUpdate(workouts);
        }
    }, new Realm.Transaction.OnSuccess() {
        @Override
        public void onSuccess() {
        }
    });
}

my problem that the unittest calls onStart which create realm object in the model in test thread but volley force onResponse to run on UIThread which makes realm throw exception Realm access from incorrect thread. Realm objects can only be accessed on the thread they were created. Realm access from incorrect thread. Realm objects can only be accessed on the thread they were created.

the code runs perfect in normal, but in test it fails

does anyone faced same problem or can solve it ?

Answer 1

i solved my problem by run the test in handler

new Handler(mContext.getMainLooper()).post(new Runnable() {
        @Override
        public void run() {
            try {
                mWorkoutsModel.onStart();
                mLock.await();
                mWorkoutsModel.onStop();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    });

hope that help somebody