@Test
public void getBalanceCompletesAndEmitsBalance() {

    stubPreferencesHelperGetAccessToken(TestDataFactory.makeAccessToken());
    Balance balance = TestDataFactory.makeBalance();
    stubMondoServiceGetBalance(Single.just(balance));
    TestSubscriber<Balance> testSubscriber = new TestSubscriber<>();
    mDataManager.getBalance("account_id").subscribe(testSubscriber);
    testSubscriber.assertCompleted();
    testSubscriber.assertValue(balance);
}