@Test public void shouldFailPurchaseWhenBillingUnsupported() throws Exception {

    shouldStartSetup_ServiceDoesNotSupportBilling();
    helper.launchPurchaseFlow(null, "sku", INAPP, TEST_REQUEST_CODE, purchaseFinishedListener, "");
    verify(purchaseFinishedListener).onIabPurchaseFinished(
            new IabResult(BILLING_UNAVAILABLE),
            null);
}