magento/graphql-ce#662: Test coverage of USPS shipping method

Author: lenaorobei

dev/tests/api-functional/testsuite/Magento/GraphQl/Usps/SetUspsShippingMethodsOnCartTest.php

@@ -68,6 +68,10 @@ class SetUspsShippingMethodsOnCartTest extends GraphQlAbstract
      */
     protected function setUp()
     {
+        $this->markTestSkipped(
+            'Need to implement mock instead of real carrier service call ' .
+            'https://github.com/magento/graphql-ce/issues/739'
+        );
         $objectManager = Bootstrap::getObjectManager();
         $this->customerTokenService = $objectManager->get(CustomerTokenServiceInterface::class);
         $this->getMaskedQuoteIdByReservedOrderId = $objectManager->get(GetMaskedQuoteIdByReservedOrderId::class);