magento/graphql-ce#977: [Test coverage] Cover exceptions in AssignShippingAddressToCart, AssignBillingAddressToCart

Author: lenaorobei

dev/tests/api-functional/testsuite/Magento/GraphQl/Quote/Customer/SetBillingAddressOnCartTest.php

@@ -928,7 +928,7 @@ public function testWithInvalidBillingAddressInput()
   }
 }
 QUERY;
-        self::expectExceptionMessage('The address failed to save. Verify the address and try again.');
+        $this->expectExceptionMessage('The address failed to save. Verify the address and try again.');
         $this->graphQlMutation($query, [], '', $this->getHeaderMap());
     }
 

dev/tests/api-functional/testsuite/Magento/GraphQl/Quote/Customer/SetShippingAddressOnCartTest.php

@@ -748,7 +748,7 @@ public function testWithInvalidShippingAddressesInput()
   }
 }
 QUERY;
-        self::expectExceptionMessage('The address failed to save. Verify the address and try again.');
+        $this->expectExceptionMessage('The address failed to save. Verify the address and try again.');
         $this->graphQlMutation($query, [], '', $this->getHeaderMap());
     }
 
@@ -894,7 +894,6 @@ public function testSetNewShippingAddressWithNotSaveInAddressBook()
         }
     }
 
-
     /**
      * Verify the all the whitelisted fields for a New Address Object
      *