ENGCOM-4487: 429 - Test coverage: nonExistentCart #444

 - Merge Pull Request magento/graphql-ce#444 from magento/graphql-ce:429-test-coverage-nonExistentCart
 - Merged commits:
   1. 990a373
   2. 4550597
   3. 350d1f8

Author: magento-engcom-team

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

@@ -403,6 +403,26 @@ public function testSetBillingAddressIfCustomerIsNotOwnerOfAddress()
         $this->graphQlQuery($query, [], '', $this->getHeaderMap('[email protected]'));
     }
 
+    /**
+     * @magentoApiDataFixture Magento/Customer/_files/customer.php
+     * @expectedException \Exception
+     * @expectedExceptionMessage Could not find a cart with ID "non_existent_masked_id"
+     */
+    public function testSetBillingAddressOnNonExistentCart()
+    {
+        $maskedQuoteId = 'non_existent_masked_id';
+        $query = <<<QUERY
+{
+  cart(cart_id: "$maskedQuoteId") {
+    items {
+      id
+    }
+  }
+}
+QUERY;
+        $this->graphQlQuery($query, [], '', $this->getHeaderMap());
+    }
+
     /**
      * Verify the all the whitelisted fields for a New Address Object
      *

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

@@ -151,6 +151,26 @@ public function testSetPaymentMethodToAnotherCustomerCart()
         $this->graphQlQuery($query, [], '', $this->getHeaderMap('[email protected]'));
     }
 
+    /**
+     * @magentoApiDataFixture Magento/Customer/_files/customer.php
+     * @expectedException \Exception
+     * @expectedExceptionMessage Could not find a cart with ID "non_existent_masked_id"
+     */
+    public function testPaymentMethodOnNonExistentCart()
+    {
+        $maskedQuoteId = 'non_existent_masked_id';
+        $query = <<<QUERY
+{
+  cart(cart_id: "$maskedQuoteId") {
+    items {
+      id
+    }
+  }
+}
+QUERY;
+        $this->graphQlQuery($query, [], '', $this->getHeaderMap());
+    }
+
     /**
      * @param string $maskedQuoteId
      * @param string $methodCode

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

@@ -244,6 +244,25 @@ public function testSetBillingAddressFromAddressBook()
         $this->graphQlQuery($query);
     }
 
+    /**
+     * @expectedException \Exception
+     * @expectedExceptionMessage Could not find a cart with ID "non_existent_masked_id"
+     */
+    public function testSetBillingAddressOnNonExistentCart()
+    {
+        $maskedQuoteId = 'non_existent_masked_id';
+        $query = <<<QUERY
+{
+  cart(cart_id: "$maskedQuoteId") {
+    items {
+      id
+    }
+  }
+}
+QUERY;
+        $this->graphQlQuery($query);
+    }
+
     /**
      * Verify the all the whitelisted fields for a New Address Object
      *

dev/tests/api-functional/testsuite/Magento/GraphQl/Quote/Guest/SetPaymentMethodOnCartTest.php

@@ -126,6 +126,25 @@ public function testSetPaymentMethodToCustomerCart()
         $this->graphQlQuery($query);
     }
 
+    /**
+     * @expectedException \Exception
+     * @expectedExceptionMessage Could not find a cart with ID "non_existent_masked_id"
+     */
+    public function testSetPaymentOnNonExistentCart()
+    {
+        $maskedQuoteId = 'non_existent_masked_id';
+        $query = <<<QUERY
+{
+  cart(cart_id: "$maskedQuoteId") {
+    items {
+      id
+    }
+  }
+}
+QUERY;
+        $this->graphQlQuery($query);
+    }
+
     /**
      * @param string $maskedQuoteId
      * @param string $methodCode