ENGCOM-6062: Cover exceptions in \Magento\CustomerGraphQl\Model\Resolver\CreateCustomerAddress #1001

 - Merge Pull Request magento/graphql-ce#1001 from TomashKhamlai/graphql-ce:coverage-create-customer-address-input
 - Merged commits:
   1. f1e8568

Author: magento-engcom-team

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

@@ -202,6 +202,27 @@ public function testCreateCustomerAddressWithMissingAttribute()
         $this->graphQlMutation($mutation, [], '', $this->getCustomerAuthHeaders($userName, $password));
     }
 
+    /**
+     * @magentoApiDataFixture Magento/Customer/_files/customer_without_addresses.php
+     * @expectedException Exception
+     * @expectedExceptionMessage "input" value should be specified
+     */
+    public function testCreateCustomerAddressWithMissingInput()
+    {
+        $userName = 'customer@example.com';
+        $password = 'password';
+        $mutation = <<<MUTATION
+mutation {
+  createCustomerAddress(
+    input: {}
+  ) {
+    city
+  }
+}
+MUTATION;
+        $this->graphQlMutation($mutation, [], '', $this->getCustomerAuthHeaders($userName, $password));
+    }
+
     /**
      * @magentoApiDataFixture Magento/Customer/_files/customer_without_addresses.php
      * @SuppressWarnings(PHPMD.ExcessiveMethodLength)