Implement updates all properties in updateCustomer mutation

app/code/Magento/CustomerGraphQl/Model/Customer/UpdateCustomerData.php

@@ -13,6 +13,10 @@
 use Magento\Framework\GraphQl\Exception\GraphQlInputException;
 use Magento\Framework\GraphQl\Exception\GraphQlNoSuchEntityException;
 use Magento\Store\Model\StoreManagerInterface;
+use Magento\Customer\Api\Data\CustomerInterface;
+use Magento\Customer\Api\Data\CustomerInterfaceFactory;
+use Magento\Framework\Api\DataObjectHelper;
+use Magento\Framework\Reflection\DataObjectProcessor;
 
 /**
  * Update customer data
@@ -34,19 +38,51 @@ class UpdateCustomerData
      */
     private $checkCustomerPassword;
 
+    /**
+     * @var CustomerInterfaceFactory
+     */
+    private $customerFactory;
+
+    /**
+     * @var DataObjectHelper
+     */
+    private $dataObjectHelper;
+
+    /**
+     * @var DataObjectProcessor
+     */
+    private $dataObjectProcessor;
+
+    /**
+     * @var array
+     */
+    private $restrictedKeys;
+
     /**
      * @param CustomerRepositoryInterface $customerRepository
      * @param StoreManagerInterface $storeManager
      * @param CheckCustomerPassword $checkCustomerPassword
+     * @param CustomerInterfaceFactory $customerFactory
+     * @param DataObjectHelper $dataObjectHelper
+     * @param DataObjectProcessor $dataObjectProcessor
+     * @param array $restrictedKeys
      */
     public function __construct(
         CustomerRepositoryInterface $customerRepository,
         StoreManagerInterface $storeManager,
-        CheckCustomerPassword $checkCustomerPassword
+        CheckCustomerPassword $checkCustomerPassword,
+        CustomerInterfaceFactory $customerFactory,
+        DataObjectHelper $dataObjectHelper,
+        DataObjectProcessor $dataObjectProcessor,
+        array $restrictedKeys = []
     ) {
         $this->customerRepository = $customerRepository;
         $this->storeManager = $storeManager;
         $this->checkCustomerPassword = $checkCustomerPassword;
+        $this->customerFactory = $customerFactory;
+        $this->dataObjectHelper = $dataObjectHelper;
+        $this->dataObjectProcessor = $dataObjectProcessor;
+        $this->restrictedKeys = $restrictedKeys;
     }
 
     /**
@@ -62,14 +98,17 @@ public function __construct(
     public function execute(int $customerId, array $data): void
     {
         $customer = $this->customerRepository->getById($customerId);
+        $newData = array_diff_key($data, array_flip($this->restrictedKeys));
 
-        if (isset($data['firstname'])) {
-            $customer->setFirstname($data['firstname']);
-        }
+        $oldData = $this->dataObjectProcessor->buildOutputDataArray($customer, CustomerInterface::class);
+        $newData = array_merge($oldData, $newData);
 
-        if (isset($data['lastname'])) {
-            $customer->setLastname($data['lastname']);
-        }
+        $customer = $this->customerFactory->create();
+        $this->dataObjectHelper->populateWithArray(
+            $customer,
+            $newData,
+            CustomerInterface::class
+        );
 
         if (isset($data['email']) && $customer->getEmail() !== $data['email']) {
             if (!isset($data['password']) || empty($data['password'])) {

app/code/Magento/CustomerGraphQl/etc/graphql/di.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
+    <type name="Magento\CustomerGraphQl\Model\Customer\UpdateCustomerData">
+        <arguments>
+            <argument name="restrictedKeys" xsi:type="array">
+                <item name="email" xsi:type="const">Magento\Customer\Api\Data\CustomerInterface::EMAIL</item>
+            </argument>
+        </arguments>
+    </type>
+</config>

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

@@ -47,32 +47,54 @@ public function testUpdateCustomer()
         $currentEmail = 'customer@example.com';
         $currentPassword = 'password';
 
+        $newPrefix = 'Dr';
         $newFirstname = 'Richard';
+        $newMiddlename = 'Riley';
         $newLastname = 'Rowe';
+        $newSuffix = 'III';
+        $newDob = '3/11/1972';
+        $newTaxVat = 'GQL1234567';
+        $newGender = 2;
         $newEmail = 'customer_updated@example.com';
 
         $query = <<<QUERY
 mutation {
     updateCustomer(
         input: {
+            prefix: "{$newPrefix}"
             firstname: "{$newFirstname}"
+            middlename: "{$newMiddlename}"
             lastname: "{$newLastname}"
+            suffix: "{$newSuffix}"
+            dob: "{$newDob}"
+            taxvat: "{$newTaxVat}"
             email: "{$newEmail}"
             password: "{$currentPassword}"
         }
     ) {
         customer {
+            prefix
             firstname
+            middlename
             lastname
+            suffix
+            dob
+            taxvat
             email
         }
     }
 }
 QUERY;
         $response = $this->graphQlQuery($query, [], '', $this->getCustomerAuthHeaders($currentEmail, $currentPassword));
 
+        $this->assertEquals($newPrefix, $response['updateCustomer']['customer']['prefix']);
         $this->assertEquals($newFirstname, $response['updateCustomer']['customer']['firstname']);
+        $this->assertEquals($newMiddlename, $response['updateCustomer']['customer']['middlename']);
         $this->assertEquals($newLastname, $response['updateCustomer']['customer']['lastname']);
+        $this->assertEquals($newSuffix, $response['updateCustomer']['customer']['suffix']);
+        $newDobDate = new \DateTime($newDob);
+        $this->assertEquals($newDobDate->format('Y-m-d'), $response['updateCustomer']['customer']['dob']);
+        $this->assertEquals($newTaxVat, $response['updateCustomer']['customer']['taxvat']);
         $this->assertEquals($newEmail, $response['updateCustomer']['customer']['email']);
     }