ENGCOM-7664: magento/magento2#: GraphQl. setPaymentMethodAndPlaceOrder. Remove redundant logic. #28506

 - Merge Pull Request #28506 from atwixfirster/magento2:graphql-setPaymentMethodAndPlaceOrder-remove-redundant-logic
 - Merged commits:
   1. 516f992
   2. d7681b6
   3. 4edf42e

Author: magento-engcom-team

app/code/Magento/QuoteGraphQl/Model/Resolver/SetPaymentAndPlaceOrder.php

@@ -71,14 +71,15 @@ public function __construct(
      */
     public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
     {
-        if (!isset($args['input']['cart_id']) || empty($args['input']['cart_id'])) {
+        if (empty($args['input']['cart_id'])) {
             throw new GraphQlInputException(__('Required parameter "cart_id" is missing'));
         }
-        $maskedCartId = $args['input']['cart_id'];
 
-        if (!isset($args['input']['payment_method']['code']) || empty($args['input']['payment_method']['code'])) {
+        if (empty($args['input']['payment_method']['code'])) {
             throw new GraphQlInputException(__('Required parameter "code" for "payment_method" is missing.'));
         }
+
+        $maskedCartId = $args['input']['cart_id'];
         $paymentData = $args['input']['payment_method'];
 
         $storeId = (int)$context->getExtensionAttributes()->getStore()->getId();

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

@@ -281,6 +281,50 @@ public function testSetDisabledPaymentOnCart()
         $this->graphQlMutation($query, [], '', $this->getHeaderMap());
     }
 
+    /**
+     * @magentoApiDataFixture Magento/Customer/_files/customer.php
+     * @magentoApiDataFixture Magento/GraphQl/Catalog/_files/simple_product.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/customer/create_empty_cart.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/add_simple_product.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/set_new_billing_address.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/set_new_shipping_address.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/set_flatrate_shipping_method.php
+     */
+    public function testPlaceOrderWitMissingCartId()
+    {
+        $methodCode = Checkmo::PAYMENT_METHOD_CHECKMO_CODE;
+        $maskedQuoteId = "";
+
+        $query = $this->getQuery($maskedQuoteId, $methodCode);
+
+        $this->expectExceptionMessage(
+            "Required parameter \"cart_id\" is missing"
+        );
+        $this->graphQlMutation($query);
+    }
+
+    /**
+     * @magentoApiDataFixture Magento/Customer/_files/customer.php
+     * @magentoApiDataFixture Magento/GraphQl/Catalog/_files/simple_product.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/customer/create_empty_cart.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/add_simple_product.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/set_new_billing_address.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/set_new_shipping_address.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/set_flatrate_shipping_method.php
+     */
+    public function testPlaceOrderWithMissingPaymentMethod()
+    {
+        $methodCode = "";
+        $maskedQuoteId = $this->getMaskedQuoteIdByReservedOrderId->execute('test_quote');
+
+        $query = $this->getQuery($maskedQuoteId, $methodCode);
+
+        $this->expectExceptionMessage(
+            "Required parameter \"code\" for \"payment_method\" is missing."
+        );
+        $this->graphQlMutation($query);
+    }
+
     /**
      * @param string $maskedQuoteId
      * @param string $methodCode

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

@@ -218,6 +218,50 @@ public function testSetDisabledPaymentOnCart()
         $this->graphQlMutation($query);
     }
 
+    /**
+     * @magentoApiDataFixture Magento/GraphQl/Catalog/_files/simple_product.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/guest/create_empty_cart.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/guest/set_guest_email.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/add_simple_product.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/set_new_shipping_address.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/set_new_billing_address.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/set_flatrate_shipping_method.php
+     */
+    public function testPlaceOrderWitMissingCartId()
+    {
+        $methodCode = Checkmo::PAYMENT_METHOD_CHECKMO_CODE;
+        $maskedQuoteId = "";
+
+        $query = $this->getQuery($maskedQuoteId, $methodCode);
+
+        $this->expectExceptionMessage(
+            "Required parameter \"cart_id\" is missing"
+        );
+        $this->graphQlMutation($query);
+    }
+
+    /**
+     * @magentoApiDataFixture Magento/GraphQl/Catalog/_files/simple_product.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/guest/create_empty_cart.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/guest/set_guest_email.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/add_simple_product.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/set_new_shipping_address.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/set_new_billing_address.php
+     * @magentoApiDataFixture Magento/GraphQl/Quote/_files/set_flatrate_shipping_method.php
+     */
+    public function testPlaceOrderWithMissingPaymentMethod()
+    {
+        $methodCode = "";
+        $maskedQuoteId = $this->getMaskedQuoteIdByReservedOrderId->execute('test_quote');
+
+        $query = $this->getQuery($maskedQuoteId, $methodCode);
+
+        $this->expectExceptionMessage(
+            "Required parameter \"code\" for \"payment_method\" is missing."
+        );
+        $this->graphQlMutation($query);
+    }
+
     /**
      * @param string $maskedQuoteId
      * @param string $methodCode