LYNX-175: Add a query to know if cancellation is enabled / disabled (#140)

Author: loginesta

app/code/Magento/OrderCancellationGraphQl/README.md

@@ -0,0 +1,4 @@
+# Magento_OrderCancellationGraphQl module
+
+The **OrderCancellationGraphQl** module provides a GraphQl endpoint
+to cancel an order and specify the order cancellation reason.

app/code/Magento/OrderCancellationGraphQl/composer.json

@@ -0,0 +1,24 @@
+{
+    "name": "magento/module-order-cancellation-graph-ql",
+    "description": "N/A",
+    "config": {
+        "sort-packages": true
+    },
+    "require": {
+        "php": "~8.1.0||~8.2.0",
+        "magento/framework": "*"
+    },
+    "type": "magento2-module",
+    "license": [
+        "OSL-3.0",
+        "AFL-3.0"
+    ],
+    "autoload": {
+        "files": [
+            "registration.php"
+        ],
+        "psr-4": {
+            "Magento\\OrderCancellationGraphQl\\": ""
+        }
+    }
+}

app/code/Magento/OrderCancellationGraphQl/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\StoreGraphQl\Model\Resolver\Store\StoreConfigDataProvider">
+        <arguments>
+            <argument name="extendedConfigData" xsi:type="array">
+                <item name="order_cancellation_enabled" xsi:type="string">sales/cancellation/enabled</item>
+            </argument>
+        </arguments>
+    </type>
+</config>

app/code/Magento/OrderCancellationGraphQl/etc/module.xml

@@ -0,0 +1,10 @@
+<?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:Module/etc/module.xsd">
+    <module name="Magento_OrderCancellationGraphQl"/>
+</config>

app/code/Magento/OrderCancellationGraphQl/etc/schema.graphqls

@@ -0,0 +1,5 @@
+# Copyright © Magento, Inc. All rights reserved.
+# See COPYING.txt for license details.
+type StoreConfig {
+    order_cancellation_enabled: Boolean @doc(description: "Indicates whether orders can be cancelled by customers or not.")
+}

app/code/Magento/OrderCancellationGraphQl/registration.php

@@ -0,0 +1,11 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+declare(strict_types=1);
+
+use Magento\Framework\Component\ComponentRegistrar;
+
+ComponentRegistrar::register(ComponentRegistrar::MODULE, 'Magento_OrderCancellationGraphQl', __DIR__);

composer.json

@@ -252,6 +252,7 @@
         "magento/module-offline-payments": "*",
         "magento/module-offline-shipping": "*",
         "magento/module-order-cancellation": "*",
+        "magento/module-order-cancellation-graph-ql": "*",
         "magento/module-page-cache": "*",
         "magento/module-payment": "*",
         "magento/module-payment-graph-ql": "*",

dev/tests/api-functional/testsuite/Magento/GraphQl/OrderCancellation/OrderCancellationEnabledTest.php

@@ -0,0 +1,53 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\GraphQl\OrderCancellation;
+
+use Magento\Store\Test\Fixture\Store;
+use Magento\TestFramework\Fixture\DataFixture;
+use Magento\TestFramework\Fixture\Config;
+use Magento\TestFramework\TestCase\GraphQlAbstract;
+
+/**
+ * Test coverage for order cancellation settings in the store config
+ */
+#[
+    DataFixture(Store::class)
+]
+class OrderCancellationEnabledTest extends GraphQlAbstract
+{
+    private const STORE_CONFIG_QUERY = <<<QUERY
+{
+    storeConfig {
+        code
+        order_cancellation_enabled
+    }
+}
+QUERY;
+
+    #[
+        Config('sales/cancellation/enabled', 1)
+    ]
+    public function testOrderCancellationEnabledConfig()
+    {
+        $response = $this->graphQlQuery(self::STORE_CONFIG_QUERY);
+
+        self::assertArrayHasKey('order_cancellation_enabled', $response['storeConfig']);
+        self::assertEquals(true, $response['storeConfig']['order_cancellation_enabled']);
+    }
+
+    #[
+        Config('sales/cancellation/enabled', 0)
+    ]
+    public function testOrderCancellationDisabledConfig()
+    {
+        $response = $this->graphQlQuery(self::STORE_CONFIG_QUERY);
+
+        self::assertArrayHasKey('order_cancellation_enabled', $response['storeConfig']);
+        self::assertEquals(false, $response['storeConfig']['order_cancellation_enabled']);
+    }
+}