MC-38995: Customer group price is not working in product query graphql

Author: Oleksandr Iegorov

app/code/Magento/CustomerGraphQl/Model/Context/AddCustomerGroupToContext.php

@@ -12,7 +12,6 @@
 use Magento\GraphQl\Model\Query\ContextParametersProcessorInterface;
 use Magento\Customer\Model\Group;
 use Magento\Customer\Model\Group\Resolver as CustomerGroupResolver;
-use Magento\Framework\Exception\LocalizedException;
 
 /**
  * @inheritdoc

dev/tests/integration/testsuite/Magento/Customer/Model/Group/ResolverTest.php

@@ -0,0 +1,26 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\Customer\Model\Group;
+
+use PHPUnit\Framework\TestCase;
+use Magento\TestFramework\Helper\Bootstrap;
+
+class ResolverTest extends TestCase
+{
+    /**
+     * @magentoDataFixture Magento/Customer/_files/customer.php
+     */
+    public function testResolve()
+    {
+        $customerId = 1;
+        $expectedGroupId = 1;
+
+        $resolver = Bootstrap::getObjectManager()->create(Resolver::class);
+        $groupId = $resolver->resolve($customerId);
+        $this->assertEquals($groupId, $expectedGroupId);
+    }
+}