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dev/tests/api-functional/_files/Magento/TestModuleUps/Model/MockResponseBodyLoader.php

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+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\TestModuleUps\Model;
+
+use Magento\Framework\Exception\NotFoundException;
+use Magento\Framework\Module\Dir;
+use Magento\Framework\Filesystem\Io\File;
+
+/**
+ * Load mock response body for UPS rate request
+ */
+class MockResponseBodyLoader
+{
+    private const RESPONSE_FILE_PATTERN = '%s/_files/mock_response_%s.txt';
+
+    /**
+     * @var Dir
+     */
+    private $moduleDirectory;
+
+    /**
+     * @var File
+     */
+    private $fileIo;
+
+    /**
+     * @param Dir $moduleDirectory
+     * @param File $fileIo
+     */
+    public function __construct(
+        Dir $moduleDirectory,
+        File $fileIo
+    ) {
+        $this->moduleDirectory = $moduleDirectory;
+        $this->fileIo = $fileIo;
+    }
+
+    /**
+     * Loads mock cgi response body for a given country
+     *
+     * @param string $country
+     * @return string
+     * @throws NotFoundException
+     */
+    public function loadForRequest(string $country): string
+    {
+        $country = strtolower($country);
+        $moduleDir = $this->moduleDirectory->getDir('Magento_TestModuleUps');
+
+        $responsePath = sprintf(static::RESPONSE_FILE_PATTERN, $moduleDir, $country);
+
+        if (!$this->fileIo->fileExists($responsePath)) {
+            throw new NotFoundException(__('%1 is not a valid destination country.', $country));
+        }
+
+        return $this->fileIo->read($responsePath);
+    }
+}