newsupernova/dev/tests/integration/testsuite/Magento/Checkout/_files/ValidatorFileMock.php

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Checkout\_files;

use Magento\Catalog\Model\Product\Option\Type\File\ValidatorFile;

/**
 * Creates mock for ValidatorFile to replace real instance in fixtures.
 */
class ValidatorFileMock extends \PHPUnit\Framework\TestCase
{
    /**
     * Returns mock.
     *
     * @return ValidatorFile|\PHPUnit_Framework_MockObject_MockObject
     */
    public function getInstance()
    {
        $userValue = [
            'type' => 'image/jpeg',
            'title' => "test.jpg",
            'quote_path' => "custom_options/quote/s/t/4624d2.jpg",
            'order_path' => "custom_options/order/s/t/89d25b4624d2.jpg",
            "fullpath" => "pub/media/custom_options/quote/s/t/e47389d25b4624d2.jpg",
            "size"=> "71901",
            "width" => 5,
            "height" => 5,
            "secret_key" => "10839ec1631b77e5e473",
        ];
        $instance = $this->getMockBuilder(ValidatorFile::class)
            ->disableOriginalConstructor()
            ->getMock();
        $instance->method('SetProduct')->willReturnSelf();
        $instance->method('validate')->willReturn($userValue);

        return $instance;
    }
}