<?php
/**
 * Copyright © 2016 Magento. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Framework\App\Test\Unit\Config;

class MetadataProcessorTest extends \PHPUnit_Framework_TestCase
{
    /**
     * @var \Magento\Framework\App\Config\MetadataProcessor
     */
    protected $_model;

    /**
     * @var \PHPUnit_Framework_MockObject_MockObject
     */
    protected $_initialConfigMock;

    /**
     * @var \PHPUnit_Framework_MockObject_MockObject
     */
    protected $_modelPoolMock;

    /**
     * @var \PHPUnit_Framework_MockObject_MockObject
     */
    protected $_backendModelMock;

    protected function setUp()
    {
        $this->_modelPoolMock = $this->getMock(
            'Magento\Framework\App\Config\Data\ProcessorFactory',
            [],
            [],
            '',
            false
        );
        $this->_initialConfigMock = $this->getMock('Magento\Framework\App\Config\Initial', [], [], '', false);
        $this->_backendModelMock = $this->getMock('Magento\Framework\App\Config\Data\ProcessorInterface');
        $this->_initialConfigMock->expects(
            $this->any()
        )->method(
            'getMetadata'
        )->will(
            $this->returnValue(['some/config/path' => ['backendModel' => 'Custom_Backend_Model']])
        );
        $this->_model = new \Magento\Framework\App\Config\MetadataProcessor(
            $this->_modelPoolMock,
            $this->_initialConfigMock
        );
    }

    public function testProcess()
    {
        $this->_modelPoolMock->expects(
            $this->once()
        )->method(
            'get'
        )->with(
            'Custom_Backend_Model'
        )->will(
            $this->returnValue($this->_backendModelMock)
        );
        $this->_backendModelMock->expects(
            $this->once()
        )->method(
            'processValue'
        )->with(
            'value'
        )->will(
            $this->returnValue('processed_value')
        );
        $data = ['some' => ['config' => ['path' => 'value']], 'active' => 1];
        $expectedResult = $data;
        $expectedResult['some']['config']['path'] = 'processed_value';
        $this->assertEquals($expectedResult, $this->_model->process($data));
    }
}