<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
declare(strict_types=1);

namespace Magento\Framework\Json\Test\Unit\Helper;

use Magento\Framework\Json\DecoderInterface;
use Magento\Framework\Json\EncoderInterface;
use Magento\Framework\Json\Helper\Data;
use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
use PHPUnit\Framework\MockObject\MockObject;
use PHPUnit\Framework\TestCase;

class DataTest extends TestCase
{
/**
* @var Data
*/
protected $helper;

/** @var EncoderInterface|MockObject */
protected $jsonEncoderMock;

/** @var DecoderInterface|MockObject */
protected $jsonDecoderMock;

protected function setUp(): void
{
$objectManager = new ObjectManager($this);
$this->jsonEncoderMock = $this->getMockBuilder(EncoderInterface::class)
->disableOriginalConstructor()
->getMockForAbstractClass();
$this->jsonDecoderMock = $this->getMockBuilder(DecoderInterface::class)
->disableOriginalConstructor()
->getMockForAbstractClass();
$this->helper = $objectManager->getObject(
Data::class,
[
'jsonEncoder' => $this->jsonEncoderMock,
'jsonDecoder' => $this->jsonDecoderMock,
]
);
}

public function testJsonEncode()
{
$expected = '"valueToEncode"';
$valueToEncode = 'valueToEncode';
$this->jsonEncoderMock->expects($this->once())
->method('encode')
->willReturn($expected);
$this->assertEquals($expected, $this->helper->jsonEncode($valueToEncode));
}

public function testJsonDecode()
{
$expected = '"valueToDecode"';
$valueToDecode = 'valueToDecode';
$this->jsonDecoderMock->expects($this->once())
->method('decode')
->willReturn($expected);
$this->assertEquals($expected, $this->helper->jsonDecode($valueToDecode));
}
}