MergeServiceTest.php

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<?php
namespace Magento\Framework\View\Test\Unit\Asset;

use Magento\Framework\App\State;
use Magento\Framework\Filesystem;
use Magento\Framework\ObjectManagerInterface;
use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
use Magento\Framework\View\Asset\AssetInterface;
use Magento\Framework\View\Asset\Merged;
use Magento\Framework\View\Asset\MergeService;
use Magento\Framework\View\Asset\ConfigInterface;
use Magento\Framework\View\Asset\MergeStrategy\Checksum;
use Magento\Framework\View\Asset\MergeStrategy\FileExists;

class MergeServiceTest extends \PHPUnit\Framework\TestCase
{
    private $object;

    private $objectManagerMock;

    private $configMock;

    private $filesystemMock;

    protected $directoryMock;

    protected $stateMock;

    protected function setUp()
    {
        $this->objectManagerMock = $this->getMockBuilder(ObjectManagerInterface::class)
            ->getMockForAbstractClass();
        $this->configMock = $this->getMockBuilder(ConfigInterface::class)
            ->getMockForAbstractClass();
        $this->filesystemMock = $this->getMockBuilder(Filesystem::class)
            ->disableOriginalConstructor()
            ->getMock();
        $this->directoryMock = $this->getMockBuilder(Filesystem\Directory\Write::class)
            ->disableOriginalConstructor()
            ->getMock();
        $this->stateMock = $this->getMockBuilder(State::class)
            ->disableOriginalConstructor()
            ->getMock();
        $this->filesystemMock->expects($this->any())
            ->method('getDirectoryWrite')
            ->willReturn($this->directoryMock);

        $this->object = (new ObjectManager($this))->getObject(MergeService::class, [
            'objectManager' => $this->objectManagerMock,
            'config' => $this->configMock,
            'filesystem' => $this->filesystemMock,
            'state' => $this->stateMock,
        ]);
    }

    public function testGetMergedAssetsWrongContentType()
    {
        $this->object->getMergedAssets([], 'unknown');
    }

    public function testGetMergedAssets(array $assets, $contentType, $appMode, $mergeStrategy)
    {
        $mergedAsset = $this->createMock(AssetInterface::class);
        $mergeStrategyMock = $this->createMock($mergeStrategy);

        $this->configMock->expects($this->once())->method('isMergeCssFiles')->willReturn(true);
        $this->configMock->expects($this->once())->method('isMergeJsFiles')->willReturn(true);

        $this->objectManagerMock->expects($this->once())
            ->method('create')
            ->with(Merged::class, ['assets' => $assets, 'mergeStrategy' => $mergeStrategyMock])
            ->willReturn($mergedAsset);
        $this->objectManagerMock->expects($this->once())
            ->method('get')
            ->with($mergeStrategy)
            ->willReturn($mergeStrategyMock);
        $this->stateMock->expects($this->once())
            ->method('getMode')
            ->willReturn($appMode);

        $this->assertSame($mergedAsset, $this->object->getMergedAssets($assets, $contentType));
    }

    public static function getMergedAssetsDataProvider()
    {
        $jsAssets = [
            new \Magento\Framework\View\Asset\Remote('http://127.0.0.1/magento/script_one.js'),
            new \Magento\Framework\View\Asset\Remote('http://127.0.0.1/magento/script_two.js'),
        ];
        $cssAssets = [
            new \Magento\Framework\View\Asset\Remote('http://127.0.0.1/magento/style_one.css'),
            new \Magento\Framework\View\Asset\Remote('http://127.0.0.1/magento/style_two.css'),
        ];
        return [
            'js production mode' => [
                $jsAssets,
                'js',
                State::MODE_PRODUCTION,
                FileExists::class,
            ],
            'css production mode' => [
                $cssAssets,
                'css',
                State::MODE_PRODUCTION,
                FileExists::class,
            ],
            'js default mode' => [
                $jsAssets,
                'js',
                State::MODE_DEFAULT,
                FileExists::class,
            ],
            'css default mode' => [
                $cssAssets,
                'js',
                State::MODE_DEFAULT,
                FileExists::class,
            ],
            'js developer mode' => [
                $jsAssets,
                'js',
                State::MODE_DEVELOPER,
                Checksum::class,
            ],
            'css developer mode' => [
                $cssAssets,
                'css',
                \Magento\Framework\App\State::MODE_DEVELOPER,
                Checksum::class,
            ]
        ];
    }

    public function testCleanMergedJsCss()
    {
        $mergedDir = \Magento\Framework\View\Asset\Merged::getRelativeDir();

        $this->directoryMock->expects($this->once())
            ->method('delete')
            ->with($mergedDir);

        $this->object->cleanMergedJsCss();
    }
}