GeneratedFilesTest.php

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<?php
namespace Magento\Framework\Code\Test\Unit;

use Magento\Framework\App\Filesystem\DirectoryList;
use Magento\Framework\Code\GeneratedFiles;

class GeneratedFilesTest extends \PHPUnit\Framework\TestCase
{
    private $directoryList;

    private $writeInterface;

    private $model;

    protected function setUp()
    {
        $this->directoryList =
            $this->createPartialMock(\Magento\Framework\App\Filesystem\DirectoryList::class, ['getPath']);
        $writeFactory = $this->createMock(\Magento\Framework\Filesystem\Directory\WriteFactory::class);
        $this->writeInterface = $this->getMockBuilder(\Magento\Framework\Filesystem\Directory\WriteInterface::class)
            ->setMethods(['getPath', 'delete'])
            ->getMockForAbstractClass();
        $writeFactory->expects($this->once())->method('create')->willReturn($this->writeInterface);
        $this->model = new GeneratedFiles($this->directoryList, $writeFactory);
    }

    public function testCleanGeneratedFiles($getPathMap, $isDirectoryMap, $deleteMap)
    {

        $this->writeInterface
            ->expects($this->any())
            ->method('isExist')
            ->with()
            ->willReturnMap([
                [GeneratedFiles::REGENERATE_FLAG, true],
                ['path/to/di', false]
            ]);
        $this->directoryList->expects($this->any())->method('getPath')->willReturnMap($getPathMap);
        $this->writeInterface->expects($this->any())->method('getRelativePath')->willReturnMap($getPathMap);
        $this->writeInterface->expects($this->any())->method('isDirectory')->willReturnMap($isDirectoryMap);
        $this->writeInterface->expects($this->exactly(1))->method('delete')->willReturnMap($deleteMap);
        $this->model->cleanGeneratedFiles();
    }

    public function cleanGeneratedFilesDataProvider()
    {
        $pathToGeneration = 'path/to/generation';
        $pathToDi = 'path/to/di';
        $pathToCache = 'path/to/di';
        $pathToConfig = 'path/to/config';

        $getPathMap =     [
            [DirectoryList::GENERATED_CODE, $pathToGeneration],
            [DirectoryList::GENERATED_METADATA, $pathToDi],
            [DirectoryList::CACHE, $pathToCache],
            [DirectoryList::CONFIG, $pathToConfig],
        ];

        $deleteMap = [[BP . '/' . $pathToGeneration, true],
            [BP . '/' . $pathToDi, true],
            [BP . GeneratedFiles::REGENERATE_FLAG, true],
        ];

        return [
            'runAll' => [ $getPathMap, [[BP . '/' . $pathToGeneration, true],
                [BP . '/' . $pathToDi, true]], $deleteMap ],
            'noDIfolder' => [ $getPathMap, [[BP . '/' . $pathToGeneration, true],
                [BP . '/' . $pathToDi, false]], $deleteMap],
            'noGenerationfolder' => [$getPathMap, [[BP . '/' . $pathToGeneration, false],
                [BP . '/' . $pathToDi, true]], $deleteMap],
            'nofolders' => [ $getPathMap, [[BP . '/' . $pathToGeneration, false],
                [BP . '/' . $pathToDi, false]], $deleteMap],
        ];
    }

    public function testCleanGeneratedFilesWithNoFlag()
    {
        $this->writeInterface
            ->expects($this->once())
            ->method('isExist')
            ->with(GeneratedFiles::REGENERATE_FLAG)
            ->willReturn(false);
        $this->directoryList->expects($this->never())->method('getPath');
        $this->writeInterface->expects($this->never())->method('getPath');
        $this->writeInterface->expects($this->never())->method('delete');
        $this->model->cleanGeneratedFiles();
    }

    public function testRequestRegeneration()
    {
        $this->writeInterface->expects($this->once())->method("touch");
        $this->model->requestRegeneration();
    }
}