ResourceUtilityTest.php

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<?php
namespace TYPO3\CMS\Core\Tests\Unit\Utility;

use TYPO3\CMS\Core\Utility\ResourceUtility;

class ResourceUtilityTest extends \TYPO3\CMS\Core\Tests\UnitTestCase {

    public function recursiveFileListSortingHelperTestDataProvider() {
        return array(
            'normal file list' => array(
                array('fileB', 'fileA', 'someFile'),
                array('fileA', 'fileB', 'someFile')
            ),
            'already in correct order' => array(
                array('fileA', 'fileB', 'someFile'),
                array('fileA', 'fileB', 'someFile')
            ),
            'hidden file' => array(
                array('someFile', '.hiddenFile'),
                array('.hiddenFile', 'someFile')
            ),
            'mixed capitalization' => array(
                array('alllower', 'allCAPS', 'ALLcaps', 'mIxedinanotherway', 'ALLCAPS', 'MiXeDcApItAlIzAtIoN'),
                array('ALLCAPS', 'ALLcaps', 'allCAPS', 'alllower', 'MiXeDcApItAlIzAtIoN', 'mIxedinanotherway')
            ),
            'mixed capitalization reversed' => array(
                array('MiXeDcApItAlIzAtIoN', 'mIxedinanotherway', 'ALLcaps', 'allCAPS', 'ALLCAPS', 'alllower'),
                array('ALLCAPS', 'ALLcaps', 'allCAPS', 'alllower', 'MiXeDcApItAlIzAtIoN', 'mIxedinanotherway')
            ),
            'recursive list with one sublevel' => array(
                array('fileA', 'fileB', 'anotherDir/someFile', 'someDir/someFile', 'anotherDir/anotherFile'),
                array('anotherDir/anotherFile', 'anotherDir/someFile', 'someDir/someFile', 'fileA', 'fileB')
            ),
            'recursive list with two sub-levels' => array(
                array('file', 'someDir/someFile', 'someDir/subdir/file', 'someDir/subdir/somefile', 'someDir/anotherDir/somefile', 'anotherDir/someFile'),
                array('anotherDir/someFile', 'someDir/anotherDir/somefile', 'someDir/subdir/file', 'someDir/subdir/somefile', 'someDir/someFile', 'file')
            ),
            'recursive list with three sub-levels' => array(
                array('someDir/someSubdir/file', 'someDir/someSubdir/someSubsubdir/someFile', 'someDir/someSubdir/someSubsubdir/anotherFile'),
                array('someDir/someSubdir/someSubsubdir/anotherFile', 'someDir/someSubdir/someSubsubdir/someFile', 'someDir/someSubdir/file')
            )
        );
    }

    public function recursiveFileListSortingHelperCorrectlySorts($unsortedList, $expectedList) {
        $result = $unsortedList;
        usort(
            $result,
            array('\\TYPO3\\CMS\\Core\\Utility\\ResourceUtility', 'recursiveFileListSortingHelper')
        );
        $this->assertSame($expectedList, $result);
    }
}