<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Finder\Tests;

use Symfony\Component\Finder\Finder;

class FinderTest extends Iterator\RealIteratorTestCase
{
    public function testCreate()
    {
        $this->assertInstanceOf('Symfony\Component\Finder\Finder', Finder::create());
    }

    public function testDirectories()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->directories());
        $this->assertIterator($this->toAbsolute(['foo', 'toto']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $finder->directories();
        $finder->files();
        $finder->directories();
        $this->assertIterator($this->toAbsolute(['foo', 'toto']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testFiles()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->files());
        $this->assertIterator($this->toAbsolute(['foo/bar.tmp', 'test.php', 'test.py', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $finder->files();
        $finder->directories();
        $finder->files();
        $this->assertIterator($this->toAbsolute(['foo/bar.tmp', 'test.php', 'test.py', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testRemoveTrailingSlash()
    {
        $finder = $this->buildFinder();

        $expected = $this->toAbsolute(['foo/bar.tmp', 'test.php', 'test.py', 'foo bar']);
        $in = self::$tmpDir.'//';

        $this->assertIterator($expected, $finder->in($in)->files()->getIterator());
    }

    public function testSymlinksNotResolved()
    {
        if ('\\' === \DIRECTORY_SEPARATOR) {
            $this->markTestSkipped('symlinks are not supported on Windows');
        }

        $finder = $this->buildFinder();

        symlink($this->toAbsolute('foo'), $this->toAbsolute('baz'));
        $expected = $this->toAbsolute(['baz/bar.tmp']);
        $in = self::$tmpDir.'/baz/';
        try {
            $this->assertIterator($expected, $finder->in($in)->files()->getIterator());
            unlink($this->toAbsolute('baz'));
        } catch (\Exception $e) {
            unlink($this->toAbsolute('baz'));
            throw $e;
        }
    }

    public function testBackPathNotNormalized()
    {
        $finder = $this->buildFinder();

        $expected = $this->toAbsolute(['foo/../foo/bar.tmp']);
        $in = self::$tmpDir.'/foo/../foo/';
        $this->assertIterator($expected, $finder->in($in)->files()->getIterator());
    }

    public function testDepth()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->depth('< 1'));
        $this->assertIterator($this->toAbsolute(['foo', 'test.php', 'test.py', 'toto', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->depth('<= 0'));
        $this->assertIterator($this->toAbsolute(['foo', 'test.php', 'test.py', 'toto', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->depth('>= 1'));
        $this->assertIterator($this->toAbsolute(['foo/bar.tmp']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $finder->depth('< 1')->depth('>= 1');
        $this->assertIterator([], $finder->in(self::$tmpDir)->getIterator());
    }

    public function testName()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->name('*.php'));
        $this->assertIterator($this->toAbsolute(['test.php']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $finder->name('test.ph*');
        $finder->name('test.py');
        $this->assertIterator($this->toAbsolute(['test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $finder->name('~^test~i');
        $this->assertIterator($this->toAbsolute(['test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $finder->name('~\\.php$~i');
        $this->assertIterator($this->toAbsolute(['test.php']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $finder->name('test.p{hp,y}');
        $this->assertIterator($this->toAbsolute(['test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testNotName()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->notName('*.php'));
        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'test.py', 'toto', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $finder->notName('*.php');
        $finder->notName('*.py');
        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'toto', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $finder->name('test.ph*');
        $finder->name('test.py');
        $finder->notName('*.php');
        $finder->notName('*.py');
        $this->assertIterator([], $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $finder->name('test.ph*');
        $finder->name('test.py');
        $finder->notName('*.p{hp,y}');
        $this->assertIterator([], $finder->in(self::$tmpDir)->getIterator());
    }

    /**
     * @dataProvider getRegexNameTestData
     */
    public function testRegexName($regex)
    {
        $finder = $this->buildFinder();
        $finder->name($regex);
        $this->assertIterator($this->toAbsolute(['test.py', 'test.php']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testSize()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->files()->size('< 1K')->size('> 500'));
        $this->assertIterator($this->toAbsolute(['test.php']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testDate()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->files()->date('until last month'));
        $this->assertIterator($this->toAbsolute(['foo/bar.tmp', 'test.php']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testExclude()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->exclude('foo'));
        $this->assertIterator($this->toAbsolute(['test.php', 'test.py', 'toto', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testIgnoreVCS()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->ignoreVCS(false)->ignoreDotFiles(false));
        $this->assertIterator($this->toAbsolute(['.git', 'foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'toto/.git', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $finder->ignoreVCS(false)->ignoreVCS(false)->ignoreDotFiles(false);
        $this->assertIterator($this->toAbsolute(['.git', 'foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'toto/.git', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->ignoreVCS(true)->ignoreDotFiles(false));
        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testIgnoreVCSCanBeDisabledAfterFirstIteration()
    {
        $finder = $this->buildFinder();
        $finder->in(self::$tmpDir);
        $finder->ignoreDotFiles(false);

        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo bar']), $finder->getIterator());

        $finder->ignoreVCS(false);
        $this->assertIterator($this->toAbsolute(['.git', 'foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'toto/.git', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo bar']), $finder->getIterator());
    }

    public function testIgnoreDotFiles()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->ignoreDotFiles(false)->ignoreVCS(false));
        $this->assertIterator($this->toAbsolute(['.git', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'toto/.git', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $finder->ignoreDotFiles(false)->ignoreDotFiles(false)->ignoreVCS(false);
        $this->assertIterator($this->toAbsolute(['.git', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'toto/.git', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());

        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->ignoreDotFiles(true)->ignoreVCS(false));
        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testIgnoreDotFilesCanBeDisabledAfterFirstIteration()
    {
        $finder = $this->buildFinder();
        $finder->in(self::$tmpDir);

        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'foo bar']), $finder->getIterator());

        $finder->ignoreDotFiles(false);
        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', '.bar', '.foo', '.foo/.bar', '.foo/bar', 'foo bar']), $finder->getIterator());
    }

    public function testSortByName()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->sortByName());
        $this->assertIterator($this->toAbsolute(['foo', 'foo bar', 'foo/bar.tmp', 'test.php', 'test.py', 'toto']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testSortByType()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->sortByType());
        $this->assertIterator($this->toAbsolute(['foo', 'foo bar', 'toto', 'foo/bar.tmp', 'test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testSortByAccessedTime()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->sortByAccessedTime());
        $this->assertIterator($this->toAbsolute(['foo/bar.tmp', 'test.php', 'toto', 'test.py', 'foo', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testSortByChangedTime()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->sortByChangedTime());
        $this->assertIterator($this->toAbsolute(['toto', 'test.py', 'test.php', 'foo/bar.tmp', 'foo', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testSortByModifiedTime()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->sortByModifiedTime());
        $this->assertIterator($this->toAbsolute(['foo/bar.tmp', 'test.php', 'toto', 'test.py', 'foo', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testSort()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->sort(function (\SplFileInfo $a, \SplFileInfo $b) { return strcmp($a->getRealPath(), $b->getRealPath()); }));
        $this->assertIterator($this->toAbsolute(['foo', 'foo bar', 'foo/bar.tmp', 'test.php', 'test.py', 'toto']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testFilter()
    {
        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->filter(function (\SplFileInfo $f) { return false !== strpos($f, 'test'); }));
        $this->assertIterator($this->toAbsolute(['test.php', 'test.py']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testFollowLinks()
    {
        if ('\\' == \DIRECTORY_SEPARATOR) {
            $this->markTestSkipped('symlinks are not supported on Windows');
        }

        $finder = $this->buildFinder();
        $this->assertSame($finder, $finder->followLinks());
        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'test.php', 'test.py', 'toto', 'foo bar']), $finder->in(self::$tmpDir)->getIterator());
    }

    public function testIn()
    {
        $finder = $this->buildFinder();
        $iterator = $finder->files()->name('*.php')->depth('< 1')->in([self::$tmpDir, __DIR__])->getIterator();

        $expected = [
            self::$tmpDir.\DIRECTORY_SEPARATOR.'test.php',
            __DIR__.\DIRECTORY_SEPARATOR.'FinderTest.php',
            __DIR__.\DIRECTORY_SEPARATOR.'GlobTest.php',
        ];

        $this->assertIterator($expected, $iterator);
    }

    /**
     * @expectedException \InvalidArgumentException
     */
    public function testInWithNonExistentDirectory()
    {
        $finder = new Finder();
        $finder->in('foobar');
    }

    public function testInWithGlob()
    {
        $finder = $this->buildFinder();
        $finder->in([__DIR__.'/Fixtures/*/B/C/', __DIR__.'/Fixtures/*/*/B/C/'])->getIterator();

        $this->assertIterator($this->toAbsoluteFixtures(['A/B/C/abc.dat', 'copy/A/B/C/abc.dat.copy']), $finder);
    }

    /**
     * @expectedException \InvalidArgumentException
     */
    public function testInWithNonDirectoryGlob()
    {
        $finder = new Finder();
        $finder->in(__DIR__.'/Fixtures/A/a*');
    }

    public function testInWithGlobBrace()
    {
        if (!\defined('GLOB_BRACE')) {
            $this->markTestSkipped('Glob brace is not supported on this system.');
        }

        $finder = $this->buildFinder();
        $finder->in([__DIR__.'/Fixtures/{A,copy/A}/B/C'])->getIterator();

        $this->assertIterator($this->toAbsoluteFixtures(['A/B/C/abc.dat', 'copy/A/B/C/abc.dat.copy']), $finder);
    }

    /**
     * @expectedException \LogicException
     */
    public function testGetIteratorWithoutIn()
    {
        $finder = Finder::create();
        $finder->getIterator();
    }

    public function testGetIterator()
    {
        $finder = $this->buildFinder();
        $dirs = [];
        foreach ($finder->directories()->in(self::$tmpDir) as $dir) {
            $dirs[] = (string) $dir;
        }

        $expected = $this->toAbsolute(['foo', 'toto']);

        sort($dirs);
        sort($expected);

        $this->assertEquals($expected, $dirs, 'implements the \IteratorAggregate interface');

        $finder = $this->buildFinder();
        $this->assertEquals(2, iterator_count($finder->directories()->in(self::$tmpDir)), 'implements the \IteratorAggregate interface');

        $finder = $this->buildFinder();
        $a = iterator_to_array($finder->directories()->in(self::$tmpDir));
        $a = array_values(array_map('strval', $a));
        sort($a);
        $this->assertEquals($expected, $a, 'implements the \IteratorAggregate interface');
    }

    public function testRelativePath()
    {
        $finder = $this->buildFinder()->in(self::$tmpDir);

        $paths = [];

        foreach ($finder as $file) {
            $paths[] = $file->getRelativePath();
        }

        $ref = ['', '', '', '', 'foo', ''];

        sort($ref);
        sort($paths);

        $this->assertEquals($ref, $paths);
    }

    public function testRelativePathname()
    {
        $finder = $this->buildFinder()->in(self::$tmpDir)->sortByName();

        $paths = [];

        foreach ($finder as $file) {
            $paths[] = $file->getRelativePathname();
        }

        $ref = ['test.php', 'toto', 'test.py', 'foo', 'foo'.\DIRECTORY_SEPARATOR.'bar.tmp', 'foo bar'];

        sort($paths);
        sort($ref);

        $this->assertEquals($ref, $paths);
    }

    public function testAppendWithAFinder()
    {
        $finder = $this->buildFinder();
        $finder->files()->in(self::$tmpDir.\DIRECTORY_SEPARATOR.'foo');

        $finder1 = $this->buildFinder();
        $finder1->directories()->in(self::$tmpDir);

        $finder = $finder->append($finder1);

        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'toto']), $finder->getIterator());
    }

    public function testAppendWithAnArray()
    {
        $finder = $this->buildFinder();
        $finder->files()->in(self::$tmpDir.\DIRECTORY_SEPARATOR.'foo');

        $finder->append($this->toAbsolute(['foo', 'toto']));

        $this->assertIterator($this->toAbsolute(['foo', 'foo/bar.tmp', 'toto']), $finder->getIterator());
    }

    public function testAppendReturnsAFinder()
    {
        $this->assertInstanceOf('Symfony\\Component\\Finder\\Finder', Finder::create()->append([]));
    }

    public function testAppendDoesNotRequireIn()
    {
        $finder = $this->buildFinder();
        $finder->in(self::$tmpDir.\DIRECTORY_SEPARATOR.'foo');

        $finder1 = Finder::create()->append($finder);

        $this->assertIterator(iterator_to_array($finder->getIterator()), $finder1->getIterator());
    }

    public function testCountDirectories()
    {
        $directory = Finder::create()->directories()->in(self::$tmpDir);
        $i = 0;

        foreach ($directory as $dir) {
            ++$i;
        }

        $this->assertCount($i, $directory);
    }

    public function testCountFiles()
    {
        $files = Finder::create()->files()->in(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
        $i = 0;

        foreach ($files as $file) {
            ++$i;
        }

        $this->assertCount($i, $files);
    }

    /**
     * @expectedException \LogicException
     */
    public function testCountWithoutIn()
    {
        $finder = Finder::create()->files();
        \count($finder);
    }

    public function testHasResults()
    {
        $finder = $this->buildFinder();
        $finder->in(__DIR__);
        $this->assertTrue($finder->hasResults());
    }

    public function testNoResults()
    {
        $finder = $this->buildFinder();
        $finder->in(__DIR__)->name('DoesNotExist');
        $this->assertFalse($finder->hasResults());
    }

    /**
     * @dataProvider getContainsTestData
     */
    public function testContains($matchPatterns, $noMatchPatterns, $expected)
    {
        $finder = $this->buildFinder();
        $finder->in(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures')
            ->name('*.txt')->sortByName()
            ->contains($matchPatterns)
            ->notContains($noMatchPatterns);

        $this->assertIterator($this->toAbsoluteFixtures($expected), $finder);
    }

    public function testContainsOnDirectory()
    {
        $finder = $this->buildFinder();
        $finder->in(__DIR__)
            ->directories()
            ->name('Fixtures')
            ->contains('abc');
        $this->assertIterator([], $finder);
    }

    public function testNotContainsOnDirectory()
    {
        $finder = $this->buildFinder();
        $finder->in(__DIR__)
            ->directories()
            ->name('Fixtures')
            ->notContains('abc');
        $this->assertIterator([], $finder);
    }

    /**
     * Searching in multiple locations involves AppendIterator which does an unnecessary rewind which leaves FilterIterator
     * with inner FilesystemIterator in an invalid state.
     *
     * @see https://bugs.php.net/68557
     */
    public function testMultipleLocations()
    {
        $locations = [
            self::$tmpDir.'/',
            self::$tmpDir.'/toto/',
        ];

        // it is expected that there are test.py test.php in the tmpDir
        $finder = new Finder();
        $finder->in($locations)
            // the default flag IGNORE_DOT_FILES fixes the problem indirectly
            // so we set it to false for better isolation
            ->ignoreDotFiles(false)
            ->depth('< 1')->name('test.php');

        $this->assertCount(1, $finder);
    }

    /**
     * Searching in multiple locations with sub directories involves
     * AppendIterator which does an unnecessary rewind which leaves
     * FilterIterator with inner FilesystemIterator in an invalid state.
     *
     * @see https://bugs.php.net/68557
     */
    public function testMultipleLocationsWithSubDirectories()
    {
        $locations = [
            __DIR__.'/Fixtures/one',
            self::$tmpDir.\DIRECTORY_SEPARATOR.'toto',
        ];

        $finder = $this->buildFinder();
        $finder->in($locations)->depth('< 10')->name('*.neon');

        $expected = [
            __DIR__.'/Fixtures/one'.\DIRECTORY_SEPARATOR.'b'.\DIRECTORY_SEPARATOR.'c.neon',
            __DIR__.'/Fixtures/one'.\DIRECTORY_SEPARATOR.'b'.\DIRECTORY_SEPARATOR.'d.neon',
        ];

        $this->assertIterator($expected, $finder);
        $this->assertIteratorInForeach($expected, $finder);
    }

    /**
     * Iterator keys must be the file pathname.
     */
    public function testIteratorKeys()
    {
        $finder = $this->buildFinder()->in(self::$tmpDir);
        foreach ($finder as $key => $file) {
            $this->assertEquals($file->getPathname(), $key);
        }
    }

    public function testRegexSpecialCharsLocationWithPathRestrictionContainingStartFlag()
    {
        $finder = $this->buildFinder();
        $finder->in(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures'.\DIRECTORY_SEPARATOR.'r+e.gex[c]a(r)s')
            ->path('/^dir/');

        $expected = ['r+e.gex[c]a(r)s'.\DIRECTORY_SEPARATOR.'dir', 'r+e.gex[c]a(r)s'.\DIRECTORY_SEPARATOR.'dir'.\DIRECTORY_SEPARATOR.'bar.dat'];
        $this->assertIterator($this->toAbsoluteFixtures($expected), $finder);
    }

    public function getContainsTestData()
    {
        return [
            ['', '', []],
            ['foo', 'bar', []],
            ['', 'foobar', ['dolor.txt', 'ipsum.txt', 'lorem.txt']],
            ['lorem ipsum dolor sit amet', 'foobar', ['lorem.txt']],
            ['sit', 'bar', ['dolor.txt', 'ipsum.txt', 'lorem.txt']],
            ['dolor sit amet', '@^L@m', ['dolor.txt', 'ipsum.txt']],
            ['/^lorem ipsum dolor sit amet$/m', 'foobar', ['lorem.txt']],
            ['lorem', 'foobar', ['lorem.txt']],
            ['', 'lorem', ['dolor.txt', 'ipsum.txt']],
            ['ipsum dolor sit amet', '/^IPSUM/m', ['lorem.txt']],
        ];
    }

    public function getRegexNameTestData()
    {
        return [
            ['~.+\\.p.+~i'],
            ['~t.*s~i'],
        ];
    }

    /**
     * @dataProvider getTestPathData
     */
    public function testPath($matchPatterns, $noMatchPatterns, array $expected)
    {
        $finder = $this->buildFinder();
        $finder->in(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures')
            ->path($matchPatterns)
            ->notPath($noMatchPatterns);

        $this->assertIterator($this->toAbsoluteFixtures($expected), $finder);
    }

    public function getTestPathData()
    {
        return [
            ['', '', []],
            ['/^A\/B\/C/', '/C$/',
                ['A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat'],
            ],
            ['/^A\/B/', 'foobar',
                [
                    'A'.\DIRECTORY_SEPARATOR.'B',
                    'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
                    'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'ab.dat',
                    'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat',
                ],
            ],
            ['A/B/C', 'foobar',
                [
                    'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
                    'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat',
                    'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
                    'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat.copy',
                ],
            ],
            ['A/B', 'foobar',
                [
                    //dirs
                    'A'.\DIRECTORY_SEPARATOR.'B',
                    'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
                    'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B',
                    'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C',
                    //files
                    'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'ab.dat',
                    'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat',
                    'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'ab.dat.copy',
                    'copy'.\DIRECTORY_SEPARATOR.'A'.\DIRECTORY_SEPARATOR.'B'.\DIRECTORY_SEPARATOR.'C'.\DIRECTORY_SEPARATOR.'abc.dat.copy',
                ],
            ],
            ['/^with space\//', 'foobar',
                [
                    'with space'.\DIRECTORY_SEPARATOR.'foo.txt',
                ],
            ],
        ];
    }

    public function testAccessDeniedException()
    {
        if ('\\' === \DIRECTORY_SEPARATOR) {
            $this->markTestSkipped('chmod is not supported on Windows');
        }

        $finder = $this->buildFinder();
        $finder->files()->in(self::$tmpDir);

        // make 'foo' directory non-readable
        $testDir = self::$tmpDir.\DIRECTORY_SEPARATOR.'foo';
        chmod($testDir, 0333);

        if (false === $couldRead = is_readable($testDir)) {
            try {
                $this->assertIterator($this->toAbsolute(['foo bar', 'test.php', 'test.py']), $finder->getIterator());
                $this->fail('Finder should throw an exception when opening a non-readable directory.');
            } catch (\Exception $e) {
                $expectedExceptionClass = 'Symfony\\Component\\Finder\\Exception\\AccessDeniedException';
                if ($e instanceof \PHPUnit_Framework_ExpectationFailedException) {
                    $this->fail(sprintf("Expected exception:\n%s\nGot:\n%s\nWith comparison failure:\n%s", $expectedExceptionClass, 'PHPUnit_Framework_ExpectationFailedException', $e->getComparisonFailure()->getExpectedAsString()));
                }

                if ($e instanceof \PHPUnit\Framework\ExpectationFailedException) {
                    $this->fail(sprintf("Expected exception:\n%s\nGot:\n%s\nWith comparison failure:\n%s", $expectedExceptionClass, '\PHPUnit\Framework\ExpectationFailedException', $e->getComparisonFailure()->getExpectedAsString()));
                }

                $this->assertInstanceOf($expectedExceptionClass, $e);
            }
        }

        // restore original permissions
        chmod($testDir, 0777);
        clearstatcache(true, $testDir);

        if ($couldRead) {
            $this->markTestSkipped('could read test files while test requires unreadable');
        }
    }

    public function testIgnoredAccessDeniedException()
    {
        if ('\\' === \DIRECTORY_SEPARATOR) {
            $this->markTestSkipped('chmod is not supported on Windows');
        }

        $finder = $this->buildFinder();
        $finder->files()->ignoreUnreadableDirs()->in(self::$tmpDir);

        // make 'foo' directory non-readable
        $testDir = self::$tmpDir.\DIRECTORY_SEPARATOR.'foo';
        chmod($testDir, 0333);

        if (false === ($couldRead = is_readable($testDir))) {
            $this->assertIterator($this->toAbsolute(['foo bar', 'test.php', 'test.py']), $finder->getIterator());
        }

        // restore original permissions
        chmod($testDir, 0777);
        clearstatcache(true, $testDir);

        if ($couldRead) {
            $this->markTestSkipped('could read test files while test requires unreadable');
        }
    }

    protected function buildFinder()
    {
        return Finder::create();
    }
}
