generateIntegers(1, 10); $listing = new DirectoryListing($numbers); $mappedListing = $listing->map(function (int $i) { return $i * 2; }); $mappedNumbers = $mappedListing->toArray(); $expectedNumbers = [2, 4, 6, 8, 10, 12, 14, 16, 18, 20]; $this->assertEquals($expectedNumbers, $mappedNumbers); } /** * @test */ public function mapping_a_listing_twice(): void { $numbers = $this->generateIntegers(1, 10); $listing = new DirectoryListing($numbers); $mappedListing = $listing->map(function (int $i) { return $i * 2; }); $mappedListing = $mappedListing->map(function (int $i) { return $i / 2; }); $mappedNumbers = $mappedListing->toArray(); $expectedNumbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; $this->assertEquals($expectedNumbers, $mappedNumbers); } /** * @test */ public function filter_a_listing(): void { $numbers = $this->generateIntegers(1, 20); $listing = new DirectoryListing($numbers); $fileredListing = $listing->filter(function (int $i) { return $i % 2 === 0; }); $mappedNumbers = $fileredListing->toArray(); $expectedNumbers = [2, 4, 6, 8, 10, 12, 14, 16, 18, 20]; $this->assertEquals($expectedNumbers, $mappedNumbers); } /** * @test */ public function filter_a_listing_twice(): void { $numbers = $this->generateIntegers(1, 20); $listing = new DirectoryListing($numbers); $filteredListing = $listing->filter(function (int $i) { return $i % 2 === 0; }); $filteredListing = $filteredListing->filter(function (int $i) { return $i > 10; }); $mappedNumbers = $filteredListing->toArray(); $expectedNumbers = [12, 14, 16, 18, 20]; $this->assertEquals($expectedNumbers, $mappedNumbers); } /** * @test */ public function sorting_a_directory_listing(): void { $expected = ['a/a/a.txt', 'b/c/a.txt', 'c/b/a.txt', 'c/c/a.txt']; $listing = new DirectoryListing([ new FileAttributes('b/c/a.txt'), new FileAttributes('c/c/a.txt'), new FileAttributes('c/b/a.txt'), new FileAttributes('a/a/a.txt'), ]); $actual = $listing->sortByPath() ->map(function ($i) { return $i->path(); }) ->toArray(); self::assertEquals($expected, $actual); } /** * @test * @description this ensures that the output of a sorted listing is iterable * * @see https://github.com/thephpleague/flysystem/issues/1342 */ public function iterating_over_storted_output(): void { $listing = new DirectoryListing([ new FileAttributes('b/c/a.txt'), new FileAttributes('c/c/a.txt'), new FileAttributes('c/b/a.txt'), new FileAttributes('a/a/a.txt'), ]); self::expectNotToPerformAssertions(); iterator_to_array($listing->sortByPath()); } /** * @return Generator */ private function generateIntegers(int $min, int $max): Generator { for ($i = $min; $i <= $max; $i++) { yield $i; } } }