/** * @dataProvider provideData */ public function test_it_should_filter_with_maybe($list, $expected) { $filter = function ($i) { return new Just($i % 2 == 1); }; $this->assertEquals($expected, f\filterM($filter, $list)->extract()); }
public function test_it_should_filter_with_logs() { $data = [1, 10, 15, 20, 25]; $filter = function ($i) { if ($i % 2 == 1) { return W::of(false, S::of("Reject odd number {$i}.\n")); } elseif ($i > 15) { return W::of(false, S::of("Reject {$i} because it is bigger than 15\n")); } return W::of(true); }; list($result, $log) = f\filterM($filter, $data)->runWriter(); $this->assertEquals([10], $result); $this->assertEquals('Reject odd number 1. Reject odd number 15. Reject 20 because it is bigger than 15 Reject odd number 25. ', $log->extract()); }