NsplTest\ATest::testMap PHP Метод

    public function testMap()
    {
        $this->assertEquals(['A', 'B', 'C'], map('strtoupper', ['a', 'b', 'c']));
        $this->assertEquals([1, 4, 9], map(function ($v) {
            return $v * $v;
        }, new \ArrayIterator([1, 2, 3])));
        $this->assertEquals(['a' => 0, 'b' => 1, 'c' => 2], map('abs', array('a' => 0, 'b' => -1, 'c' => 2)));
        $this->assertEquals([], map('strtoupper', []));
        $range = function ($min, $max) {
            for ($i = $min; $i <= $max; ++$i) {
                (yield $i);
            }
        };
        $this->assertEquals([1, 4, 9], map(function ($v) {
            return $v * $v;
        }, $range(1, 3)));
        $this->assertEquals(['A', 'B', 'C'], call_user_func(map, 'strtoupper', ['a', 'b', 'c']));
        $this->assertEquals('\\nspl\\a\\map', map);
    }