NsplTest\ATest::testFirst PHP Method

    public function testFirst()
    {
        $this->assertEquals(1, first([1, 2, 3, 4, 5, 6, 7, 8, 9]));
        $this->assertEquals(1, first(new \ArrayIterator([1, 2, 3, 4, 5, 6, 7, 8, 9])));
        $this->assertEquals(1, first(array('hello' => 1, 'world' => 2)));
        $this->assertEquals(1, first([1]));
        $this->assertEquals(1, call_user_func(first, [1, 2, 3, 4, 5, 6, 7, 8, 9]));
        $this->assertEquals('\\nspl\\a\\first', first);
    }