public function testReduce()
{
$stream = new S\Stream(array(1, 2, 3, 4));
$sum = $stream->reduce(0, function ($item, $next) {
return $item + $next;
});
$this->assertEquals(10, $sum);
$mult = $stream->reduce(1, function ($item, $next) {
return $item * $next;
});
$this->assertEquals(24, $mult);
}
