public function testUnderscoreFindsRightClassToCall()
{
$numbers = array(3, 4, 5);
$product = Underscore::reduce($numbers, function ($w, $v) {
return $w * $v;
}, 1);
$this->assertEquals(60, $product);
}
function _reduce($list, $iterator, $memo, $context = NULL)
{
return Underscore::reduce($list, $iterator, $memo, $context);
}
/**
* @tags collections
*/
public function testReduce()
{
// it should provide the memo, the value, the index and the list to the reduction function (in that order)
$test = $this;
_::reduce(['a' => 1, 'b' => 2, 'c' => 3], function ($m, $v, $k, $l) use($test) {
$test->integer($v);
$test->string($k);
$test->array($l);
$test->boolean(is_null($m))->isTrue();
return $m;
}, null);
$this->typeTolerant([1, 2, 3], 6, function ($in, $out) {
$this->variable(_::reduce($in, function ($m, $v) {
return $m + $v;
}, 0))->isEqualTo($out);
}, [0, -1]);
// it should be possible to specify a context for reduction function
$this->variable(_::reduce([1, 2, 3], function ($m, $v) {
return ($m + $v) * $this->mult;
}, 0, (object) ['mult' => 2]))->isEqualTo(22);
}