/**
* testMemoize().
*/
public function testMemoize()
{
$xs = Ginq::from(array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10))->where(function ($x) {
return $x % 2 == 0;
})->renum()->memoize();
$arr0 = $xs->take(2)->toArray();
$this->assertEquals(array(2, 4), $arr0);
$arr1 = $xs->toArray();
$this->assertEquals(array(2, 4, 6, 8, 10), $arr1);
// empty iterator
$zero = Ginq::zero()->memoize()->toArray();
$this->assertEquals(array(), $zero);
// empty iterator
$zero = Ginq::from(array())->memoize()->toArray();
$this->assertEquals(array(), $zero);
}
