public function testSlicePreservingKeys()
{
$xao = new XArray([3 => 5, 6 => 2, 0 => 6, 7 => 3]);
// without
$this->assertEquals([2, 6], (array) $xao->slice(1, 2));
$this->assertEquals([2, 6], (array) $xao->slice(1, 2, XAInterface::IGNORE_KEYS));
// with
$this->assertEquals([6 => 2, 0 => 6], (array) $xao->slice(1, 2, XAInterface::PRESERVE_KEYS));
// without length
$this->assertEquals([6 => 2, 0 => 6, 7 => 3], (array) $xao->slice(1, NULL, XAInterface::PRESERVE_KEYS));
}
