public function testADiffWithKeyValueCallback()
{
$xao = new XArray(['x' => 1, 'ab' => 22, 'z' => 3]);
$obj = $xao->adiff(['ab' => 2, 'z' => 1], 'length_compare_func', 'length_compare_func');
$this->assertEquals(['ab' => 22], (array) $obj);
}
