public function testCopy()
{
$set = new Set();
$set->add('hello', 'world', 100, function () {
}, array(3, 2, 1));
//Shallow copy
$set2 = $set->copy(false);
$this->assertTrue($set[3] === $set2[3]);
//Deep copy
$set3 = $set->copy();
$this->assertFalse($set[3] === $set3[3]);
}
