public function testUnion()
{
// from js
$result = __u::union(array(1, 2, 3), array(2, 30, 1), array(1, 40));
$this->assertEquals(array(1, 2, 3, 30, 40), $result, 'takes the union of a list of arrays');
// extra
$result = __u(array(1, 2, 3))->union(array(2, 30, 1), array(1, 40));
$this->assertEquals(array(1, 2, 3, 30, 40), $result, 'works with OO-style call');
// docs
$arr1 = array(1, 2, 3);
$arr2 = array(101, 2, 1, 10);
$arr3 = array(2, 1);
$this->assertEquals(array(1, 2, 3, 101, 10), __u::union($arr1, $arr2, $arr3));
}
