public function testSort()
{
$original = [3, 1, 2];
$expected = [1, 2, 3];
$collection = new Collection($original);
$sorted = $collection->sort(function ($a, $b) {
if ($a == $b) {
return 0;
}
return $a < $b ? -1 : +1;
});
$this->assertInstanceOf(Collection::class, $sorted);
$this->assertNotSame($collection, $sorted);
$this->assertSame($expected, $sorted->toArray());
$this->assertSame($original, $collection->toArray());
}
