public function testThatArrayIsShuffled()
{
//Test that null is returned if an empty array is provdied
$this->assertEquals(null, CollectionUtility::shuffle([]));
//Test rest of function
$items = [["a" => 1], ["a" => 2]];
$attempts = 0;
$different = false;
while ($attempts++ < 50) {
$shuffled = CollectionUtility::shuffle($items);
if ($shuffled != $items) {
$different = true;
break;
}
}
if (!$different) {
$this->fail("Items not shuffled after 50 tests, probably not good shuffling but run test again to be sure");
}
}
