public function testThatRandomItemIsReturnedViaRandom()
{
//Test that null is returned if an empty array is provdied
$this->assertEquals(null, CollectionUtility::random([]));
//Test rest of function
$items = [["a" => 1], ["a" => 2]];
$attempts = 0;
$different = false;
$random_item = null;
$previous_item = null;
while ($attempts++ < 50) {
//just get one entry where last one is not equal to this one
$random_item = CollectionUtility::random($items);
if (isset($previous_item) && $previous_item != $random_item) {
$different = true;
break;
}
$previous_item = $random_item;
}
if (!$different) {
$this->fail("Same item returned every time over 50 tests, probably not random but run test again to be sure");
}
}
