--TEST--
Test Collection::sort(), Collection::sortDescending(), Collection::sorted(), Collection::sortedDescending().
--FILE--
<?php
$array = [];
for ($i = 0; $i < 100; ++$i) {
    $array[] = mt_rand(-200, 200);
}

$collection = Collection::init($array);
$collection->sort();
$array1 = $array;
sort($array1, SORT_NUMERIC);
if ($array1 != $collection->toArray()) {
    echo 'Collection::sort() failed.', PHP_EOL;
}

$collection = Collection::init($array);
$collection->sortDescending();
$array1 = $array;
rsort($array1, SORT_NUMERIC);
if ($array1 != $collection->toArray()) {
    echo 'Collection::sortDescending() failed.', PHP_EOL;
}

$collection = Collection::init($array);
$array1 = $array;
sort($array1, SORT_NUMERIC);
if ($array1 != $collection->sorted()->toArray()) {
    echo 'Collection::sorted() failed.', PHP_EOL;
}

$collection = Collection::init($array);
$array1 = $array;
rsort($array1, SORT_NUMERIC);
if ($array1 != $collection->sortedDescending()->toArray()) {
    echo 'Collection::sortedDescending() failed.', PHP_EOL;
}
?>
--EXPECT--