Jetpack::sort_modules PHP Method

    public static function sort_modules($a, $b)
    {
        if ($a['sort'] == $b['sort']) {
            return 0;
        }
        return $a['sort'] < $b['sort'] ? -1 : 1;
    }

 /**
  * @author enkrates
  * @covers Jetpack::sort_modules
  * @since 3.2
  */
 public function test_sort_modules_with_different_sort_values()
 {
     $first_file = array('sort' => 10);
     $second_file = array('sort' => 5);
     $sort_value = Jetpack::sort_modules($first_file, $second_file);
     $reversed_sort_value = Jetpack::sort_modules($second_file, $first_file);
     $this->assertEquals(1, $sort_value);
     $this->assertEquals(-1, $reversed_sort_value);
 }