convert vardump to warning

Author: doganoo

phpunit.xml

@@ -5,7 +5,7 @@
          colors="true"
          convertErrorsToExceptions="true"
          convertNoticesToExceptions="true"
-         convertWarningsToExceptions="true"
+         convertWarningsToExceptions="false"
          processIsolation="false"
          stopOnFailure="false"
          syntaxCheck="false">

src/Algorithm/Sorting/TimSort.php

@@ -41,7 +41,10 @@ class TimSort implements ISortable {
     public const RUN = 32;
 
     public function __construct() {
-        var_dump('Notice, the sorting algorithm seems to be broken, according to: https://github.com/doganoo/PHPAlgorithms/issues/23. Feel free to open a PR or use another sorting algorithm instead :)');
+        trigger_error(
+            'Notice, the sorting algorithm seems to be broken, according to: https://github.com/doganoo/PHPAlgorithms/issues/23. Feel free to open a PR or use another sorting algorithm instead :)'
+            , E_USER_WARNING
+        );
     }
 
     /**