[+]: add more tests

-> danielstjules#183

thanks @takyam-git

Author: voku

tests/StringyOrigTest.php

@@ -347,6 +347,8 @@ public function linesProvider()
             [['fòô', '', 'bàř'], "fòô\r\n\r\nbàř", 'UTF-8'],
             [['fòô', 'bàř', ''], "fòô\r\nbàř\r\n", 'UTF-8'],
             [['', 'fòô', 'bàř'], "\r\nfòô\r\nbàř", 'UTF-8'],
+            [['1111111111111111111'], '1111111111111111111', 'UTF-8'],
+            [['1111111111111111111111'], '1111111111111111111111', 'UTF-8'],
         ];
     }