Fix. Sorting with extraction function inside

Author: sokolovsky

composer.json

@@ -3,7 +3,7 @@
   "description": "Collections library for php language",
   "minimum-stability": "dev",
   "license": "MIT",
-  "version": "1.1.6",
+  "version": "1.1.7",
   "authors": [
     {
       "name": "Maxim Sokolovsky",

src/WS/Utils/Collections/SerialStream.php

@@ -137,8 +137,10 @@ public function sortBy(callable $extractor): Stream
         sort($values);
         $newList = $this->emptyList();
         foreach ($values as $value) {
-            $els = $map[$value.''] ?? [];
+            $key = $value.'';
+            $els = $map[$key] ?? [];
             $newList->addAll($els);
+            unset($map[$key]);
         }
         $this->list = $newList;
 

tests/WS/Utils/Collections/SerialStreamTest.php

@@ -480,6 +480,7 @@ public function sortingWithExtractor($input, $min, $max): void
 
         $this->assertEquals($min, $actualMin->getValue());
         $this->assertEquals($max, $actualMax->getValue());
+        $this->assertEquals(count($input), $sortedCollection->size());
     }
 
     /**