From a305c41c330c16c9b2a0e89f268e51b7f6fcc38b Mon Sep 17 00:00:00 2001
From: Taylor Otwell <taylorotwell@gmail.com>
Date: Sun, 24 Jul 2016 20:35:06 -0500
Subject: [PATCH] remove duplicate method

---
 src/Illuminate/Support/Collection.php   | 14 --------------
 tests/Support/SupportCollectionTest.php | 18 ------------------
 2 files changed, 32 deletions(-)

diff --git a/src/Illuminate/Support/Collection.php b/src/Illuminate/Support/Collection.php
index 9159b090a3e6..a6a79271c940 100644
--- a/src/Illuminate/Support/Collection.php
+++ b/src/Illuminate/Support/Collection.php
@@ -564,20 +564,6 @@ public function map(callable $callback)
         return new static(array_combine($keys, $items));
     }
 
-    /**
-     * Run a map over each key of the items.
-     *
-     * @param  callable  $callback
-     * @return static
-     */
-    public function mapKeys(callable $callback)
-    {
-        return new static(array_combine(
-            array_map($callback, array_keys($this->items), $this->items),
-            array_values($this->items)
-        ));
-    }
-
     /**
      * Map a collection and flatten the result by a single level.
      *
diff --git a/tests/Support/SupportCollectionTest.php b/tests/Support/SupportCollectionTest.php
index 582207091633..fe7b71b8e2b1 100755
--- a/tests/Support/SupportCollectionTest.php
+++ b/tests/Support/SupportCollectionTest.php
@@ -1354,24 +1354,6 @@ public function testWithMultipleModeValues()
         $collection = new Collection([1, 2, 2, 1]);
         $this->assertEquals([1, 2], $collection->mode());
     }
-
-    public function testKeyMapUsingKeysOnly()
-    {
-        $data = new Collection(['foo' => 'something', 'bar' => 'else']);
-        $data = $data->mapKeys(function ($key) {
-            return '-'.$key.'-';
-        });
-        $this->assertEquals(['-foo-' => 'something', '-bar-' => 'else'], $data->all());
-    }
-
-    public function testKeyMapUsingKeysAndValues()
-    {
-        $data = new Collection(['foo' => 'something', 'bar' => 'else']);
-        $data = $data->mapKeys(function ($key, $item) {
-            return $key.'-'.$item;
-        });
-        $this->assertEquals(['foo-something' => 'something', 'bar-else' => 'else'], $data->all());
-    }
 }
 
 class TestAccessorEloquentTestStub