From 7a42ba6d82aa55740d7bcf5662692dd3421ffeec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marcin=20Nabia=C5=82ek?= <dev@nabialek.org>
Date: Sun, 7 Aug 2016 19:37:16 +0200
Subject: [PATCH] [5.3] Add containsStrict method (#14657)

* Add containsStrict method

* Fix code style
---
 src/Illuminate/Support/Collection.php   | 22 ++++++++++++++++++
 tests/Support/SupportCollectionTest.php | 30 +++++++++++++++++++++++++
 2 files changed, 52 insertions(+)

diff --git a/src/Illuminate/Support/Collection.php b/src/Illuminate/Support/Collection.php
index a4714336aa14..ea34c1746964 100644
--- a/src/Illuminate/Support/Collection.php
+++ b/src/Illuminate/Support/Collection.php
@@ -172,6 +172,28 @@ public function contains($key, $value = null)
         return in_array($key, $this->items);
     }
 
+    /**
+     * Determine if an item exists in the collection using strict comparison.
+     *
+     * @param  mixed  $key
+     * @param  mixed  $value
+     * @return bool
+     */
+    public function containsStrict($key, $value = null)
+    {
+        if (func_num_args() == 2) {
+            return $this->contains(function ($item) use ($key, $value) {
+                return data_get($item, $key) === $value;
+            });
+        }
+
+        if ($this->useAsCallable($key)) {
+            return ! is_null($this->first($key));
+        }
+
+        return in_array($key, $this->items, true);
+    }
+
     /**
      * Get the items in the collection that are not present in the given items.
      *
diff --git a/tests/Support/SupportCollectionTest.php b/tests/Support/SupportCollectionTest.php
index 52069e8bb24c..60acb3a90832 100755
--- a/tests/Support/SupportCollectionTest.php
+++ b/tests/Support/SupportCollectionTest.php
@@ -1092,6 +1092,36 @@ public function testContains()
         $this->assertFalse($c->contains('foo'));
     }
 
+    public function testContainsStrict()
+    {
+        $c = new Collection([1, 3, 5, '02']);
+
+        $this->assertTrue($c->containsStrict(1));
+        $this->assertFalse($c->containsStrict(2));
+        $this->assertTrue($c->containsStrict('02'));
+        $this->assertTrue($c->containsStrict(function ($value) {
+            return $value < 5;
+        }));
+        $this->assertFalse($c->containsStrict(function ($value) {
+            return $value > 5;
+        }));
+
+        $c = new Collection([['v' => 1], ['v' => 3], ['v' => '04'], ['v' => 5]]);
+
+        $this->assertTrue($c->containsStrict('v', 1));
+        $this->assertFalse($c->containsStrict('v', 2));
+        $this->assertFalse($c->containsStrict('v', 4));
+        $this->assertTrue($c->containsStrict('v', '04'));
+
+        $c = new Collection(['date', 'class', (object) ['foo' => 50], '']);
+
+        $this->assertTrue($c->containsStrict('date'));
+        $this->assertTrue($c->containsStrict('class'));
+        $this->assertFalse($c->containsStrict('foo'));
+        $this->assertFalse($c->containsStrict(null));
+        $this->assertTrue($c->containsStrict(''));
+    }
+
     public function testGettingSumFromCollection()
     {
         $c = new Collection([(object) ['foo' => 50], (object) ['foo' => 50]]);