From 5de1d66253b9d3797e6a8b23461b1ceae72bb432 Mon Sep 17 00:00:00 2001
From: Arkadiusz Kondas <arkadiusz.kondas@gmail.com>
Date: Wed, 10 Apr 2024 06:24:49 +0200
Subject: [PATCH] Implement containsAll method

---
 src/Value.php                        | 16 ++++++++++++++++
 tests/Collection/GenericListTest.php | 12 ++++++++++++
 tests/Collection/StreamTest.php      | 12 ++++++++++++
 3 files changed, 40 insertions(+)

diff --git a/src/Value.php b/src/Value.php
index 1889bf3..b5eb7b8 100644
--- a/src/Value.php
+++ b/src/Value.php
@@ -7,6 +7,7 @@
 use Munus\Collection\Iterator;
 use Munus\Collection\Stream;
 use Munus\Collection\Stream\Collector;
+use Munus\Collection\Traversable;
 use Munus\Control\Option;
 use Munus\Control\TryTo;
 use Munus\Value\Comparator;
@@ -118,6 +119,21 @@ public function contains($element): bool
         return false;
     }
 
+    /**
+     * @param Traversable<T> $elements
+     */
+    public function containsAll(Traversable $elements): bool
+    {
+        $iterator = $elements->iterator();
+        while ($iterator->hasNext()) {
+            if (!$this->contains($iterator->next())) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
     /**
      * @param callable(T):bool $predicate
      */
diff --git a/tests/Collection/GenericListTest.php b/tests/Collection/GenericListTest.php
index 453446a..8aa9935 100644
--- a/tests/Collection/GenericListTest.php
+++ b/tests/Collection/GenericListTest.php
@@ -208,4 +208,16 @@ public function testListSorted(): void
     {
         self::assertTrue(GenericList::of('a', 'b', 'c', 'd', 'e')->equals(GenericList::of('e', 'd', 'c', 'b', 'a')->sorted()));
     }
+
+    public function testListContainsAll()
+    {
+        self::assertTrue(GenericList::ofAll([1, 2, 3])->containsAll(GenericList::ofAll([3, 2, 1])));
+        self::assertTrue(GenericList::ofAll([1, 2, 3])->containsAll(GenericList::ofAll([2, 1])));
+        self::assertTrue(GenericList::ofAll([1, 2, 3])->containsAll(GenericList::ofAll([1])));
+
+        self::assertFalse(GenericList::ofAll([1, 2, 3])->containsAll(GenericList::ofAll([1, 2, 3, 4])));
+        self::assertFalse(GenericList::ofAll([1, 2, 3])->containsAll(GenericList::ofAll([1, 2, 4])));
+        self::assertFalse(GenericList::ofAll([1, 2, 3])->containsAll(GenericList::ofAll([1, 4])));
+        self::assertFalse(GenericList::ofAll([1, 2, 3])->containsAll(GenericList::ofAll(['a'])));
+    }
 }
diff --git a/tests/Collection/StreamTest.php b/tests/Collection/StreamTest.php
index 5519866..da60b69 100644
--- a/tests/Collection/StreamTest.php
+++ b/tests/Collection/StreamTest.php
@@ -100,6 +100,18 @@ public function testStreamContains(): void
         self::assertTrue(Stream::ofAll([1, 2, 3])->contains(2));
     }
 
+    public function testStreamContainsAll(): void
+    {
+        self::assertTrue(Stream::ofAll([1, 2, 3])->containsAll(Stream::ofAll([3, 2, 1])));
+        self::assertTrue(Stream::ofAll([1, 2, 3])->containsAll(Stream::ofAll([2, 1])));
+        self::assertTrue(Stream::ofAll([1, 2, 3])->containsAll(Stream::ofAll([1])));
+
+        self::assertFalse(Stream::ofAll([1, 2, 3])->containsAll(Stream::ofAll([1, 2, 3, 4])));
+        self::assertFalse(Stream::ofAll([1, 2, 3])->containsAll(Stream::ofAll([1, 2, 4])));
+        self::assertFalse(Stream::ofAll([1, 2, 3])->containsAll(Stream::ofAll([1, 4])));
+        self::assertFalse(Stream::ofAll([1, 2, 3])->containsAll(Stream::ofAll(['a'])));
+    }
+
     public function testStreamMapSingle(): void
     {
         self::assertTrue(