From 8040d9c97ced5619179bd4e032b17a82904b5af4 Mon Sep 17 00:00:00 2001
From: Kevin Bond <kevinbond@gmail.com>
Date: Mon, 22 Jan 2024 18:47:31 -0500
Subject: [PATCH] feat(twig): make `ComponentAttributes` traversable/countable

---
 src/TwigComponent/CHANGELOG.md                       |  4 ++++
 src/TwigComponent/src/ComponentAttributes.php        | 12 +++++++++++-
 .../tests/Unit/ComponentAttributesTest.php           |  8 ++++++++
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/TwigComponent/CHANGELOG.md b/src/TwigComponent/CHANGELOG.md
index 716e0c555a..e924524ce1 100644
--- a/src/TwigComponent/CHANGELOG.md
+++ b/src/TwigComponent/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## Unreleased
+
+-   Make `ComponentAttributes` traversable/countable.
+
 ## 2.13.0
 
 -   [BC BREAK] Add component metadata to `PreMountEvent` and `PostMountEvent`
diff --git a/src/TwigComponent/src/ComponentAttributes.php b/src/TwigComponent/src/ComponentAttributes.php
index 408b2055fa..8606a1c83e 100644
--- a/src/TwigComponent/src/ComponentAttributes.php
+++ b/src/TwigComponent/src/ComponentAttributes.php
@@ -19,7 +19,7 @@
  *
  * @immutable
  */
-final class ComponentAttributes
+final class ComponentAttributes implements \IteratorAggregate, \Countable
 {
     /**
      * @param array<string, string|bool> $attributes
@@ -157,4 +157,14 @@ public function remove($key): self
 
         return new self($attributes);
     }
+
+    public function getIterator(): \Traversable
+    {
+        return new \ArrayIterator($this->attributes);
+    }
+
+    public function count(): int
+    {
+        return \count($this->attributes);
+    }
 }
diff --git a/src/TwigComponent/tests/Unit/ComponentAttributesTest.php b/src/TwigComponent/tests/Unit/ComponentAttributesTest.php
index 32e7d312f8..35fcb5b7d7 100644
--- a/src/TwigComponent/tests/Unit/ComponentAttributesTest.php
+++ b/src/TwigComponent/tests/Unit/ComponentAttributesTest.php
@@ -191,4 +191,12 @@ public function testNullBehaviour(): void
         $this->assertSame(['disabled' => null], $attributes->all());
         $this->assertSame(' disabled', (string) $attributes);
     }
+
+    public function testIsTraversableAndCountable(): void
+    {
+        $attributes = new ComponentAttributes(['foo' => 'bar']);
+
+        $this->assertSame($attributes->all(), iterator_to_array($attributes));
+        $this->assertCount(1, $attributes);
+    }
 }