From 0ea23728b30b837b3aa579b7b0b4849fb4d93aa8 Mon Sep 17 00:00:00 2001
From: Greg Bowler <greg@g105b.com>
Date: Tue, 10 Mar 2026 22:55:27 +0000
Subject: [PATCH] feature: Headers implements TypeSafeGetter closes #5

---
 src/Header/Headers.php              | 6 +++++-
 test/phpunit/Header/HeadersTest.php | 7 +++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/Header/Headers.php b/src/Header/Headers.php
index a1e5e2d..6d8ee3c 100644
--- a/src/Header/Headers.php
+++ b/src/Header/Headers.php
@@ -2,13 +2,17 @@
 namespace Gt\Http\Header;
 
 use Countable;
+use Gt\TypeSafeGetter\NullableTypeSafeGetter;
+use Gt\TypeSafeGetter\TypeSafeGetter;
 use Iterator;
 
 /**
  * @implements Iterator<int, HeaderLine>
  * @SuppressWarnings("TooManyPublicMethods")
  */
-class Headers implements Iterator, Countable {
+class Headers implements Iterator, Countable, TypeSafeGetter {
+	use NullableTypeSafeGetter;
+
 	const COMMA_HEADERS = [
 // These cookies use commas within the value, so can't be comma separated.
 		"cookie-set",
diff --git a/test/phpunit/Header/HeadersTest.php b/test/phpunit/Header/HeadersTest.php
index cb11d29..17e7b28 100644
--- a/test/phpunit/Header/HeadersTest.php
+++ b/test/phpunit/Header/HeadersTest.php
@@ -3,6 +3,7 @@
 
 use Gt\Http\Header\HeaderLine;
 use Gt\Http\Header\Headers;
+use Gt\TypeSafeGetter\TypeSafeGetter;
 use PHPUnit\Framework\TestCase;
 
 class HeadersTest extends TestCase {
@@ -99,6 +100,12 @@ public function testGet() {
 		self::assertEquals(self::HEADER_ARRAY["Content-Type"], $headers->get("content-type"));
 	}
 
+	public function testTypeSafeGetterInterface():void {
+		$headers = new Headers(self::HEADER_ARRAY);
+		self::assertInstanceOf(TypeSafeGetter::class, $headers);
+		self::assertSame(self::HEADER_ARRAY["Date"], $headers->getString("date"));
+	}
+
 	public function testGetMultiple() {
 		$headers = new Headers(self::HEADER_ARRAY);
 		$headers->add("Accept", "application/json", "application/xml");