--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * This code is partially based on the Rack-Cache library by Ryan Tomayko,
+ * which is released under the MIT license.
+ * (based on commit 02d2b48d75bcb63cf1c0c7149c077ad256542801)
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\Tests\HttpCache;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\HttpCache\ResponseCacheStrategy;
+
+class ResponseCacheStrategyTest extends TestCase
+{
+ public function testMinimumSharedMaxAgeWins()
+ {
+ $cacheStrategy = new ResponseCacheStrategy();
+
+ $response1 = new Response();
+ $response1->setSharedMaxAge(60);
+ $cacheStrategy->add($response1);
+
+ $response2 = new Response();
+ $response2->setSharedMaxAge(3600);
+ $cacheStrategy->add($response2);
+
+ $response = new Response();
+ $response->setSharedMaxAge(86400);
+ $cacheStrategy->update($response);
+
+ $this->assertSame('60', $response->headers->getCacheControlDirective('s-maxage'));
+ }
+
+ public function testSharedMaxAgeNotSetIfNotSetInAnyEmbeddedRequest()
+ {
+ $cacheStrategy = new ResponseCacheStrategy();
+
+ $response1 = new Response();
+ $response1->setSharedMaxAge(60);
+ $cacheStrategy->add($response1);
+
+ $response2 = new Response();
+ $cacheStrategy->add($response2);
+
+ $response = new Response();
+ $response->setSharedMaxAge(86400);
+ $cacheStrategy->update($response);
+
+ $this->assertFalse($response->headers->hasCacheControlDirective('s-maxage'));
+ }
+
+ public function testSharedMaxAgeNotSetIfNotSetInMasterRequest()
+ {
+ $cacheStrategy = new ResponseCacheStrategy();
+
+ $response1 = new Response();
+ $response1->setSharedMaxAge(60);
+ $cacheStrategy->add($response1);
+
+ $response2 = new Response();
+ $response2->setSharedMaxAge(3600);
+ $cacheStrategy->add($response2);
+
+ $response = new Response();
+ $cacheStrategy->update($response);
+
+ $this->assertFalse($response->headers->hasCacheControlDirective('s-maxage'));
+ }
+}