Remove outdated doctrine/cache package and change configuration

tests/OnlineTests/ObjectRetrieverCacheTest.php

@@ -0,0 +1,47 @@
+<?php
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ 
+namespace CloudObjects\SDK;
+
+use ML\IRI\IRI;
+use Kevinrob\GuzzleCache\Storage\VolatileRuntimeStorage;
+use CloudObjects\SDK\TestHelpers\InMemoryLogger;
+
+class ObjectRetrieverCacheTest extends \PHPUnit\Framework\TestCase {
+
+    public function testCacheInRuntimeStorage() {
+        $cacheStorage = new VolatileRuntimeStorage;
+        $logger = new InMemoryLogger;
+
+        $coid = new IRI('coid://cloudobjects.io');
+
+        $retriever = new ObjectRetriever([
+            'cache_storage' => $cacheStorage,
+            'logger' => $logger
+        ]);
+
+        $object1 = $retriever->getCloudObject($coid);
+
+        $this->assertNotNull($object1);
+        $this->assertNotNull($cacheStorage->fetch($retriever->getCacheKey((string)$coid)));
+        $this->assertStringContainsString('from Core API', $logger->getLastLogMessage());
+
+        // Reinitialize retriever with same cache storage to verify that cache is used
+        $retriever = new ObjectRetriever([
+            'cache_storage' => $cacheStorage,
+            'logger' => $logger
+        ]);
+
+        $object2 = $retriever->getCloudObject($coid);
+
+        $this->assertNotNull($object2);
+        $this->assertNotNull($cacheStorage->fetch($retriever->getCacheKey((string)$coid)));
+        $this->assertStringContainsString('from object cache', $logger->getLastLogMessage());
+
+        $this->assertEquals($object1->getRevision(), $object2->getRevision());
+    }
+
+}