Making cache tags more efficient by rewriting the API.

Related to php-cache/issues#21

Author: Nyholm

Tests/IntegrationHierarchyTest.php

@@ -0,0 +1,30 @@
+<?php
+
+/*
+ * This file is part of php-cache organization.
+ *
+ * (c) 2015-2015 Aaron Scherer <[email protected]>, Tobias Nyholm <[email protected]>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace Cache\Adapter\Void\Tests;
+
+use Cache\Adapter\Void\VoidCachePool;
+use Cache\IntegrationTests\HierarchicalCachePoolTest;
+
+class IntegrationHierarchyTest extends HierarchicalCachePoolTest
+{
+    protected $skippedTests = [
+        'testBasicUsage'                              => 'Void adapter does not save,',
+        'testChain'                                   => 'Void adapter does not save,',
+        'testRemoval'                                 => 'Void adapter does not save,',
+        'testRemovalWhenDeferred'                     => 'Void adapter does not save,',
+    ];
+
+    public function createCachePool()
+    {
+        return new VoidCachePool();
+    }
+}

Tests/IntegrationTagTest.php

@@ -17,12 +17,16 @@
 class IntegrationTagTest extends TaggableCachePoolTest
 {
     protected $skippedTests = [
-        'testBasicUsage'       => 'Void adapter does not save,',
-        'testGetItems'         => 'Void adapter does not save,',
-        'testHasItem'          => 'Void adapter does not save,',
-        'testDeleteItem'       => 'Void adapter does not save,',
-        'testKeysWithDeferred' => 'Void adapter does not save,',
-        'testSaveDeferred'     => 'Void adapter does not save,',
+        'testBasicUsage'                     => 'Void adapter does not save,',
+        'testGetItems'                       => 'Void adapter does not save,',
+        'testHasItem'                        => 'Void adapter does not save,',
+        'testDeleteItem'                     => 'Void adapter does not save,',
+        'testKeysWithDeferred'               => 'Void adapter does not save,',
+        'testSaveDeferred'                   => 'Void adapter does not save,',
+        'testMultipleTags'                   => 'Void adapter does not save,',
+        'testRemoveTagWhenItemIsRemoved'     => 'Void adapter does not save,',
+        'testClear'                          => 'Void adapter does not save,',
+        'testClearTag'                       => 'Void adapter does not save,',
     ];
 
     public function createCachePool()

VoidCachePool.php

@@ -12,16 +12,18 @@
 namespace Cache\Adapter\Void;
 
 use Cache\Adapter\Common\AbstractCachePool;
+use Cache\Hierarchy\HierarchicalPoolInterface;
+use Cache\Taggable\TaggablePoolInterface;
 use Psr\Cache\CacheItemInterface;
 
 /**
  * @author Tobias Nyholm <[email protected]>
  */
-class VoidCachePool extends AbstractCachePool
+class VoidCachePool extends AbstractCachePool implements TaggablePoolInterface, HierarchicalPoolInterface
 {
     protected function fetchObjectFromCache($key)
     {
-        return [false, null];
+        return [false, null, []];
     }
 
     protected function clearAllObjectsFromCache()
@@ -34,7 +36,12 @@ protected function clearOneObjectFromCache($key)
         return true;
     }
 
-    protected function storeItemInCache($key, CacheItemInterface $item, $ttl)
+    protected function storeItemInCache(CacheItemInterface $item, $ttl)
+    {
+        return true;
+    }
+
+    public function clearTags(array $tags)
     {
         return true;
     }

composer.json

@@ -30,7 +30,7 @@
     },
     "require-dev":       {
         "phpunit/phpunit":         "^4.0|^5.1",
-        "cache/integration-tests": "0.7.0"
+        "cache/integration-tests": "0.9.0"
     },
     "provide":           {
         "psr/cache-implementation": "^1.0"