Issue #2233337 by znerol: Impossible to specify per-bin cache backend service...

Issue #2233337 by znerol: Impossible to specify per-bin cache backend service from within settings.php.

core/tests/Drupal/Tests/Core/Cache/CacheFactoryTest.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Tests\Core\Cache\CacheFactoryTest.
+ */
+
+namespace Drupal\Tests\Core\Cache;
+
+use Drupal\Core\DependencyInjection\ContainerBuilder;
+use Drupal\Component\Utility\Settings;
+use Drupal\Core\Cache\CacheFactory;
+use Drupal\Tests\UnitTestCase;
+
+/**
+ * Tests the cache CacheFactory.
+ *
+ * @group Cache
+ *
+ * @coversDefaultClass \Drupal\Core\Cache\CacheFactory
+ */
+class CacheFactoryTest extends UnitTestCase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getInfo() {
+    return array(
+      'name' => 'Cache factory test',
+      'description' => 'Tests the cache CacheFactory.',
+      'group' => 'Cache',
+    );
+  }
+
+  /**
+   * Test that the cache factory falls back to the built-in default service.
+   *
+   * @covers ::__construct
+   * @covers ::get
+   */
+  public function testCacheFactoryWithDefaultSettings() {
+    $settings = new Settings(array());
+    $cache_factory = new CacheFactory($settings);
+
+    $container = new ContainerBuilder();
+    $cache_factory->setContainer($container);
+
+    $builtin_default_backend_factory = $this->getMock('\Drupal\Core\Cache\CacheFactoryInterface');
+    $container->set('cache.backend.database', $builtin_default_backend_factory);
+
+    $render_bin = $this->getMock('\Drupal\Core\Cache\CacheBackendInterface');
+    $builtin_default_backend_factory->expects($this->once())
+      ->method('get')
+      ->with('render')
+      ->will($this->returnValue($render_bin));
+
+    $actual_bin = $cache_factory->get('render');
+    $this->assertSame($render_bin, $actual_bin);
+  }
+
+  /**
+   * Test that the cache factory falls back to customized default service.
+   *
+   * @covers ::__construct
+   * @covers ::get
+   */
+  public function testCacheFactoryWithCustomizedDefaultBackend() {
+    $settings = new Settings(array(
+      'cache' => array(
+        'default' => 'cache.backend.custom',
+      ),
+    ));
+    $cache_factory = new CacheFactory($settings);
+
+    $container = new ContainerBuilder();
+    $cache_factory->setContainer($container);
+
+    $custom_default_backend_factory = $this->getMock('\Drupal\Core\Cache\CacheFactoryInterface');
+    $container->set('cache.backend.custom', $custom_default_backend_factory);
+
+    $render_bin = $this->getMock('\Drupal\Core\Cache\CacheBackendInterface');
+    $custom_default_backend_factory->expects($this->once())
+      ->method('get')
+      ->with('render')
+      ->will($this->returnValue($render_bin));
+
+    $actual_bin = $cache_factory->get('render');
+    $this->assertSame($render_bin, $actual_bin);
+  }
+
+  /**
+   * Test that the cache factory picks the correct per-bin service.
+   *
+   * @covers ::__construct
+   * @covers ::get
+   */
+  public function testCacheFactoryWithSpecifiedPerBinBackend() {
+    $settings = new Settings(array(
+      'cache' => array(
+        'bins' => array(
+          'render' => 'cache.backend.custom',
+        ),
+      ),
+    ));
+    $cache_factory = new CacheFactory($settings);
+
+    $container = new ContainerBuilder();
+    $cache_factory->setContainer($container);
+
+    $custom_render_backend_factory = $this->getMock('\Drupal\Core\Cache\CacheFactoryInterface');
+    $container->set('cache.backend.custom', $custom_render_backend_factory);
+
+    $render_bin = $this->getMock('\Drupal\Core\Cache\CacheBackendInterface');
+    $custom_render_backend_factory->expects($this->once())
+      ->method('get')
+      ->with('render')
+      ->will($this->returnValue($render_bin));
+
+    $actual_bin = $cache_factory->get('render');
+    $this->assertSame($render_bin, $actual_bin);
+  }
+
+}