adding hook manager test

apps/encryption/lib/hookmanager.php

@@ -40,7 +40,6 @@ class HookManager {
 					return false;
 				}
 				$this->hookInstances[] = $instance;
-				return true;
 			}
 
 		}

apps/encryption/tests/lib/HookManagerTest.php

+<?php
+/**
+ * @author Clark Tomlinson  <clark@owncloud.com>
+ * @since 3/31/15, 1:54 PM
+ * @copyright Copyright (c) 2015, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+namespace OCA\Encryption\Tests;
+
+
+use OCA\Encryption\HookManager;
+use Test\TestCase;
+
+class HookManagerTest extends TestCase {
+
+	/**
+	 * @var HookManager
+	 */
+	private static $instance;
+
+	/**
+	 *
+	 */
+	public function testRegisterHookWithArray() {
+		self::$instance->registerHook([
+			$this->getMockBuilder('OCA\Encryption\Hooks\Contracts\IHook')->disableOriginalConstructor()->getMock(),
+			$this->getMockBuilder('OCA\Encryption\Hooks\Contracts\IHook')->disableOriginalConstructor()->getMock(),
+			$this->getMock('NotIHook')
+		]);
+
+		$hookInstances = \Test_Helper::invokePrivate(self::$instance, 'hookInstances');
+		// Make sure our type checking works
+		$this->assertCount(2, $hookInstances);
+	}
+
+
+	/**
+	 *
+	 */
+	public static function setUpBeforeClass() {
+		parent::setUpBeforeClass();
+		// have to make instance static to preserve data between tests
+		self::$instance = new HookManager();
+
+	}
+
+	/**
+	 *
+	 */
+	public function testRegisterHooksWithInstance() {
+		$mock = $this->getMockBuilder('OCA\Encryption\Hooks\Contracts\IHook')->disableOriginalConstructor()->getMock();
+		self::$instance->registerHook($mock);
+
+		$hookInstances = \Test_Helper::invokePrivate(self::$instance, 'hookInstances');
+		$this->assertCount(3, $hookInstances);
+
+	}
+
+}