Put mocked notification class into notifications app

notifications/tests/MockedNotifications.php

@@ -0,0 +1,45 @@
+<?php
+
+/**
+ * App
+ *
+ * @link http://www.egroupware.org
+ * @author Nathan Gray
+ * @package
+ * @copyright (c) 2017  Nathan Gray
+ * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
+ */
+
+namespace Egroupware\Notifications;
+
+
+/**
+ * Used for testing notifications by allowing the change tracking and
+ * notification process to be run normally, we just interrupt the actual sending
+ * before the notification is passed off to the individual chains for delivery.
+ *
+ * In your test you can define a callback and set it staticly, then pass
+ * MockedNotifications::class on to the Tracker class:
+ * <code>
+ *		$callback = function() use ($expected) {
+ *			$test->assertContains($expected,$this->message_plain);
+ *		};
+ * 		MockedNotifications::set_callback($callback);
+ *		$this->bo->tracking = new \<app>_tracking($this->bo, MockedNotifications::class);
+ * </code>
+ *
+ * Everything will run as normal except notifications won't be sent, and you can
+ * put assertions into the callback for what you expect of the notification(s).
+ */
+class MockedNotifications extends \notifications
+{
+	static $send_callback;
+	public static function set_callback(\Closure $send)
+	{
+		static::$send_callback = $send;
+	}
+	public function send()
+	{
+		return static::$send_callback->call($this);
+	}
+}