Issue 5506 - Fix notification test

test/Notification.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 62 matching lines @@
         return;
       }
       ServerResponse serverResponse;
       serverResponse.status = IWebRequest::NS_OK;
       serverResponse.responseStatus = 200;
       serverResponse.responseText = responseText;
       getCallback(serverResponse);
     }
   };
 
+
+  // To run this test one needs to set INITIAL_DELAY to about 2000 msec
+  // in notification.js.
   class NotificationMockWebRequestTest : public BaseJsTest
   {
   protected:
     bool isNotificationCallbackCalled;
     void SetUp()
     {
       isNotificationCallbackCalled = false;
       const char* responseJsonText = "{"
         "\"notifications\": [{"
           "\"id\": \"some id\","
@@ skipping 92 matching lines @@
 TEST_F(NotificationTest, Links)
 {
   AddNotification("{ id: 'id', links: ['link1', 'link2'] }");
   auto notification = PeekNotification();
   ASSERT_TRUE(notification);
   std::vector<std::string> notificationLinks = notification->GetLinks();
   ASSERT_EQ(2u, notificationLinks.size());
   EXPECT_EQ("link1", notificationLinks[0]);
   EXPECT_EQ("link2", notificationLinks[1]);
 }