Add a method to check whether ABP is fully initialised

test/FilterEngine.cpp

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2013 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 142 matching lines @@
   ASSERT_TRUE(match6);
   ASSERT_EQ(AdblockPlus::Filter::TYPE_BLOCKING, match6->GetType());
 
   AdblockPlus::FilterPtr match7 = filterEngine->Matches("http://example.org/tpbanner.gif", "IMAGE", "http://example.com/");
   ASSERT_TRUE(match7);
   ASSERT_EQ(AdblockPlus::Filter::TYPE_BLOCKING, match6->GetType());
 
   AdblockPlus::FilterPtr match8 = filterEngine->Matches("http://example.org/fpbanner.gif", "IMAGE", "http://example.com/");
   ASSERT_FALSE(match8);
 }
+
+TEST_F(FilterEngineTest, IsInitialized)
+{
+  ASSERT_FALSE(filterEngine->IsInitialized());
+  jsEngine->Evaluate("require('filterNotifier').FilterNotifier.triggerListeners('load')");
+  ASSERT_TRUE(filterEngine->IsInitialized());
+}