Issue #4688, #3595 - Web request use scheduled threads; unit tests terminate

test/FilterEngine.cpp

Index: test/FilterEngine.cpp
===================================================================
--- a/test/FilterEngine.cpp
+++ b/test/FilterEngine.cpp
@@ -36,17 +36,28 @@
   template<class FileSystem, class LogSystem>
   class FilterEngineTestGeneric : public BaseJsTest
   {
+
   protected:
     FilterEnginePtr filterEngine;
+    std::shared_ptr<LazyWebRequest> webRequest;
 
     void SetUp()
     {
       BaseJsTest::SetUp();
       jsEngine->SetFileSystem(AdblockPlus::FileSystemPtr(new FileSystem));
-      jsEngine->SetWebRequest(AdblockPlus::WebRequestPtr(new LazyWebRequest));
+      webRequest = std::make_shared<LazyWebRequest>();
+      jsEngine->SetWebRequest(webRequest);
       jsEngine->SetLogSystem(AdblockPlus::LogSystemPtr(new LogSystem));
       filterEngine = FilterEnginePtr(new AdblockPlus::FilterEngine(jsEngine));
     }
+
+    void TearDown()
+    {
+      if (webRequest)
+      {
+        webRequest->Cancel();
+      }
+    }
   };
 
   typedef FilterEngineTestGeneric<LazyFileSystem, AdblockPlus::DefaultLogSystem> FilterEngineTest;