Disable side-effects in filter engine tests

test/BaseJsTest.h

Index: test/BaseJsTest.h
===================================================================
--- a/test/BaseJsTest.h
+++ b/test/BaseJsTest.h
@@ -1,13 +1,14 @@
 #ifndef MOCKS_H
 #define MOCKS_H
 
 #include <AdblockPlus.h>
 #include <gtest/gtest.h>
+#include "../src/Thread.h"
 
 class ThrowingErrorCallback : public AdblockPlus::ErrorCallback
 {
 public:
   void operator()(const std::string& message)
   {
     throw std::runtime_error("Unexpected error: " + message);
   }
@@ -45,16 +46,63 @@ class ThrowingFileSystem : public Adbloc
 class ThrowingWebRequest : public AdblockPlus::WebRequest
 {
   AdblockPlus::ServerResponse GET(const std::string& url, const AdblockPlus::HeaderList& requestHeaders) const
   {
     throw std::runtime_error("Unexpected GET: " + url);
   }
 };
 
+class LazyFileSystem : public AdblockPlus::FileSystem
+{
+  std::tr1::shared_ptr<std::istream> Read(const std::string& path) const
+  {
+    while (true)
+      AdblockPlus::Sleep(100000);
+    return std::tr1::shared_ptr<std::istream>();
+  }
+
+  void Write(const std::string& path,
+             std::tr1::shared_ptr<std::ostream> content)
+  {
+    while (true)
+      AdblockPlus::Sleep(100000);
+  }
+
+  void Move(const std::string& fromPath, const std::string& toPath)
+  {
+    while (true)
+      AdblockPlus::Sleep(100000);
+  }
+
+  void Remove(const std::string& path)
+  {
+    while (true)
+      AdblockPlus::Sleep(100000);
+  }
+
+  StatResult Stat(const std::string& path) const
+  {
+    while (true)
+      AdblockPlus::Sleep(100000);
+    return StatResult();
+  }
+};
+
+class LazyWebRequest : public AdblockPlus::WebRequest
+{
+  AdblockPlus::ServerResponse GET(const std::string& url, const AdblockPlus::HeaderList& requestHeaders) const
+  {
+    while (true)
+      AdblockPlus::Sleep(100000);
+    return AdblockPlus::ServerResponse();
+  }
+};
+
+
 class BaseJsTest : public ::testing::Test
 {
 protected:
   AdblockPlus::JsEnginePtr jsEngine;
 
   virtual void SetUp()
   {
     jsEngine = AdblockPlus::JsEngine::New();