Issue #3593, #1197- fix isolate management

test/BaseJsTest.cpp

Index: test/BaseJsTest.cpp
diff --git a/test/BaseJsTest.cpp b/test/BaseJsTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..896d87b27fe1901aa647f056524dd1bc84917202
--- /dev/null
+++ b/test/BaseJsTest.cpp
@@ -0,0 +1,24 @@
+/*
+* This file is part of Adblock Plus <https://adblockplus.org/>,
+* Copyright (C) 2006-2016 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
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "BaseJsTest.h"
+
+AdblockPlus::JsEnginePtr CreateJsEngine(const AdblockPlus::AppInfo& appInfo)
+{
+  static AdblockPlus::ScopedV8IsolatePtr isolate = std::make_shared<AdblockPlus::ScopedV8Isolate>();
+  return AdblockPlus::JsEngine::New(appInfo, isolate);
+}