Initial import of unittests using GTest/GMock.

test/unittests/unittests.cc

+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <cstdlib>
+#include <cstring>
+#include <memory>
+
+#include "include/libplatform/libplatform.h"
+#include "include/v8.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+int main(int argc, char** argv) {
+  testing::InitGoogleMock(&argc, argv);
+  std::auto_ptr<v8::Platform> platform((v8::platform::CreateDefaultPlatform()));
+  v8::V8::InitializePlatform(platform.get());
+  v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
+  int result = 127;
+  if (v8::V8::Initialize()) {
+    result = RUN_ALL_TESTS();
+    v8::V8::Dispose();
+  }
+  v8::V8::ShutdownPlatform();
+  return result;
+}