Refactor common unit test code.

src/test/run-all-unittests.cc

Index: src/test/run-all-unittests.cc
diff --git a/src/test/run-all-unittests.cc b/src/test/run-all-unittests.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8c361ddc3683eeb4af4f432b1454f540de41fbf9
--- /dev/null
+++ b/src/test/run-all-unittests.cc
@@ -0,0 +1,45 @@
+// 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 "include/libplatform/libplatform.h"
+#include "include/v8.h"
+#include "src/base/compiler-specific.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+namespace {
+
+class DefaultPlatformEnvironment FINAL : public ::testing::Environment {
+ public:
+  DefaultPlatformEnvironment() : platform_(NULL) {}
+  ~DefaultPlatformEnvironment() {}
+
+  virtual void SetUp() OVERRIDE {
+    EXPECT_EQ(NULL, platform_);
+    platform_ = v8::platform::CreateDefaultPlatform();
+    ASSERT_TRUE(platform_ != NULL);
+    v8::V8::InitializePlatform(platform_);
+    ASSERT_TRUE(v8::V8::Initialize());
+  }
+
+  virtual void TearDown() OVERRIDE {
+    ASSERT_TRUE(platform_ != NULL);
+    v8::V8::Dispose();
+    v8::V8::ShutdownPlatform();
+    delete platform_;
+    platform_ = NULL;
+  }
+
+ private:
+  v8::Platform* platform_;
+};
+
+}  // namespace
+
+
+int main(int argc, char** argv) {
+  testing::InitGoogleMock(&argc, argv);
+  testing::AddGlobalTestEnvironment(new DefaultPlatformEnvironment);
+  v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
+  return RUN_ALL_TESTS();
+}