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#include "base/win32/win_api_test_helper.h"

#include "testing/gunit.h"

namespace mozc {
namespace {

constexpr DWORD kFakeWindowsVersion = 0x12345678;
DWORD WINAPI GetVersionHook() { return kFakeWindowsVersion; }

// Suppress optimizations to avoid a test failure with some environments.
// See b/236203361 for details.
#pragma optimize("", off)
TEST(WinAPITestHelperTest, BasicTest) {
  std::vector<WinAPITestHelper::HookRequest> requests;
  requests.push_back(DEFINE_HOOK("kernel32.dll", GetVersion, GetVersionHook));

  auto restore_info =
      WinAPITestHelper::DoHook(::GetModuleHandle(nullptr), requests);
  EXPECT_EQ(GetVersion(), kFakeWindowsVersion);

  WinAPITestHelper::RestoreHook(restore_info);
  restore_info = nullptr;

  EXPECT_NE(GetVersion(), kFakeWindowsVersion);
}
#pragma optimize("", on)

}  // namespace
}  // namespace mozc
