base/win/scoped_handle_unittest.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/win/scoped_handle.h"
   6
   7 #include "testing/gtest/include/gtest/gtest.h"
   8
   9 TEST(ScopedHandleTest, ScopedHandle) {
  10   // Any illegal error code will do. We just need to test that it is preserved
  11   // by ScopedHandle to avoid bug 528394.
  12   const DWORD magic_error = 0x12345678;
  13
  14   HANDLE handle = ::CreateMutex(nullptr, FALSE, nullptr);
  15   // Call SetLastError after creating the handle.
  16   ::SetLastError(magic_error);
  17   base::win::ScopedHandle handle_holder(handle);
  18   EXPECT_EQ(magic_error, ::GetLastError());
  19
  20   // Create a new handle and then set LastError again.
  21   handle = ::CreateMutex(nullptr, FALSE, nullptr);
  22   ::SetLastError(magic_error);
  23   handle_holder.Set(handle);
  24   EXPECT_EQ(magic_error, ::GetLastError());
  25
  26   // Create a new handle and then set LastError again.
  27   handle = ::CreateMutex(nullptr, FALSE, nullptr);
  28   base::win::ScopedHandle handle_source(handle);
  29   ::SetLastError(magic_error);
  30   handle_holder = std::move(handle_source);
  31   EXPECT_EQ(magic_error, ::GetLastError());
  32 }