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- // Copyright 2019 The Chromium 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 <windows.h>
- #include "base/debug/gdi_debug_util_win.h"
- #include "base/win/scoped_hdc.h"
- #include "testing/gtest/include/gtest/gtest.h"
- // GDI handles can occasionally come out of nowhere on the shared table, so
- // when writing the tests below, make sure you do differential snapshots to
- // count handles.
- TEST(GdiDebugUtilWin, GdiHandleCountsCreateDC) {
- base::debug::GdiHandleCounts handle_counts_start =
- base::debug::GetGDIHandleCountsInCurrentProcessForTesting();
- base::win::ScopedGetDC dc(nullptr);
- ASSERT_TRUE(static_cast<HDC>(dc));
- base::debug::GdiHandleCounts handle_counts_now =
- base::debug::GetGDIHandleCountsInCurrentProcessForTesting();
- EXPECT_EQ(1, handle_counts_now.dcs - handle_counts_start.dcs);
- EXPECT_EQ(
- 1, handle_counts_now.total_tracked - handle_counts_start.total_tracked);
- }
- // TODO(robliao): Create tests for other types once we figure out how often GDI
- // updates the handle table.
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