| // Copyright 2019 The Chromium Authors |
| // 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. |
