29 lines
1.1 KiB
C++
29 lines
1.1 KiB
C++
// Copyright 2019 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <windows.h>
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#include "base/debug/gdi_debug_util_win.h"
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#include "base/win/scoped_hdc.h"
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#include "testing/gtest/include/gtest/gtest.h"
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// GDI handles can occasionally come out of nowhere on the shared table, so
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// when writing the tests below, make sure you do differential snapshots to
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// count handles.
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TEST(GdiDebugUtilWin, GdiHandleCountsCreateDC) {
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base::debug::GdiHandleCounts handle_counts_start =
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base::debug::GetGDIHandleCountsInCurrentProcessForTesting();
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base::win::ScopedGetDC dc(nullptr);
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ASSERT_TRUE(static_cast<HDC>(dc));
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base::debug::GdiHandleCounts handle_counts_now =
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base::debug::GetGDIHandleCountsInCurrentProcessForTesting();
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EXPECT_EQ(1, handle_counts_now.dcs - handle_counts_start.dcs);
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EXPECT_EQ(
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1, handle_counts_now.total_tracked - handle_counts_start.total_tracked);
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}
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// TODO(robliao): Create tests for other types once we figure out how often GDI
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// updates the handle table.
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