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49 lines
1.7 KiB
49 lines
1.7 KiB
4 months ago
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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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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 "base/scoped_native_library.h"
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#include "build/build_config.h"
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#include "testing/gtest/include/gtest/gtest.h"
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#if defined(OS_WIN)
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#include "base/files/file_path.h"
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#include "base/strings/utf_string_conversions.h"
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#endif
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namespace base {
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// Tests whether or not a function pointer retrieved via ScopedNativeLibrary
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// is available only in a scope.
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TEST(ScopedNativeLibrary, Basic) {
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#if defined(OS_WIN)
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// Get the pointer to DirectDrawCreate() from "ddraw.dll" and verify it
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// is valid only in this scope.
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// FreeLibrary() doesn't actually unload a DLL until its reference count
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// becomes zero, i.e. function pointer is still valid if the DLL used
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// in this test is also used by another part of this executable.
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// So, this test uses "ddraw.dll", which is not used by Chrome at all but
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// installed on all versions of Windows.
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const char kFunctionName[] = "DirectDrawCreate";
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NativeLibrary native_library;
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{
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FilePath path(FilePath::FromUTF8Unsafe(GetNativeLibraryName("ddraw")));
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native_library = LoadNativeLibrary(path, nullptr);
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ScopedNativeLibrary library(native_library);
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EXPECT_TRUE(library.is_valid());
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EXPECT_EQ(native_library, library.get());
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FARPROC test_function =
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reinterpret_cast<FARPROC>(library.GetFunctionPointer(kFunctionName));
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EXPECT_EQ(0, IsBadCodePtr(test_function));
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EXPECT_EQ(
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GetFunctionPointerFromNativeLibrary(native_library, kFunctionName),
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test_function);
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}
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EXPECT_FALSE(
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GetFunctionPointerFromNativeLibrary(native_library, kFunctionName));
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#endif
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}
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} // namespace base
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