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