1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/memory/scoped_native_library.h" 6 #if defined(OS_WIN) 7 #include "base/file_path.h" 8 #endif 9 10 #include "testing/gtest/include/gtest/gtest.h" 11 12 // Tests whether or not a function pointer retrieved via ScopedNativeLibrary 13 // is available only in a scope. 14 TEST(ScopedNativeLibrary, Basic) { 15 #if defined(OS_WIN) 16 // Get the pointer to DirectDrawCreate() from "ddraw.dll" and verify it 17 // is valid only in this scope. 18 // FreeLibrary() doesn't actually unload a DLL until its reference count 19 // becomes zero, i.e. this function pointer is still valid if the DLL used 20 // in this test is also used by another part of this executable. 21 // So, this test uses "ddraw.dll", which is not used by Chrome at all but 22 // installed on all versions of Windows. 23 FARPROC test_function; 24 { 25 FilePath path(base::GetNativeLibraryName(L"ddraw")); 26 base::ScopedNativeLibrary library(path); 27 test_function = reinterpret_cast<FARPROC>( 28 library.GetFunctionPointer("DirectDrawCreate")); 29 EXPECT_EQ(0, IsBadCodePtr(test_function)); 30 } 31 EXPECT_NE(0, IsBadCodePtr(test_function)); 32 #endif 33 } 34
