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/scoped_native_library.h" 6 #if defined(OS_WIN) 7 #include "base/files/file_path.h" 8 #endif 9 10 #include "testing/gtest/include/gtest/gtest.h" 11 12 namespace base { 13 14 // Tests whether or not a function pointer retrieved via ScopedNativeLibrary 15 // is available only in a scope. 16 TEST(ScopedNativeLibrary, Basic) { 17 #if defined(OS_WIN) 18 // Get the pointer to DirectDrawCreate() from "ddraw.dll" and verify it 19 // is valid only in this scope. 20 // FreeLibrary() doesn't actually unload a DLL until its reference count 21 // becomes zero, i.e. this function pointer is still valid if the DLL used 22 // in this test is also used by another part of this executable. 23 // So, this test uses "ddraw.dll", which is not used by Chrome at all but 24 // installed on all versions of Windows. 25 FARPROC test_function; 26 { 27 FilePath path(GetNativeLibraryName(L"ddraw")); 28 ScopedNativeLibrary library(path); 29 test_function = reinterpret_cast<FARPROC>( 30 library.GetFunctionPointer("DirectDrawCreate")); 31 EXPECT_EQ(0, IsBadCodePtr(test_function)); 32 } 33 EXPECT_NE(0, IsBadCodePtr(test_function)); 34 #endif 35 } 36 37 } // namespace base 38
