Implements AeroPeek of Windows 7..

base/scoped_native_library_unittest.cc

+// Copyright (c) 2010 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 "testing/gtest/include/gtest/gtest.h"
+
+// Tests whether or not a function pointer retrieved via ScopedNativeLibrary
+// is available only in a scope.
+TEST(ScopedNativeLibrary, Basic) {
+#if defined(OS_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. this 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.
+  FARPROC test_function;
+  {
+    FilePath path(base::GetNativeLibraryName(L"ddraw"));
+    base::ScopedNativeLibrary library(path);
+    test_function = reinterpret_cast<FARPROC>(
+        library.GetFunctionPointer("DirectDrawCreate"));
+    EXPECT_EQ(0, IsBadCodePtr(test_function));
+  }
+  EXPECT_NE(0, IsBadCodePtr(test_function));
+#endif
+}