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// Copyright 2018 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.
// This is a "No Compile Test" suite.
// http://dev.chromium.org/developers/testing/no-compile-tests
#include <type_traits>
#include "base/observer_list.h"
namespace base {
#if defined(NCTEST_CHECKED_OBSERVER_USING_UNCHECKED_LIST) // [r"fatal error: static_assert failed due to requirement '!std::is_base_of<base::CheckedObserver, Observer>::value' \"CheckedObserver classes must not use ObserverList<T>::Unchecked.\""]
void WontCompile() {
struct Observer : public CheckedObserver {
void OnObserve() {}
};
ObserverList<Observer>::Unchecked list;
for (auto& observer: list)
observer.OnObserve();
}
#elif defined(NCTEST_UNCHECKED_OBSERVER_USING_CHECKED_LIST) // [r"fatal error: static_assert failed due to requirement 'std::is_base_of<base::CheckedObserver, UncheckedObserver>::value' \"Observers should inherit from base::CheckedObserver. Use ObserverList<T>::Unchecked to observe with raw pointers.\""]
void WontCompile() {
struct UncheckedObserver {
void OnObserve() {}
};
ObserverList<UncheckedObserver> list;
for (auto& observer: list)
observer.OnObserve();
}
#endif
} // namespace base