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39 lines
1.3 KiB
Plaintext
39 lines
1.3 KiB
Plaintext
// Copyright 2018 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// This is a "No Compile Test" suite.
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// http://dev.chromium.org/developers/testing/no-compile-tests
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#include <type_traits>
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#include "base/observer_list.h"
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namespace base {
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#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.\""]
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void WontCompile() {
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struct Observer : public CheckedObserver {
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void OnObserve() {}
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};
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ObserverList<Observer>::Unchecked list;
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for (auto& observer: list)
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observer.OnObserve();
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}
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#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.\""]
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void WontCompile() {
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struct UncheckedObserver {
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void OnObserve() {}
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};
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ObserverList<UncheckedObserver> list;
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for (auto& observer: list)
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observer.OnObserve();
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}
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#endif
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} // namespace base
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