// Copyright 2017 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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#ifndef BASE_TEST_BIND_TEST_UTIL_H_
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#define BASE_TEST_BIND_TEST_UTIL_H_
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#include "base/bind.h"
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namespace base {
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namespace internal {
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template <typename F, typename Signature>
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struct BindLambdaHelper;
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template <typename F, typename R, typename... Args>
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struct BindLambdaHelper<F, R(Args...)> {
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static R Run(const std::decay_t<F>& f, Args... args) {
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return f(std::forward<Args>(args)...);
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}
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};
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} // namespace internal
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// A variant of Bind() that can bind capturing lambdas for testing.
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// This doesn't support extra arguments binding as the lambda itself can do.
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template <typename F>
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decltype(auto) BindLambdaForTesting(F&& f) {
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using Signature = internal::ExtractCallableRunType<std::decay_t<F>>;
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return BindRepeating(&internal::BindLambdaHelper<F, Signature>::Run,
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std::forward<F>(f));
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}
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} // namespace base
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#endif // BASE_TEST_BIND_TEST_UTIL_H_
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