components/autofill_assistant/browser/mock_run_once_callback.h

// 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.

#ifndef COMPONENTS_AUTOFILL_ASSISTANT_BROWSER_MOCK_RUN_ONCE_CALLBACK_H_
#define COMPONENTS_AUTOFILL_ASSISTANT_BROWSER_MOCK_RUN_ONCE_CALLBACK_H_

#include "testing/gmock/include/gmock/gmock.h"

namespace autofill_assistant {

// Templates for calling base::OnceCallback from gmock actions.
//
// To work around the fact that OnceCallback can't be copied, the method
// to be mocked needs to take the callback as a reference. To do it without
// changing the original interface, follow this pattern:
//
//   void DoSomething(..., base::OnceCallback<void(bool)> callback) override {
//     OnDoSomething(..., callback);
//   }
//   MOCK_METHOD2(OnDoSomething,
//       void(..., base::OnceCallback<void(bool)>& callback));
//
//

ACTION_TEMPLATE(RunOnceCallback,
                HAS_1_TEMPLATE_PARAMS(int, k),
                AND_1_VALUE_PARAMS(p0)) {
  return std::move(std::get<k>(args)).Run(p0);
}

ACTION_TEMPLATE(RunOnceCallback,
                HAS_1_TEMPLATE_PARAMS(int, k),
                AND_2_VALUE_PARAMS(p0, p1)) {
  return std::move(std::get<k>(args)).Run(p0, p1);
}

ACTION_TEMPLATE(RunOnceCallback,
                HAS_1_TEMPLATE_PARAMS(int, k),
                AND_3_VALUE_PARAMS(p0, p1, p2)) {
  return std::move(std::get<k>(args)).Run(p0, p1, p2);
}

}  // namespace autofill_assistant

#endif  // COMPONENTS_AUTOFILL_ASSISTANT_BROWSER_MOCK_RUN_ONCE_CALLBACK_H_