responder_test_interface.h

// Copyright 2025 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
 
#pragma once
 
#include "pw_bytes/span.h"
#include "pw_function/function.h"
#include "pw_i2c/address.h"
#include "pw_i2c/responder.h"
#include "pw_result/result.h"
#include "pw_status/status.h"
#include "pw_unit_test/framework.h"
 
namespace pw::i2c::test {
 
 
class ResponderEventsForTest : public ResponderEvents {
 public:
  bool OnStartRead() override { return on_start_read_cb(); }
 
  bool OnStartWrite() override { return on_start_write_cb(); }
 
  bool OnWrite(ConstByteSpan data) override { return on_write_cb(data); }
 
  Result<ConstByteSpan> OnRead() override { return on_read_cb(); }
 
  bool OnStop() override { return on_stop_cb(); }
 
  void SetOnStartReadCb(pw::Function<bool()>&& cb) {
    on_start_read_cb = std::move(cb);
  }
 
  void SetOnStartWriteCb(pw::Function<bool()>&& cb) {
    on_start_write_cb = std::move(cb);
  }
 
  void SetOnWriteCb(pw::Function<bool(ConstByteSpan)>&& cb) {
    on_write_cb = std::move(cb);
  }
 
  void SetOnReadCb(pw::Function<Result<ConstByteSpan>()>&& cb) {
    on_read_cb = std::move(cb);
  }
 
  void SetOnStopCb(pw::Function<bool()>&& cb) { on_stop_cb = std::move(cb); }
 
 private:
  pw::Function<bool()> on_start_read_cb;
 
  pw::Function<bool()> on_start_write_cb;
 
  pw::Function<bool(ConstByteSpan)> on_write_cb;
 
  pw::Function<Result<ConstByteSpan>()> on_read_cb;
 
  pw::Function<bool()> on_stop_cb;
};
 
class NativeResponderTestInterface : public ::testing::Test {
 public:
  virtual Responder& GetResponder() = 0;
 
  virtual Status SimulateInitiatorWrite(ConstByteSpan write_data,
                                        bool send_stop) = 0;
 
  virtual Status SimulateInitiatorRead(ByteSpan buffer, bool send_stop) = 0;
};
 
 
}  // namespace pw::i2c::test