ui/events/blink/prediction/input_predictor_unittest_helpers.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 UI_EVENTS_BLINK_PREDICTION_INPUT_PREDICTOR_UNITTEST_HELPERS_H_
#define UI_EVENTS_BLINK_PREDICTION_INPUT_PREDICTOR_UNITTEST_HELPERS_H_

#include "ui/events/blink/prediction/input_predictor.h"

#include "testing/gtest/include/gtest/gtest.h"
#include "ui/events/blink/blink_event_util.h"

namespace ui {

constexpr base::TimeDelta kExpectedDefaultTimeInterval =
    base::TimeDelta::FromMilliseconds(8);

// Base class for predictor unit tests
class InputPredictorTest : public testing::Test {
 public:
  InputPredictorTest();
  ~InputPredictorTest() override;

  static base::TimeTicks FromMilliseconds(int64_t ms) {
    return blink::WebInputEvent::GetStaticTimeStampForTests() +
           base::TimeDelta::FromMilliseconds(ms);
  }

  void ValidatePredictor(const std::vector<double>& x,
                         const std::vector<double>& y,
                         const std::vector<double>& timestamp_ms);

  void ValidatePredictor(const std::vector<double>& events_x,
                         const std::vector<double>& events_y,
                         const std::vector<double>& events_ts_ms,
                         const std::vector<double>& prediction_ts_ms,
                         const std::vector<double>& predicted_x,
                         const std::vector<double>& predicted_y);

 protected:
  static constexpr double kEpsilon = 0.1;

  std::unique_ptr<InputPredictor> predictor_;

  DISALLOW_COPY_AND_ASSIGN(InputPredictorTest);
};

}  // namespace ui

#endif  // UI_EVENTS_BLINK_PREDICTION_INPUT_PREDICTOR_UNITTEST_HELPERS_H_