// Copyright (C) 2019 Matthew Pitropov, Joshua Whitley
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#include "velodyne_driver/time_conversion.hpp"
#include <ros/time.h>
#include <gtest/gtest.h>

TEST(TimeConversion, BytesToTimestamp)
{
  ros::Time::init();
  ros::Time ros_stamp = ros::Time::now();

  // get the seconds past the hour and multiply by 1million to convert to microseconds
  // divide nanoseconds by 1000 to convert to microseconds
  uint32_t since_the_hour = ((ros_stamp.sec % 3600) * 1000000) + ros_stamp.nsec / 1000;

  uint8_t native_format[4];
  native_format[0] = 0xFF & since_the_hour;
  native_format[1] = 0xFF & (((uint32_t)since_the_hour) >> 8);
  native_format[2] = 0xFF & (((uint32_t)since_the_hour) >> 16);
  native_format[3] = 0xFF & (((uint32_t)since_the_hour) >> 24);

  ros::Time ros_stamp_converted = rosTimeFromGpsTimestamp(native_format);

  ASSERT_EQ(ros_stamp_converted.sec, ros_stamp.sec);
  ASSERT_NEAR(ros_stamp_converted.nsec, ros_stamp.nsec, 1000);
}

int main(int argc, char **argv)
{
  ::testing::InitGoogleTest(&argc, argv);
  int ret = RUN_ALL_TESTS();
  return ret;
}