11c8b4d5fSStephen Warren# Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. 21c8b4d5fSStephen Warren# 31c8b4d5fSStephen Warren# SPDX-License-Identifier: GPL-2.0 41c8b4d5fSStephen Warren 51c8b4d5fSStephen Warrenimport pytest 61c8b4d5fSStephen Warrenimport time 71c8b4d5fSStephen Warren 81c8b4d5fSStephen Warrendef test_sleep(u_boot_console): 9e8debf39SStephen Warren """Test the sleep command, and validate that it sleeps for approximately 10e8debf39SStephen Warren the correct amount of time.""" 111c8b4d5fSStephen Warren 121c8b4d5fSStephen Warren # 3s isn't too long, but is enough to cross a few second boundaries. 131c8b4d5fSStephen Warren sleep_time = 3 141c8b4d5fSStephen Warren tstart = time.time() 151c8b4d5fSStephen Warren u_boot_console.run_command('sleep %d' % sleep_time) 161c8b4d5fSStephen Warren tend = time.time() 171c8b4d5fSStephen Warren elapsed = tend - tstart 18*89ab8410SStephen Warren assert elapsed >= sleep_time 19*89ab8410SStephen Warren if not u_boot_console.config.gdbserver: 201c8b4d5fSStephen Warren # 0.25s margin is hopefully enough to account for any system overhead. 21*89ab8410SStephen Warren assert elapsed < (sleep_time + 0.25) 22