11c8b4d5fSStephen Warren# SPDX-License-Identifier: GPL-2.0 2*83d290c5STom Rini# Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. 31c8b4d5fSStephen Warren 41c8b4d5fSStephen Warrenimport pytest 51c8b4d5fSStephen Warrenimport time 61c8b4d5fSStephen Warren 7040f5f10SMichal Simek""" 8040f5f10SMichal SimekNote: This test doesn't rely on boardenv_* configuration values but they can 9040f5f10SMichal Simekchange test behavior. 10040f5f10SMichal Simek 11040f5f10SMichal Simek# Setup env__sleep_accurate to False if time is not accurate on your platform 12040f5f10SMichal Simekenv__sleep_accurate = False 13040f5f10SMichal Simek 14040f5f10SMichal Simek""" 15040f5f10SMichal Simek 161c8b4d5fSStephen Warrendef test_sleep(u_boot_console): 17e8debf39SStephen Warren """Test the sleep command, and validate that it sleeps for approximately 18e8debf39SStephen Warren the correct amount of time.""" 191c8b4d5fSStephen Warren 20040f5f10SMichal Simek sleep_skip = u_boot_console.config.env.get('env__sleep_accurate', True) 21040f5f10SMichal Simek if not sleep_skip: 22040f5f10SMichal Simek pytest.skip('sleep is not accurate') 23040f5f10SMichal Simek 242b2c6e51STom Rini if u_boot_console.config.buildconfig.get('config_cmd_misc', 'n') != 'y': 252b2c6e51STom Rini pytest.skip('sleep command not supported') 261c8b4d5fSStephen Warren # 3s isn't too long, but is enough to cross a few second boundaries. 271c8b4d5fSStephen Warren sleep_time = 3 281c8b4d5fSStephen Warren tstart = time.time() 291c8b4d5fSStephen Warren u_boot_console.run_command('sleep %d' % sleep_time) 301c8b4d5fSStephen Warren tend = time.time() 311c8b4d5fSStephen Warren elapsed = tend - tstart 326c7c3dccSHeinrich Schuchardt assert elapsed >= (sleep_time - 0.01) 3389ab8410SStephen Warren if not u_boot_console.config.gdbserver: 341c8b4d5fSStephen Warren # 0.25s margin is hopefully enough to account for any system overhead. 3589ab8410SStephen Warren assert elapsed < (sleep_time + 0.25) 36