1# SPDX-License-Identifier: GPL-2.0 2# Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. 3 4import pytest 5import time 6 7""" 8Note: This test doesn't rely on boardenv_* configuration values but they can 9change test behavior. 10 11# Setup env__sleep_accurate to False if time is not accurate on your platform 12env__sleep_accurate = False 13 14""" 15 16def test_sleep(u_boot_console): 17 """Test the sleep command, and validate that it sleeps for approximately 18 the correct amount of time.""" 19 20 sleep_skip = u_boot_console.config.env.get('env__sleep_accurate', True) 21 if not sleep_skip: 22 pytest.skip('sleep is not accurate') 23 24 if u_boot_console.config.buildconfig.get('config_cmd_misc', 'n') != 'y': 25 pytest.skip('sleep command not supported') 26 # 3s isn't too long, but is enough to cross a few second boundaries. 27 sleep_time = 3 28 tstart = time.time() 29 u_boot_console.run_command('sleep %d' % sleep_time) 30 tend = time.time() 31 elapsed = tend - tstart 32 assert elapsed >= (sleep_time - 0.01) 33 if not u_boot_console.config.gdbserver: 34 # 0.25s margin is hopefully enough to account for any system overhead. 35 assert elapsed < (sleep_time + 0.25) 36