1# Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. 2# 3# SPDX-License-Identifier: GPL-2.0 4 5import pytest 6import time 7 8""" 9Note: This test doesn't rely on boardenv_* configuration values but they can 10change test behavior. 11 12# Setup env__sleep_accurate to False if time is not accurate on your platform 13env__sleep_accurate = False 14 15""" 16 17def test_sleep(u_boot_console): 18 """Test the sleep command, and validate that it sleeps for approximately 19 the correct amount of time.""" 20 21 sleep_skip = u_boot_console.config.env.get('env__sleep_accurate', True) 22 if not sleep_skip: 23 pytest.skip('sleep is not accurate') 24 25 if u_boot_console.config.buildconfig.get('config_cmd_misc', 'n') != 'y': 26 pytest.skip('sleep command not supported') 27 # 3s isn't too long, but is enough to cross a few second boundaries. 28 sleep_time = 3 29 tstart = time.time() 30 u_boot_console.run_command('sleep %d' % sleep_time) 31 tend = time.time() 32 elapsed = tend - tstart 33 assert elapsed >= (sleep_time - 0.01) 34 if not u_boot_console.config.gdbserver: 35 # 0.25s margin is hopefully enough to account for any system overhead. 36 assert elapsed < (sleep_time + 0.25) 37