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# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
import pytest
import time
"""
Note: This test doesn't rely on boardenv_* configuration values but they can
change test behavior.
# Setup env__sleep_accurate to False if time is not accurate on your platform
env__sleep_accurate = False
# Setup env__sleep_time time in seconds board is set to sleep
env__sleep_time = 3
# Setup env__sleep_margin set a margin for any system overhead
env__sleep_margin = 0.25
"""
def test_sleep(u_boot_console):
"""Test the sleep command, and validate that it sleeps for approximately
the correct amount of time."""
sleep_skip = u_boot_console.config.env.get('env__sleep_accurate', True)
if not sleep_skip:
pytest.skip('sleep is not accurate')
if u_boot_console.config.buildconfig.get('config_cmd_misc', 'n') != 'y':
pytest.skip('sleep command not supported')
# 3s isn't too long, but is enough to cross a few second boundaries.
sleep_time = u_boot_console.config.env.get('env__sleep_time', 3)
sleep_margin = u_boot_console.config.env.get('env__sleep_margin', 0.25)
tstart = time.time()
u_boot_console.run_command('sleep %d' % sleep_time)
tend = time.time()
elapsed = tend - tstart
assert elapsed >= (sleep_time - 0.01)
if not u_boot_console.config.gdbserver:
# margin is hopefully enough to account for any system overhead.
assert elapsed < (sleep_time + sleep_margin)
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