2016-01-15 18:15:31 +00:00
|
|
|
# Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
|
|
|
|
|
#
|
|
|
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
|
|
|
|
|
|
|
|
import pytest
|
|
|
|
|
import time
|
|
|
|
|
|
|
|
|
|
def test_sleep(u_boot_console):
|
2016-01-26 20:41:30 +00:00
|
|
|
"""Test the sleep command, and validate that it sleeps for approximately
|
|
|
|
|
the correct amount of time."""
|
2016-01-15 18:15:31 +00:00
|
|
|
|
|
|
|
|
# 3s isn't too long, but is enough to cross a few second boundaries.
|
|
|
|
|
sleep_time = 3
|
|
|
|
|
tstart = time.time()
|
|
|
|
|
u_boot_console.run_command('sleep %d' % sleep_time)
|
|
|
|
|
tend = time.time()
|
|
|
|
|
elapsed = tend - tstart
|
|
|
|
|
delta_to_expected = abs(elapsed - sleep_time)
|
|
|
|
|
# 0.25s margin is hopefully enough to account for any system overhead.
|
|
|
|
|
assert delta_to_expected < 0.25
|
