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from datetime import datetime
def test_hwclock_rate(command):
"""Test that the hardware clock rate is not too inaccurate."""
result = command.run_check("hwclock -c | head -n 3")
hw_time, sys_time, freq_offset_ppm, tick = result[-1].strip().split()
assert abs(int(freq_offset_ppm)) < 1000
def test_hwclock_value(command):
"""Test that the hardware clock has the correct time.
If the time is wrong, it is set once and tested again.
"""
def get_time():
result = command.run_check("hwclock --utc --show")[0].strip()
return datetime.strptime(result, "%Y-%m-%d %H:%M:%S.%f+0:00")
def set_time(time):
time = time.strftime("%Y-%m-%d %H:%M:%S.%f+0:00")
command.run_check(f'hwclock --utc --set --date "{time}"')
offset = abs((get_time() - datetime.utcnow()).total_seconds())
if offset > 60:
set_time(datetime.utcnow())
offset = abs((get_time() - datetime.utcnow()).total_seconds())
assert offset < 60
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