systohc.py

import datetime
import pytest

from .util.util import get_ansible, get_variable

testinfra_runner, testinfra_hosts = get_ansible()


def test_systohc_sync(host):
    """Check if the system clock is synchronized with the hardware clock."""
    # Use the utility function to retrieve the systohc variable
    systohc = get_variable(host, "systohc")

    # If systohc is true, then verify synchronization
    if not systohc:
        pytest.skip("systohc is not True")

    # Get the current system time
    system_time = datetime.datetime.strptime(
        host.check_output("date '+%Y-%m-%d %H:%M:%S'"), "%Y-%m-%d %H:%M:%S"
    )

    # Get the current hardware clock time
    hwclock_time_with_tz = datetime.datetime.strptime(
        host.check_output("sudo hwclock --show --date='%Y-%m-%d %H:%M:%S.%f%z'"),
        "%Y-%m-%d %H:%M:%S.%f%z",
    )

    # Convert the hardware clock time to an offset-naive datetime
    hwclock_time = hwclock_time_with_tz.replace(tzinfo=None)

    # Compare the system time and hardware clock time (considering a possible 3-second difference)
    time_difference = abs(system_time - hwclock_time)

    assert time_difference.total_seconds() < 3