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# Copyright 2012 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# Timer test: check time consistency when jumping between images
#
import time
DELAY = 5
ERROR_MARGIN = 0.5
def test(helper):
helper.wait_output("idle task started")
helper.ec_command("sysinfo")
copy = helper.wait_output("Copy:\s+(?P<c>\S+)", use_re=True)["c"]
if copy != "RO":
helper.ec_command("sysjump ro")
helper.wait_output("idle task started")
helper.ec_command("gettime")
ec_start_time = helper.wait_output("Time: 0x[0-9a-f]* = (?P<t>[\d\.]+) s",
use_re=True)["t"]
time.sleep(DELAY)
helper.ec_command("sysjump a")
helper.wait_output("idle task started")
helper.ec_command("gettime")
ec_end_time = helper.wait_output("Time: 0x[0-9a-f]* = (?P<t>[\d\.]+) s",
use_re=True)["t"]
time_diff = float(ec_end_time) - float(ec_start_time)
return time_diff >= DELAY and time_diff <= DELAY + ERROR_MARGIN
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