mirror of https://github.com/status-im/nim-eth.git
72 lines
2.6 KiB
Nim
72 lines
2.6 KiB
Nim
# Copyright (c) 2021 Status Research & Development GmbH
|
|
# Licensed and distributed under either of
|
|
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
|
|
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
|
|
# at your option. This file may not be copied, modified, or distributed except according to those terms.
|
|
|
|
{.used.}
|
|
|
|
import
|
|
chronos,
|
|
unittest2,
|
|
../../eth/utp/clock_drift_calculator
|
|
|
|
suite "Clock drift calculator":
|
|
|
|
test "Initial clock drift should be 0":
|
|
let currentTime = Moment.now()
|
|
let calculator = ClockDriftCalculator.init(currentTime)
|
|
|
|
check:
|
|
calculator.clockDrift == 0
|
|
|
|
test "Adding samples should not update averages if 5s did not pass":
|
|
let currentTime = Moment.now()
|
|
var calculator = ClockDriftCalculator.init(currentTime)
|
|
|
|
calculator.addSample(10, currentTime + seconds(1))
|
|
calculator.addSample(10, currentTime + seconds(2))
|
|
|
|
check:
|
|
calculator.clockDrift == 0
|
|
calculator.lastClockDrift == 0
|
|
|
|
test "Clock drift should be calculated in relation to first sample":
|
|
let currentTime = Moment.now()
|
|
var calculator = ClockDriftCalculator.init(currentTime)
|
|
|
|
# first sample which will be treated as a base sample
|
|
calculator.addSample(10, currentTime + seconds(3))
|
|
|
|
# second sample in the first inteval it will be treated in relation to first one
|
|
# so correct first drift should be: (50 - 10) / 2 == 20
|
|
calculator.addSample(50, currentTime + seconds(6))
|
|
|
|
check:
|
|
calculator.clockDrift == 2
|
|
calculator.lastClockDrift == 20
|
|
|
|
test "Clock drift should properly calcuated when clock drifts to two sides":
|
|
let currentTime = Moment.now()
|
|
var calculator1 = ClockDriftCalculator.init(currentTime)
|
|
var calculator2 = ClockDriftCalculator.init(currentTime)
|
|
|
|
|
|
# first sample which will be treated as a base sample
|
|
calculator1.addSample(10, currentTime + seconds(3))
|
|
|
|
# second sample in the first inteval it will be treated in relation to first one
|
|
# so correct first drift should be: (50 - 10) / 2 == 20
|
|
calculator1.addSample(50, currentTime + seconds(6))
|
|
|
|
# first sample which will be treated as a base sample
|
|
calculator2.addSample(50, currentTime + seconds(3))
|
|
|
|
# second sample in the first inteval it will be treated in relation to first one
|
|
# so correct first drift should be: (10 - 50) / 2 == -20
|
|
calculator2.addSample(10, currentTime + seconds(6))
|
|
|
|
check:
|
|
calculator1.clockDrift == -calculator2.clockDrift
|
|
calculator1.lastClockDrift == -calculator2.lastClockDrift
|