public async Task TestTimer1sInterval()
{
const int interval = 1;
var sut = new FixedStepTimer(TimeSpan.FromSeconds(interval));
var tickResults = new List <DateTime>();
var firstSignalTime = DateTime.MinValue;
sut.Tick += (s, e) =>
{
var signalTime = new DateTime(
1, 1, 1,
e.SignalTime.Hour,
e.SignalTime.Minute,
e.SignalTime.Second
);
if (e.TickCount == 1)
{
firstSignalTime = signalTime;
}
tickResults.Add(signalTime);
};
try
{
sut.Start(true);
await Task.Delay(TimeSpan.FromSeconds(10));
sut.Stop();
}
finally
{
sut.Close();
}
for (var i = 0; i < tickResults.Count; i++)
{
var want = firstSignalTime.AddSeconds(interval * i);
var got = tickResults[i];
var w = want.ToString("HH:mm:ss.fff");
var g = got.ToString("HH:mm:ss.fff");
Trace.WriteLine($"want:[{w}]\tgot:[{g}]");
Assert.AreEqual(want, got);
}
Assert.AreEqual(11, sut.TickCount);
}
public async Task TestTimer100msInterval()
{
const int interval = 100;
var sut = new FixedStepTimer(TimeSpan.FromMilliseconds(interval));
var tickResults = new List <DateTime>();
var firstSignalTime = DateTime.MinValue;
sut.Tick += (s, e) =>
{
var signalTime = new DateTime(
1, 1, 1,
e.SignalTime.Hour,
e.SignalTime.Minute,
e.SignalTime.Second,
e.SignalTime.Millisecond
);
if (e.TickCount == 1)
{
firstSignalTime = signalTime;
}
tickResults.Add(signalTime);
};
try
{
sut.Start(true);
await Task.Delay(TimeSpan.FromSeconds(1));
sut.Stop();
}
finally
{
sut.Close();
}
const int tolerance = 10;
for (var i = 0; i < tickResults.Count; i++)
{
var want = firstSignalTime.AddMilliseconds(interval * i);
var got = tickResults[i];
var w = want.ToString("HH:mm:ss.fff");
var g = got.ToString("HH:mm:ss.fff");
var diff = got - want;
Trace.WriteLine($"want:[{w}]\tgot:[{g}] {diff.Milliseconds}ms");
var wantMillisecond = want.Millisecond;
var gotMillisecond = got.Millisecond;
var lowerLimit = wantMillisecond;
var upperLimit = wantMillisecond + tolerance;
bool ok = lowerLimit <= gotMillisecond && gotMillisecond <= upperLimit;
if (!ok)
{
Assert.Fail($"want:[{w}]\tgot:[{g}]");
}
}
Assert.AreEqual(11, sut.TickCount);
}