public void GetUtcNowAccuracyIsMilliseconds()
{
SystemClockMillisecondsAccuracy.GetUtcNow();
var nowActual = SystemClockMillisecondsAccuracy.GetUtcNow();
var nowExpected = DateTimeOffset.UtcNow;
var diff = nowExpected - nowActual;
var ms = Math.Abs(diff.TotalMilliseconds);
Assert.True(ms < 1.0);
}
public void GetUtcNowHasNonZeroMilliseconds()
{
var sw = Stopwatch.StartNew();
var startTime = SystemClockMillisecondsAccuracy.GetUtcNow();
SpinWait.SpinUntil(() => sw.ElapsedMilliseconds > 1, 2);
var endTime = SystemClockMillisecondsAccuracy.GetUtcNow();
Assert.True(sw.ElapsedMilliseconds > 0);
var duration = endTime - startTime;
Assert.NotEqual(0.0, duration.TotalMilliseconds);
}