public void GetUtcNowAccuracyIsSeconds()
{
var systemClock = new SystemClockSecondsAccuracy();
var nowActual = systemClock.UtcNow;
var nowExpected = DateTimeOffset.UtcNow;
var diff = nowExpected - nowActual;
var seconds = Math.Abs(diff.TotalSeconds);
Assert.True(seconds < 1.0);
}
public void UtcNowHasZeroMilliseconds()
{
var systemClock = new SystemClockSecondsAccuracy();
var sw = Stopwatch.StartNew();
var startTime = systemClock.UtcNow;
Assert.Equal(0, startTime.Millisecond);
SpinWait.SpinUntil(() => sw.ElapsedMilliseconds > 1, 2);
var endTime = systemClock.UtcNow;
Assert.Equal(0, endTime.Millisecond);
Assert.True(sw.ElapsedMilliseconds > 0);
var duration = endTime - startTime;
Assert.Equal(0.0, duration.TotalMilliseconds);
}