public void ReserveTellsYouHowLongToWait()
{
var clock = new FakeSystemClock();
var limiter = new Limiter(new Limit(10), 50, clock);
var initiallyAllowed = limiter.AllowN(clock.UtcNow, 50);
var thenNotAllowed1 = limiter.Allow();
var reserveOne = limiter.Reserve();
var delayOne = reserveOne.Delay();
var reserveTwoMore = limiter.Reserve(clock.UtcNow, 2);
var delayTwoMore = reserveTwoMore.Delay();
clock.Advance(TimeSpan.FromMilliseconds(450));
var reserveAlreadyAvailable = limiter.Reserve();
var delayAlreadyAvailable = reserveAlreadyAvailable.Delay();
var reserveHalfAvailable = limiter.Reserve();
var delayHalfAvailable = reserveHalfAvailable.Delay();
Assert.True(initiallyAllowed);
Assert.False(thenNotAllowed1);
Assert.True(reserveOne.Ok);
Assert.Equal(TimeSpan.FromMilliseconds(100), delayOne);
Assert.True(reserveTwoMore.Ok);
Assert.Equal(TimeSpan.FromMilliseconds(300), delayTwoMore);
Assert.True(reserveAlreadyAvailable.Ok);
Assert.Equal(TimeSpan.Zero, delayAlreadyAvailable);
Assert.True(reserveHalfAvailable.Ok);
Assert.Equal(TimeSpan.FromMilliseconds(50), delayHalfAvailable);
}
/// <summary>
/// When gets an item and gets to decide how long that item should wait.
/// </summary>
/// <param name="item">The item.</param>
/// <returns>TimeSpan.</returns>
public TimeSpan ItemDelay(TItem item)
{
return(_limiter.Reserve().Delay());
}
protected override async Task OnGetAsync(CancellationToken cancellationToken)
{
var delay = _limiter.Reserve().Delay();
await Task.Delay(delay, cancellationToken);
}