func singleThreadedWait(capacity float64, rl RateLimiter, res doorman.Resource, numLoops int) (time.Duration, error) {
ctx := context.Background()
res.Capacity() <- capacity
start := time.Now()
for i := 0; i < numLoops; i++ {
err := rl.Wait(ctx)
if err != nil {
return 0, err
}
}
return time.Since(start), nil
}
