tstime

type Clock interface {
	// Now returns the current time, as in time.Now.
	Now() time.Time
	// NewTimer returns a timer whose notion of the current time is controlled
	// by this Clock. It follows the semantics of time.NewTimer as closely as
	// possible but is adapted to return an interface, so the channel needs to
	// be returned as well.
	NewTimer(d time.Duration) (TimerController, <-chan time.Time)
	// NewTicker returns a ticker whose notion of the current time is controlled
	// by this Clock. It follows the semantics of time.NewTicker as closely as
	// possible but is adapted to return an interface, so the channel needs to
	// be returned as well.
	NewTicker(d time.Duration) (TickerController, <-chan time.Time)
	// AfterFunc returns a ticker whose notion of the current time is controlled
	// by this Clock. When the ticker expires, it will call the provided func.
	// It follows the semantics of time.AfterFunc.
	AfterFunc(d time.Duration, f func()) TimerController
	// Since returns the time elapsed since t.
	// It follows the semantics of time.Since.
	Since(t time.Time) time.Duration
}

type DefaultClock struct{ Clock }

type StdClock struct{}

type TickerController interface {
	// Reset follows the same semantics as with time.Ticker.Reset.
	Reset(d time.Duration)
	// Stop follows the same semantics as with time.Ticker.Stop.
	Stop()
}

type TimerController interface {
	// Reset follows the same semantics as with time.Timer.Reset.
	Reset(d time.Duration) bool
	// Stop follows the same semantics as with time.Timer.Stop.
	Stop() bool
}