Struct Clock

tstest/clock.go:88–119

Clock is a testing clock that advances every time its Now method is called, beginning at its start time. If no start time is specified using ClockBuilder, an arbitrary start time will be selected when the Clock is created and can be retrieved by calling Clock.Start().

// ClockBuilder, an arbitrary start time will be selected when the Clock is
// created and can be retrieved by calling Clock.Start().
type Clock struct {
	// start is the first value returned by Now. It must not be modified after
	// init is called.
	start time.Time

	// realTimeClock, if not nil, indicates that the Clock shall move forward
	// according to realTimeClock + the accumulated calls to Advance. This can
	// make writing tests easier that require some control over the clock but do
	// not need exact control over the clock. While step can also be used for
	// this purpose, it is harder to control how quickly time moves using step.
	realTimeClock tstime.Clock

	initOnce sync.Once
	mu       sync.Mutex

	// step is how much to advance with each Now call.
	step time.Duration
	// present is the last value returned by Now (and will be returned again by
	// PeekNow).
	present time.Time
	// realTime is the time from realTimeClock corresponding to the current
	// value of present.
	realTime time.Time
	// skipStep indicates that the next call to Now should not add step to
	// present. This occurs after initialization and after Advance.
	skipStep bool
	// timerChannelSize is the buffer size to use for channels created by
	// NewTimer and NewTicker.
	timerChannelSize int

	events eventManager
}

func (c *Clock) init() {
	c.initOnce.Do(func() {