fix: support Go 1.23+ timer & ticker channel behavior

[spikecurtis]

fixes #22

Changes mock ticker and timer implementations based on channels to match Go 1.23+. c.f. https://go.dev/wiki/Go123Timer

1. Channels for tickers and timers are now unbuffered.
2. Channels reads will block after Stop() returns.
3. We use goroutines to write to the unbuffered channels. In order to avoid leaking go routines, when the test ends, any uncompleted channel writes are abandoned. This means that reads from the channels will block after the test exits. This is usually what you want, but is a small difference in behavior from before, where we wrote to a buffered channel, and so reads could complete after the test completed.

[mafredri]

Nice, looks good for the most part. Had a suggestion for how to deal with the behavior difference, and one concern about cleanup.

[mafredri]

Up to you whether you go with the proposal or not, if it even works (I may have overlooked something).

One last thing, I think it'd be good to call out the difference in behavior on public methods so it's visible in Go docs, potentially also in README if you find a good spot.

[spikecurtis]

Merge activity

• Oct 30, 11:29 AM UTC: A user started a stack merge that includes this pull request via Graphite.
• Oct 30, 11:29 AM UTC: @spikecurtis merged this pull request with Graphite.