[Golang] Mastering Concurrency Testing with `synctest` package
Introduction Testing concurrent code in Go can be challenging, especially when dealing with timing issues. One common problem is ensuring goroutines, Go’s lightweight threads, have finished their tasks. Traditional techniques often incorporate time.Sleep, but this can slow down tests or make them unreliable. Fortunately, Go 1.25 introduced the testing/synctest package into the standard library (after first being available experimentally in Go 1.24). It helps tackle these issues by providing a deterministic way to test concurrent code without the usual timing trade-offs. ...
