package syncx import ( "sync" "testing" ) func TestDoneChanClose(t *testing.T) { doneChan := NewDoneChan() for i := 0; i < 5; i++ { doneChan.Close() } } func TestDoneChanDone(t *testing.T) { var waitGroup sync.WaitGroup doneChan := NewDoneChan() waitGroup.Add(1) go func() { <-doneChan.Done() waitGroup.Done() }() for i := 0; i < 5; i++ { doneChan.Close() } waitGroup.Wait() }