}

func TestRaceChanCloseSend(t *testing.T) {
	compl := make(chan bool, 1)
	c := make(chan int, 10)
	go func() {
		close(c)
		compl <- true
	}()
	c <- 0
	<-compl
}

func TestNoRaceChanMutex(t *testing.T) {
	done := make(chan struct{})
	mtx := make(chan struct{}, 1)
	data := 0
	_ = data
	go func() {
		mtx <- struct{}{}
		data = 42
		<-mtx
		done <- struct{}{}
	}()