c := make(chan int, 10)
	r := make(chan int, 10)
	go func() {
		r <- len(c)
	}()
	go func() {
		close(c)
		r <- 0
	}()
	<-r
	<-r
}

func TestNoRaceChanCloseCap(t *testing.T) {
	c := make(chan int, 10)
	r := make(chan int, 10)
	go func() {
		r <- cap(c)
	}()
	go func() {
		close(c)
		r <- 0
	}()
	<-r
	<-r
}