v := make(chan int, 10)
	v <- 1
	v <- 1
	v <- 1

	if want, got := 3, lenChan_ssa(v); got != want {
		t.Errorf("expected len(chan) = %d, got %d", want, got)
	}
}

func testLenNilChan(t *testing.T) {

	var v chan int
	if want, got := 0, lenChan_ssa(v); got != want {
		t.Errorf("expected len(nil) = %d, got %d", want, got)
	}
}

func testCapChan(t *testing.T) {