package readline import ( "testing" "time" ) func TestRace(t *testing.T) { rl, err := NewEx(&Config{}) if err != nil { t.Fatal(err) return } go func() { for range time.Tick(time.Millisecond) { rl.SetPrompt("hello") } }() go func() { time.Sleep(100 * time.Millisecond) rl.Close() }() rl.Readline() }