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package serial
import (
"os"
"testing"
)
const (
// socat -d -d pty,raw,echo=0 pty,raw,echo=0
pty1 = "/dev/ttys009"
pty2 = "/dev/ttys010"
)
func TestReadWrite(t *testing.T) {
checkPty(t)
config1 := Config{Address: pty1}
port1, err := Open(&config1)
if err != nil {
t.Fatal(err)
}
defer port1.Close()
config2 := Config{
Address: pty2,
BaudRate: 57600,
DataBits: 7,
Parity: "N",
StopBits: 2,
}
port2, err := Open(&config2)
if err != nil {
t.Fatal(err)
}
defer port2.Close()
message := "test serial"
n, err := port1.Write([]byte(message))
if err != nil {
t.Fatal(err)
}
if n != len(message) {
t.Fatalf("unexpected write length %v", n)
}
var buf [16]byte
n, err = port2.Read(buf[:])
if err != nil {
t.Fatal(err)
}
if string(buf[:n]) != message {
t.Fatalf("unexpected response %q (len: %d)", buf[:n], n)
}
}
func checkPty(t *testing.T) {
for _, p := range [...]string{pty1, pty2} {
if _, err := os.Stat(p); err != nil {
t.Skipf("%v does not exist", p)
}
}
}
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