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// Copyright 2014 Quoc-Viet Nguyen. All rights reserved.
// This software may be modified and distributed under the terms
// of the BSD license. See the LICENSE file for details.
package modbus
import (
"bytes"
"testing"
)
func TestASCIIEncoding(t *testing.T) {
encoder := asciiPackager{}
encoder.SlaveId = 17
pdu := ProtocolDataUnit{}
pdu.FunctionCode = 3
pdu.Data = []byte{0, 107, 0, 3}
adu, err := encoder.Encode(&pdu)
if err != nil {
t.Fatal(err)
}
expected := []byte(":1103006B00037E\r\n")
if !bytes.Equal(expected, adu) {
t.Fatalf("adu actual: %v, expected %v", adu, expected)
}
}
func TestASCIIDecoding(t *testing.T) {
decoder := asciiPackager{}
decoder.SlaveId = 247
adu := []byte(":F7031389000A60\r\n")
pdu, err := decoder.Decode(adu)
if err != nil {
t.Fatal(err)
}
if 3 != pdu.FunctionCode {
t.Fatalf("Function code: expected %v, actual %v", 15, pdu.FunctionCode)
}
expected := []byte{0x13, 0x89, 0, 0x0A}
if !bytes.Equal(expected, pdu.Data) {
t.Fatalf("Data: expected %v, actual %v", expected, pdu.Data)
}
}
func BenchmarkASCIIEncoder(b *testing.B) {
encoder := asciiPackager{
SlaveId: 10,
}
pdu := ProtocolDataUnit{
FunctionCode: 1,
Data: []byte{2, 3, 4, 5, 6, 7, 8, 9},
}
for i := 0; i < b.N; i++ {
_, err := encoder.Encode(&pdu)
if err != nil {
b.Fatal(err)
}
}
}
func BenchmarkASCIIDecoder(b *testing.B) {
decoder := asciiPackager{
SlaveId: 10,
}
adu := []byte(":F7031389000A60\r\n")
for i := 0; i < b.N; i++ {
_, err := decoder.Decode(adu)
if err != nil {
b.Fatal(err)
}
}
}
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