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rtuclient_test.go
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rtuclient_test.go
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package modbus
import (
"reflect"
"testing"
)
func TestRTUClientProvider_encodeRTUFrame(t *testing.T) {
type args struct {
slaveID byte
pdu ProtocolDataUnit
}
tests := []struct {
name string
rtu *protocolFrame
args args
want []byte
wantErr bool
}{
{
"RTU encode",
&protocolFrame{make([]byte, 0, rtuAduMaxSize)},
args{0x01, ProtocolDataUnit{0x03, []byte{0x01, 0x02, 0x03, 0x04, 0x05}}},
[]byte{0x01, 0x03, 0x01, 0x02, 0x03, 0x04, 0x05, 0x05, 0x48},
false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := tt.rtu.encodeRTUFrame(tt.args.slaveID, tt.args.pdu)
if (err != nil) != tt.wantErr {
t.Errorf("RTUClientProvider.encode() error = %v, wantErr %v", err, tt.wantErr)
return
}
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("RTUClientProvider.encode() = %v, want %v", got, tt.want)
}
})
}
}
func TestRTUClientProvider_decodeRTUFrame(t *testing.T) {
type args struct {
adu []byte
}
tests := []struct {
name string
args args
slaveID uint8
pdu []byte
wantErr bool
}{
{
"RTU decode",
args{[]byte{0x01, 0x03, 0x01, 0x02, 0x03, 0x04, 0x05, 0x05, 0x48}},
0x01,
[]byte{0x03, 0x01, 0x02, 0x03, 0x04, 0x05},
false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
gotslaveID, gotpdu, err := decodeRTUFrame(tt.args.adu)
if (err != nil) != tt.wantErr {
t.Errorf("RTUClientProvider.decode() error = %v, wantErr %v", err, tt.wantErr)
return
}
if gotslaveID != tt.slaveID {
t.Errorf("RTUClientProvider.decode() gotslaveID = %v, want %v", gotslaveID, tt.slaveID)
}
if !reflect.DeepEqual(gotpdu, tt.pdu) {
t.Errorf("RTUClientProvider.decode() gotpdu = %v, want %v", gotpdu, tt.pdu)
}
})
}
}
func Test_verify(t *testing.T) {
type args struct {
reqSlaveID uint8
rspSlaveID uint8
reqPDU ProtocolDataUnit
rspPDU ProtocolDataUnit
}
tests := []struct {
name string
args args
wantErr bool
}{
{
"serial verify same",
args{
5,
5,
ProtocolDataUnit{10, []byte{1, 2, 3, 4}},
ProtocolDataUnit{10, []byte{1, 2, 3, 4}},
},
false,
},
{
"serial verify slaveID different",
args{
4,
5,
ProtocolDataUnit{10, []byte{1, 2, 3, 4}},
ProtocolDataUnit{10, []byte{1, 2, 3, 4}},
},
true,
},
{
"serial verify functionCode different",
args{
5,
5,
ProtocolDataUnit{11, []byte{1, 2, 3, 4}},
ProtocolDataUnit{10, []byte{1, 2, 3, 4}},
},
true,
},
{
"serial verify pdu data zero length",
args{
5,
5,
ProtocolDataUnit{10, []byte{}},
ProtocolDataUnit{10, []byte{}},
},
true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
err := verify(tt.args.reqSlaveID, tt.args.rspSlaveID, tt.args.reqPDU, tt.args.rspPDU)
if (err != nil) != tt.wantErr {
t.Errorf("verify() error = %v, wantErr %v", err, tt.wantErr)
}
})
}
}
func Test_calculateResponseLength(t *testing.T) {
type args struct {
adu []byte
}
tests := []struct {
name string
args args
want int
}{
{"1", args{[]byte{4, 1, 0, 0xA, 0, 0xD, 0xDD, 0x98}}, 7},
{"2", args{[]byte{4, 2, 0, 0xA, 0, 0xD, 0x99, 0x98}}, 7},
{"3", args{[]byte{1, 3, 0, 0, 0, 2, 0xC4, 0xB}}, 9},
{"4", args{[]byte{0x11, 5, 0, 0xAC, 0xFF, 0, 0x4E, 0x8B}}, 8},
{"5", args{[]byte{0x11, 6, 0, 1, 0, 3, 0x9A, 0x9B}}, 8},
{"6", args{[]byte{0x11, 0xF, 0, 0x13, 0, 0xA, 2, 0xCD, 1, 0xBF, 0xB}}, 8},
{"7", args{[]byte{0x11, 0x10, 0, 1, 0, 2, 4, 0, 0xA, 1, 2, 0xC6, 0xF0}}, 8},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := calculateResponseLength(tt.args.adu); got != tt.want {
t.Errorf("calculateResponseLength() = %v, want %v", got, tt.want)
}
})
}
}
func BenchmarkRTUClientProvider_encodeRTUFrame(b *testing.B) {
p := &protocolFrame{make([]byte, 0, rtuAduMaxSize)}
pdu := ProtocolDataUnit{
1,
[]byte{2, 3, 4, 5, 6, 7, 8, 9},
}
for i := 0; i < b.N; i++ {
_, err := p.encodeRTUFrame(10, pdu)
if err != nil {
b.Fatal(err)
}
}
}
func BenchmarkRTUClientProvider_decodeRTUFrame(b *testing.B) {
adu := []byte{0x01, 0x10, 0x8A, 0x00, 0x00, 0x03, 0xAA, 0x10}
for i := 0; i < b.N; i++ {
_, _, err := decodeRTUFrame(adu)
if err != nil {
b.Fatal(err)
}
}
}