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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 test
import (
"testing"
"github.com/goburrow/modbus"
)
func ClientTestReadCoils(t *testing.T, client modbus.Client) {
// Read discrete outputs 20-38:
address := uint16(0x0013)
quantity := uint16(0x0013)
results, err := client.ReadCoils(address, quantity)
if err != nil {
t.Fatal(err)
}
AssertEquals(t, 3, len(results))
}
func ClientTestReadDiscreteInputs(t *testing.T, client modbus.Client) {
// Read discrete inputs 197-218
address := uint16(0x00C4)
quantity := uint16(0x0016)
results, err := client.ReadDiscreteInputs(address, quantity)
if err != nil {
t.Fatal(err)
}
AssertEquals(t, 3, len(results))
}
func ClientTestReadHoldingRegisters(t *testing.T, client modbus.Client) {
// Read registers 108-110
address := uint16(0x006B)
quantity := uint16(0x0003)
results, err := client.ReadHoldingRegisters(address, quantity)
if err != nil {
t.Fatal(err)
}
AssertEquals(t, 6, len(results))
}
func ClientTestReadInputRegisters(t *testing.T, client modbus.Client) {
// Read input register 9
address := uint16(0x0008)
quantity := uint16(0x0001)
results, err := client.ReadInputRegisters(address, quantity)
if err != nil {
t.Fatal(err)
}
AssertEquals(t, 2, len(results))
}
func ClientTestWriteSingleCoil(t *testing.T, client modbus.Client) {
// Write coil 173 ON
address := uint16(0x00AC)
value := uint16(0xFF00)
results, err := client.WriteSingleCoil(address, value)
if err != nil {
t.Fatal(err)
}
AssertEquals(t, 2, len(results))
}
func ClientTestWriteSingleRegister(t *testing.T, client modbus.Client) {
// Write register 2 to 00 03 hex
address := uint16(0x0001)
value := uint16(0x0003)
results, err := client.WriteSingleRegister(address, value)
if err != nil {
t.Fatal(err)
}
AssertEquals(t, 2, len(results))
}
func ClientTestWriteMultipleCoils(t *testing.T, client modbus.Client) {
// Write a series of 10 coils starting at coil 20
address := uint16(0x0013)
quantity := uint16(0x000A)
values := []byte{0xCD, 0x01}
results, err := client.WriteMultipleCoils(address, quantity, values)
if err != nil {
t.Fatal(err)
}
AssertEquals(t, 2, len(results))
}
func ClientTestWriteMultipleRegisters(t *testing.T, client modbus.Client) {
// Write two registers starting at 2 to 00 0A and 01 02 hex
address := uint16(0x0001)
quantity := uint16(0x0002)
values := []byte{0x00, 0x0A, 0x01, 0x02}
results, err := client.WriteMultipleRegisters(address, quantity, values)
if err != nil {
t.Fatal(err)
}
AssertEquals(t, 2, len(results))
}
func ClientTestMaskWriteRegisters(t *testing.T, client modbus.Client) {
// Mask write to register 5
address := uint16(0x0004)
andMask := uint16(0x00F2)
orMask := uint16(0x0025)
results, err := client.MaskWriteRegister(address, andMask, orMask)
if err != nil {
t.Fatal(err)
}
AssertEquals(t, 4, len(results))
}
func ClientTestReadWriteMultipleRegisters(t *testing.T, client modbus.Client) {
// read six registers starting at register 4, and to write three registers starting at register 15
address := uint16(0x0003)
quantity := uint16(0x0006)
writeAddress := uint16(0x000E)
writeQuantity := uint16(0x0003)
values := []byte{0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF}
results, err := client.ReadWriteMultipleRegisters(address, quantity, writeAddress, writeQuantity, values)
if err != nil {
t.Fatal(err)
}
AssertEquals(t, 12, len(results))
}
func ClientTestReadFIFOQueue(t *testing.T, client modbus.Client) {
// Read queue starting at the pointer register 1246
address := uint16(0x04DE)
results, err := client.ReadFIFOQueue(address)
// Server not implemented
if err != nil {
AssertEquals(t, "modbus: exception '1' (illegal function), function '152'", err.Error())
} else {
AssertEquals(t, 0, len(results))
}
}
func ClientTestAll(t *testing.T, client modbus.Client) {
ClientTestReadCoils(t, client)
ClientTestReadDiscreteInputs(t, client)
ClientTestReadHoldingRegisters(t, client)
ClientTestReadInputRegisters(t, client)
ClientTestWriteSingleCoil(t, client)
ClientTestWriteSingleRegister(t, client)
ClientTestWriteMultipleCoils(t, client)
ClientTestWriteMultipleRegisters(t, client)
ClientTestMaskWriteRegisters(t, client)
ClientTestReadWriteMultipleRegisters(t, client)
ClientTestReadFIFOQueue(t, client)
}
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