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TestModbusClientPort.cpp
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#include <gtest/gtest.h>
#include <ModbusClientPort.h>
#include "MockModbusPort.h"
using namespace testing;
using namespace Modbus;
typedef Modbus::StatusCode (ModbusClientPort::*ReadMethodPtr)(uint8_t, uint16_t, uint16_t, void*);
typedef Modbus::StatusCode (ModbusClientPort::*ReadMethodRegsPtr)(uint8_t, uint16_t, uint16_t, uint16_t*);
void testAlgorithmRead(ModbusClientPort *cp, ReadMethodPtr method,
uint8_t unit, uint8_t func, uint16_t offset, uint16_t count, uint8_t *outbuff, uint16_t szoutbuff)
{
MockModbusPort &port = *static_cast<MockModbusPort*>(cp->port());
//EXPECT_CALL(port, isOpen())
// .Times(1)
// .WillOnce(Return(true));
EXPECT_CALL(port, isOpen())
.WillRepeatedly(Return(true));
EXPECT_CALL(port, writeBuffer(unit,func,_,_))
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(port, write())
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(port, read())
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(port, readBuffer(_,_,_,_,_))
.Times(1)
.WillOnce(DoAll(SetArgReferee<0>(unit),
SetArgReferee<1>(func),
SetArrayArgument<2>(outbuff, outbuff + szoutbuff),
SetArgPointee<4>(szoutbuff),
Return(Status_Good)));
StatusCode s;
uint8_t buff[255];
s = (cp->*method)(unit, offset, count, buff);
EXPECT_EQ(s, Status_Good);
}
void testAlgorithmWriteSingleCoil(ModbusClientPort *cp,
uint8_t unit, uint16_t offset, bool value, uint8_t *outbuff, uint16_t szoutbuff)
{
MockModbusPort *port = static_cast<MockModbusPort*>(cp->port());
const uint8_t func = MBF_WRITE_SINGLE_COIL;
//EXPECT_CALL(*port, isOpen())
// .Times(1)
// .WillOnce(Return(true));
EXPECT_CALL(*port, writeBuffer(unit,func,_,_))
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(*port, write())
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(*port, read())
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(*port, readBuffer(_,_,_,_,_))
.Times(1)
.WillOnce(DoAll(SetArgReferee<0>(unit),
SetArgReferee<1>(func),
SetArrayArgument<2>(outbuff, outbuff + szoutbuff),
SetArgPointee<4>(szoutbuff),
Return(Status_Good)));
StatusCode s;
s = cp->writeSingleCoil(unit, offset, value);
EXPECT_EQ(s, Status_Good);
}
void testAlgorithmWriteSingleRegister(ModbusClientPort *cp,
uint8_t unit, uint16_t offset, uint16_t value, uint8_t *outbuff, uint16_t szoutbuff)
{
MockModbusPort *port = static_cast<MockModbusPort*>(cp->port());
const uint8_t func = MBF_WRITE_SINGLE_REGISTER;
//EXPECT_CALL(*port, isOpen())
// .Times(1)
// .WillOnce(Return(true));
EXPECT_CALL(*port, writeBuffer(unit,func,_,_))
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(*port, write())
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(*port, read())
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(*port, readBuffer(_,_,_,_,_))
.Times(1)
.WillOnce(DoAll(SetArgReferee<0>(unit),
SetArgReferee<1>(func),
SetArrayArgument<2>(outbuff, outbuff + szoutbuff),
SetArgPointee<4>(szoutbuff),
Return(Status_Good)));
StatusCode s;
s = cp->writeSingleRegister(unit, offset, value);
EXPECT_EQ(s, Status_Good);
}
void testAlgorithmReadExceptionStatus(ModbusClientPort *cp,
uint8_t unit, uint8_t *outbuff, uint16_t szoutbuff)
{
MockModbusPort *port = static_cast<MockModbusPort*>(cp->port());
const uint8_t func = MBF_READ_EXCEPTION_STATUS;
//EXPECT_CALL(*port, isOpen())
// .Times(1)
// .WillOnce(Return(true));
EXPECT_CALL(*port, writeBuffer(unit,func,_,_))
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(*port, write())
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(*port, read())
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(*port, readBuffer(_,_,_,_,_))
.Times(1)
.WillOnce(DoAll(SetArgReferee<0>(unit),
SetArgReferee<1>(func),
SetArrayArgument<2>(outbuff, outbuff + szoutbuff),
SetArgPointee<4>(szoutbuff),
Return(Status_Good)));
StatusCode s;
uint8_t buff[1];
s = cp->readExceptionStatus(unit, buff);
EXPECT_EQ(s, Status_Good);
}
typedef Modbus::StatusCode (ModbusClientPort::*WriteMethodPtr)(uint8_t, uint16_t, uint16_t, const void*);
typedef Modbus::StatusCode (ModbusClientPort::*WriteMethodRegsPtr)(uint8_t, uint16_t, uint16_t, const uint16_t*);
void testAlgorithmWrite(ModbusClientPort *cp, WriteMethodPtr method,
uint8_t unit, uint8_t func, uint16_t offset, uint16_t count, uint8_t *outbuff, uint16_t szoutbuff)
{
MockModbusPort *port = static_cast<MockModbusPort*>(cp->port());
//EXPECT_CALL(*port, isOpen())
// .Times(1)
// .WillOnce(Return(true));
EXPECT_CALL(*port, writeBuffer(unit,func,_,_))
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(*port, write())
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(*port, read())
.Times(1)
.WillOnce(Return(Status_Good));
EXPECT_CALL(*port, readBuffer(_,_,_,_,_))
.Times(1)
.WillOnce(DoAll(SetArgReferee<0>(unit),
SetArgReferee<1>(func),
SetArrayArgument<2>(outbuff, outbuff + szoutbuff),
SetArgPointee<4>(szoutbuff),
Return(Status_Good)));
StatusCode s;
uint8_t buff[255];
s = (cp->*method)(unit, offset, count, buff);
EXPECT_EQ(s, Status_Good);
}
TEST(ModbusClientPort, testAlgorithmBlocking)
{
// NiceMock for ignoring uninteresting calls
NiceMock<MockModbusPort> *port = new NiceMock<MockModbusPort>;
ModbusClientPort cp(port);
const uint8_t unit = 1;
const uint16_t offset = 0;
const uint16_t count = 16;
EXPECT_CALL(*port, isOpen())
.WillRepeatedly(Return(true));
//EXPECT_CALL(*port, open())
// .Times(1)
// .WillOnce(Return(Status_Good));
uint8_t buff01[1+count/MB_BYTE_SZ_BITES];
memset(&buff01[1], 0, sizeof(buff01)-1);
buff01[0] = count/MB_BYTE_SZ_BITES;
testAlgorithmRead(&cp, &ModbusClientPort::readCoils, unit, MBF_READ_COILS, offset, count, buff01, sizeof(buff01));
uint8_t buff02[1+count/MB_BYTE_SZ_BITES];
memset(&buff02[1], 0, sizeof(buff02)-1);
buff02[0] = count/MB_BYTE_SZ_BITES;
testAlgorithmRead(&cp, &ModbusClientPort::readDiscreteInputs, unit, MBF_READ_DISCRETE_INPUTS, offset, count, buff02, sizeof(buff02));
uint8_t buff03[1+count*MB_REGE_SZ_BYTES];
memset(&buff03[1], 0, sizeof(buff03)-1);
buff03[0] = count*MB_REGE_SZ_BYTES;
ReadMethodRegsPtr ptr03 = &ModbusClientPort::readHoldingRegisters;
testAlgorithmRead(&cp, reinterpret_cast<ReadMethodPtr>(ptr03), unit, MBF_READ_HOLDING_REGISTERS, offset, count, buff03, sizeof(buff03));
uint8_t buff04[1+count*MB_REGE_SZ_BYTES];
memset(&buff04[1], 0, sizeof(buff04)-1);
buff04[0] = count*MB_REGE_SZ_BYTES;
ReadMethodRegsPtr ptr04 = &ModbusClientPort::readInputRegisters;
testAlgorithmRead(&cp, reinterpret_cast<ReadMethodPtr>(ptr04), unit, MBF_READ_INPUT_REGISTERS, offset, count, buff04, sizeof(buff04));
uint8_t buff05[4];
memset(&buff05[0], 0, sizeof(buff05));
bool value05 = false;
testAlgorithmWriteSingleCoil(&cp, unit, offset, value05, buff05, sizeof(buff05));
uint8_t buff06[4];
memset(&buff06[0], 0, sizeof(buff06));
uint16_t value06 = 0;
testAlgorithmWriteSingleRegister(&cp, unit, offset, value06, buff06, sizeof(buff06));
uint8_t buff07[1];
buff07[0] = 0;
testAlgorithmReadExceptionStatus(&cp, unit, buff07, sizeof(buff07));
union { uint8_t buff15[4]; uint16_t buff15reg[2]; };
buff15reg[0] = offset;
buff15reg[1] = count;
testAlgorithmWrite(&cp, &ModbusClientPort::writeMultipleCoils, unit, MBF_WRITE_MULTIPLE_COILS, offset, count, buff15, sizeof(buff15));
union { uint8_t buff16[4]; uint16_t buff16reg[2]; };
buff16reg[0] = offset;
buff16reg[1] = count;
WriteMethodRegsPtr ptr16 = &ModbusClientPort::writeMultipleRegisters;
testAlgorithmWrite(&cp, reinterpret_cast<WriteMethodPtr>(ptr16), unit, MBF_WRITE_MULTIPLE_REGISTERS, offset, count, buff16, sizeof(buff16));
}