def setUp(self):
self.mbap1 = modbus_tcp.TcpMbap()
self.mbap1.transaction_id = 1
self.mbap1.protocol_id = 2
self.mbap1.length = 3
self.mbap1.unit_id = 4
def testCheckIdsWrongUnitId(self):
"""Test that the check ids fails when the transaction id is not Ok"""
mbap2 = modbus_tcp.TcpMbap()
mbap2.transaction_id = 1
mbap2.protocol_id = 2
mbap2.length = 10
mbap2.unit_id = 5
self.assertRaises(modbus_tcp.ModbusInvalidMbapError, self.mbap1.check_response, mbap2, 2)
def testCheckIds(self):
"""Test that the check ids pass with correct mbap"""
mbap2 = modbus_tcp.TcpMbap()
mbap2.transaction_id = 1
mbap2.protocol_id = 2
mbap2.length = 10
mbap2.unit_id = 4
self.mbap1.check_response(mbap2, 3-1)
def testUnpack(self):
"""Test that unpacking a mbap give the expected result"""
mbap2 = modbus_tcp.TcpMbap()
mbap2.unpack(self.mbap1.pack())
self.assertEqual(self.mbap1.transaction_id, mbap2.transaction_id)
self.assertEqual(self.mbap1.protocol_id, mbap2.protocol_id)
self.assertEqual(self.mbap1.length, mbap2.length)
self.assertEqual(self.mbap1.unit_id, mbap2.unit_id)
self.assertNotEqual(self.mbap1, mbap2)
def testClone(self):
"""test the clone function makes a copy of the object"""
mbap2 = modbus_tcp.TcpMbap()
mbap2.clone(self.mbap1)
self.assertEqual(self.mbap1.transaction_id, mbap2.transaction_id)
self.assertEqual(self.mbap1.protocol_id, mbap2.protocol_id)
self.assertEqual(self.mbap1.length, mbap2.length)
self.assertEqual(self.mbap1.unit_id, mbap2.unit_id)
self.assertNotEqual(self.mbap1, mbap2)
