def setUp(self):
self.framer = InverterModbusFramer(ServerDecoder())
class ModbusTest(unittest.TestCase):
def setUp(self):
self.framer = InverterModbusFramer(ServerDecoder())
def testInverterClientInstantiation(self):
client = InverterModbusClient()
self.assertIsNotNone(client)
self.assertIsInstance(client.framer, InverterModbusFramer)
def testInverterFramerBufferEmpty(self):
self.assertFalse(self.framer.isFrameReady())
self.assertFalse(self.framer.checkFrame())
def testFramerLineFeedInMessage(self):
message = '\x0a\x01\x03\x02\x00\x0d\x79\x81\x0d'
self.framer.addToFrame(message)
self.assertTrue(self.framer.isFrameReady())
self.assertTrue(self.framer.checkFrame())
result = self.framer.getFrame()
self.assertEqual(message[2:-3], result)
def testFramerIncompleteMessage(self):
message = '\x0a\x01\x03'
self.framer.addToFrame(message)
self.assertTrue(self.framer.isFrameReady())
self.assertFalse(self.framer.checkFrame())
def testFramerMessageTooShort(self):
message = '\x0a\x0d'
self.framer.addToFrame(message)
self.assertTrue(self.framer.isFrameReady())
self.assertFalse(self.framer.checkFrame())
def testInverterFramerDecoding(self):
message = '\x0a\x01\x03\x02\x00\xcb\xf9\xd3\x0d'
self.framer.addToFrame(message)
self.assertTrue(self.framer.isFrameReady())
self.assertTrue(self.framer.checkFrame())
result = self.framer.getFrame()
self.assertEqual(message[2:-3], result)
self.framer.advanceFrame()
self.assertFalse(self.framer.isFrameReady())
self.assertFalse(self.framer.checkFrame())
self.assertEqual('', self.framer.getFrame())
def testInverterFramerDecodeTwice(self):
message = '\x0a\x01\x03\x02\x00\xcb\xf9\xd3\x0d'
self.framer.addToFrame(message)
self.assertTrue(self.framer.isFrameReady())
self.assertTrue(self.framer.checkFrame())
result = self.framer.getFrame()
self.assertEqual(message[2:-3], result)
self.framer.advanceFrame()
self.framer.addToFrame(message)
self.assertTrue(self.framer.isFrameReady())
self.assertTrue(self.framer.checkFrame())
def testInverterFramerEncoding(self):
old_encode = ModbusRequest.encode
ModbusRequest.encode = lambda self: ''
message = ModbusRequest()
message.unit_id = 0xff
message.function_code = 0x01
expected = '\x0a\xff\x01\x81\x80\x0d'
actual = self.framer.buildPacket(message)
ModbusRequest.encode = old_encode
self.assertEqual(expected, actual)