def test_tcp_client_recv(self): """ Test the tcp client receive method""" client = ModbusTcpClient() self.assertRaises(ConnectionException, lambda: client.receive(1024)) client.socket = MockSocket() self.assertEqual('', client.receive(0)) self.assertEqual('\x00'*4, client.receive(4))
def test_tcp_client_send(self): """ Test the tcp client send method""" client = ModbusTcpClient() self.assertRaises(ConnectionException, lambda: client.send(None)) client.socket = MockSocket() self.assertEqual(0, client.send(None)) self.assertEqual(4, client.send('1234'))
def test_tcp_client_recv(self): """ Test the tcp client receive method""" client = ModbusTcpClient() self.assertRaises(ConnectionException, lambda: client.receive(1024)) client.socket = MockSocket() self.assertEqual('', client.receive(0)) self.assertEqual('\x00' * 4, client.receive(4))
def test_basic_sync_tcp_client(self): """ Test the basic methods for the tcp sync client""" # receive/send client = ModbusTcpClient() client.socket = MockSocket() self.assertEqual(0, client.send(None)) self.assertEqual(1, client.send('\x00')) self.assertEqual('\x00', client.receive(1)) # connect/disconnect self.assertTrue(client.connect()) client.close() # already closed socket client.socket = False client.close() self.assertEqual("127.0.0.1:502", str(client))