def test_modbus_send_hex_invalid_string(self):
with captured_output() as (out, err):
with self.assertRaises(SystemExit) as cm:
modbus.argument_parser([self._serial_port, 'send', '0xZZ'])
self.assertEquals(cm.exception.code, 1)
output = str(out.getvalue().strip())
self.assertTrue(output.startswith('Incorrect send argument'))
def test_modbus_send_hex_spaces(self):
with captured_output() as (out, err):
modbus.argument_parser(
[self._serial_port, 'send', '01 06 00 01 03 00'])
output = out.getvalue().strip()
self.assertEqual(
output, 'TX 8 Bytes: 01 06 00 01 03 00 D8 FA\n'
'RX 8 Bytes: 01 06 00 01 03 00 D8 FA')
def test_modbus_send_hex_comma(self):
with captured_output() as (out, err):
modbus.argument_parser([
self._serial_port, 'send', '0x01, 0x06, 0x00, 0x01, 0x02, 0x00'
])
output = out.getvalue().strip()
self.assertEqual(
output, 'TX 8 Bytes: 01 06 00 01 02 00 D9 6A\n'
'RX 8 Bytes: 01 06 00 01 02 00 D9 6A')
def test_modbus_send_ascii_no_append_crc(self):
with captured_output() as (out, err):
modbus.argument_parser([
self._serial_port, 'send', ':010600010100D99a',
'--no-append-crc'
])
output = out.getvalue().strip()
self.assertEqual(
output, 'TX 8 Bytes: 01 06 00 01 01 00 D9 9A\n'
'RX 8 Bytes: 01 06 00 01 01 00 D9 9A')
def test_modbus_send_wrong_serial_port(self):
with captured_output() as (out, err):
serial_port = 'WRONG'
with self.assertRaises(SystemExit) as cm:
modbus.argument_parser([
serial_port, 'send', '0x01, 0x06, 0x00, 0x01, 0x02, 0x00'
])
self.assertEquals(cm.exception.code, 1)
output = out.getvalue().strip()
self.assertEquals(output, '')
output = err.getvalue().strip()
self.assertEquals(
output,
'Error: Cannot open serial port: {}'.format(serial_port))