export to json not working

[chinezbrun]

0.5.3 export to json was ok, starting with 0.6.0 give below error

pi@raspberrypi:~ $ mate3 read --host 192.168.0.150 -f json >mate3_060.json

2021-01-10 19:35:24.682 | WARNING  | mate3.api:_read_model:165 - Error reading field gateway_type - so setting as not implemented. Message: 3 is not a valid gateway_type
2021-01-10 19:35:24.701 | WARNING  | mate3.api:_read_model:165 - Error reading field inverter_operating_mode - so setting as not implemented. Message: 12 is not a valid inverter_operating_mode
Traceback (most recent call last):
  File "/home/pi/.local/bin/mate3", line 8, in <module>
    sys.exit(main())
  File "/home/pi/.local/lib/python3.7/site-packages/mate3/main.py", line 199, in main
    read(client, args)
  File "/home/pi/.local/lib/python3.7/site-packages/mate3/main.py", line 59, in read
    print(json.dumps(devices, indent=indent))
  File "/usr/lib/python3.7/json/__init__.py", line 231, in dumps
    return _default_encoder.encode(obj)
  File "/usr/lib/python3.7/json/encoder.py", line 199, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/lib/python3.7/json/encoder.py", line 257, in iterencode
    return _iterencode(o, 0)
  File "/usr/lib/python3.7/json/encoder.py", line 179, in default
    raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type FieldValue is not JSON serializable

[kodonnell]

0.5.3 export to json was ok, starting with 0.6.0 give below error

Good spotting! I added basic CLI tests in 0.6.1 (as the previous tests weren't checking the CLI), but only did the basic stuff for now (i.e. reading to text format). I'm glad I did that, 'cos now I've added in a test that reproduced this error (i.e. reading to json), and fixed it in #29 .

[kodonnell]

Oh, just to be clear, it's fixed in 0.6.2.