Jm/status fix

[jessicamillar]

When a TelemetryValue was 0 (as opposed to None), the scada still includes it in the status snapshot.

replace if self.latest_reading[node] with if self.latest_reading[node] is not None

[codecov[bot]]

Codecov Report

Merging #61 (866d43f) into main (b04455d) will decrease coverage by 3.88%. The diff coverage is 6.45%.

@@            Coverage Diff             @@
##             main      #61      +/-   ##
==========================================
- Coverage   71.65%   67.76%   -3.89%     
==========================================
  Files         128      128              
  Lines        4290     4297       +7     
==========================================
- Hits         3074     2912     -162     
- Misses       1216     1385     +169     

Impacted Files	Coverage Δ
gw_spaceheat/actors/scada.py	63.37% <0.00%> (-10.47%)	:arrow_down:
test/test_examples.py	81.48% <6.66%> (-18.52%)	:arrow_down:
...t_sh_status_snapshot/gt_sh_status_snapshot_base.py	28.26% <0.00%> (-47.83%)	:arrow_down:
...li_scada_response/gt_sh_cli_scada_response_base.py	45.00% <0.00%> (-45.00%)	:arrow_down:
...i_scada_response/gt_sh_cli_scada_response_maker.py	40.62% <0.00%> (-40.63%)	:arrow_down:
...ema/gt/gt_sh_cli_atn_cmd/gt_sh_cli_atn_cmd_base.py	50.00% <0.00%> (-38.89%)	:arrow_down:
...ma/gt/gt_sh_cli_atn_cmd/gt_sh_cli_atn_cmd_maker.py	43.33% <0.00%> (-36.67%)	:arrow_down:
..._sh_status_snapshot/gt_sh_status_snapshot_maker.py	34.14% <0.00%> (-34.15%)	:arrow_down:
...t/schema/gt/gt_sh_cli_atn_cmd/gt_sh_cli_atn_cmd.py	55.55% <0.00%> (-33.34%)	:arrow_down:
.../gt/gt_sh_status_snapshot/gt_sh_status_snapshot.py	55.55% <0.00%> (-33.34%)	:arrow_down:
... and 8 more

:mega: Codecov can now indicate which changes are the most critical in Pull Requests. Learn more