Additional reader tests

[codecov-commenter]

Codecov Report

Attention: 5 lines in your changes are missing coverage. Please review.

Comparison is base (3ac04fe) 32.43% compared to head (72720ce) 49.86%.

Files	Patch %	Lines
tomodo/common/models.py	91.37%	5 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #27 +/- ## =========================================== + Coverage 32.43% 49.86% +17.42% =========================================== Files 10 10 Lines 1119 1089 -30 =========================================== + Hits 363 543 +180 + Misses 756 546 -210 ```

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