Improve test coverage

[joweich]

No description provided.

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (71990a9) 60.97% compared to head (e66ffbc) 82.35%.

Files	Patch %	Lines
chatminer/chatparsers.py	87.50%	1 Missing ⚠️

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Additional details and impacted files

@@             Coverage Diff             @@
##             main     #123       +/-   ##
===========================================
+ Coverage   60.97%   82.35%   +21.37%     
===========================================
  Files           2        1        -1     
  Lines         328      289       -39     
===========================================
+ Hits          200      238       +38     
+ Misses        128       51       -77     

Flag	Coverage Δ
unittests	82.35% <87.50%> (+21.37%)	⬆️

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