Add tests

[yakimka]

No description provided.

[codecov]

Codecov Report

Patch coverage: 99.27% and project coverage change: +83.84% 🎉

Comparison is base (f72f4e1) 7.40% compared to head (c5f29c3) 91.25%.

Additional details and impacted files

@@            Coverage Diff             @@
##            main      #19       +/-   ##
==========================================
+ Coverage   7.40%   91.25%   +83.84%     
==========================================
  Files          9       18        +9     
  Lines        486      766      +280     
  Branches      45       80       +35     
==========================================
+ Hits          36      699      +663     
+ Misses       449       60      -389     
- Partials       1        7        +6     

Files Changed	Coverage Δ
difflume/tui/modals.py	78.46% <60.00%> (+78.46%)	⬆️
difflume/diffapp/modules.py	99.23% <100.00%> (+99.23%)	⬆️
difflume/tui/app.py	100.00% <100.00%> (+100.00%)	⬆️
difflume/tui/widgets.py	86.15% <100.00%> (+86.15%)	⬆️
tests/conftest.py	100.00% <100.00%> (ø)
tests/diffapp/modules/test_couchdb_module.py	100.00% <100.00%> (ø)
tests/diffapp/modules/test_fs_module.py	100.00% <100.00%> (ø)
tests/diffapp/modules/test_url_module.py	100.00% <100.00%> (ø)
tests/diffapp/test_parse_content.py	100.00% <100.00%> (ø)
tests/tui/conftest.py	100.00% <100.00%> (ø)
... and 1 more

... and 4 files with indirect coverage changes

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