chore(tests): second iteration on improving coverage

[jeertmans]

No description provided.

[github-actions]

Please summarize your changes in CHANGELOG.md.
See Keep A Changelog for more details.

[github-actions]

Benchmark results:

group           before                                 changes
-----           ------                                 -------
basic/large     1.04   582.9±22.47ms    13.9 KB/sec    1.00    560.3±4.88ms    14.4 KB/sec
basic/medium    1.03   183.5±15.19ms     7.7 KB/sec    1.00    178.2±7.33ms     7.9 KB/sec
basic/small     1.00    142.6±6.91ms     5.2 KB/sec    1.05   149.3±13.66ms     4.9 KB/sec
split/large     1.00       3.0±0.26s     2.7 KB/sec    1.12       3.4±0.47s     2.4 KB/sec
split/medium    1.06  1253.0±55.03ms     1152 B/sec    1.00  1178.5±130.20ms     1225 B/sec
split/small     1.20   222.9±21.71ms     3.3 KB/sec    1.00   185.9±14.30ms     4.0 KB/sec

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +2.89 🎉

Comparison is base (029e5c0) 23.50% compared to head (db076cc) 26.39%.

❗ Current head db076cc differs from pull request most recent head f05261b. Consider uploading reports for the commit f05261b to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #91      +/-   ##
==========================================
+ Coverage   23.50%   26.39%   +2.89%     
==========================================
  Files           7        7              
  Lines         519      519              
==========================================
+ Hits          122      137      +15     
+ Misses        397      382      -15     

Impacted Files	Coverage Δ
src/lib/cli.rs	9.63% <100.00%> (+9.63%)	⬆️

... and 2 files with indirect coverage changes

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