tests: add test perf

[Clarmy]

No description provided.

[codecov-commenter]

Codecov Report

Merging #43 (3be5dd3) into main (9983e07) will increase coverage by 1.25%.
The diff coverage is 100.00%.

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@@            Coverage Diff             @@
##             main      #43      +/-   ##
==========================================
+ Coverage   87.81%   89.06%   +1.25%     
==========================================
  Files          59       59              
  Lines        2224     2296      +72     
==========================================
+ Hits         1953     2045      +92     
+ Misses        271      251      -20     

Impacted Files	Coverage Δ
tests/functions/case/__init__.py	100.00% <ø> (ø)
tests/functions/case/precip/accumulate/__init__.py	100.00% <ø> (ø)
...tions/case/precip/accumulate/acc_accuracy_ratio.py	100.00% <ø> (ø)
...functions/case/precip/accumulate/acc_bias_score.py	100.00% <ø> (ø)
tests/functions/case/precip/accumulate/acc_ets.py	100.00% <ø> (ø)
...ns/case/precip/accumulate/acc_false_alarm_ratio.py	100.00% <ø> (ø)
.../functions/case/precip/accumulate/acc_hit_ratio.py	100.00% <ø> (ø)
...functions/case/precip/accumulate/acc_miss_ratio.py	100.00% <ø> (ø)
tests/functions/case/precip/accumulate/acc_ts.py	100.00% <ø> (ø)
tests/functions/case/precip/interval/__init__.py	100.00% <ø> (ø)
... and 33 more

... and 1 file with indirect coverage changes