fix factorial test

[anandijain]

No description provided.

[codecov]

Codecov Report

Merging #31 (10526e1) into main (0b85c73) will decrease coverage by 2.67%.
The diff coverage is 65.00%.

@@            Coverage Diff             @@
##             main      #31      +/-   ##
==========================================
- Coverage   63.92%   61.25%   -2.68%     
==========================================
  Files           4        4              
  Lines         158      160       +2     
==========================================
- Hits          101       98       -3     
- Misses         57       62       +5     

Impacted Files	Coverage Δ
src/maps.jl	32.25% <0.00%> (-3.46%)	⬇️
src/parse.jl	96.77% <92.85%> (+1.31%)	⬆️

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