Add tests for Project Euler Problem 5 + minor refactor by pomkarnath98 · Pull Request #1691 · TheAlgorithms/JavaScript

@@            Coverage Diff             @@
##           master    #1691      +/-   ##
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+ Coverage   84.65%   84.76%   +0.10%     
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  Files         378      378              
  Lines       19744    19742       -2     
  Branches     2952     2956       +4     
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+ Hits        16715    16735      +20     
+ Misses       3029     3007      -22