test: add missing test for SumOfGeometricProgression

[vil02]

 know more

Describe your change:

This PR adds a test covering this line:

JavaScript/Maths/SumOfGeometricProgression.js

Line 26 in 10febce

throw new Error(

• Add missing test.

Checklist:

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• All new JavaScript files are placed inside an existing directory.
• All filenames should use the UpperCamelCase (PascalCase) style. There should be no spaces in filenames.
  Example:UserProfile.js is allowed but userprofile.js,Userprofile.js,user-Profile.js,userProfile.js are not
• All new algorithms have a URL in their comments that points to Wikipedia or another similar explanation.
• If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (10febce) 83.45% compared to head (efe7ebb) 83.47%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1607      +/-   ##
==========================================
+ Coverage   83.45%   83.47%   +0.02%     
==========================================
  Files         377      377              
  Lines       19745    19745              
  Branches     2906     2908       +2     
==========================================
+ Hits        16478    16482       +4     
+ Misses       3267     3263       -4     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[appgurueu]

(BTW, feel free to improve coverage of various algorithms in one go, to avoid overhead from constant PR back-and-forth.)