test: Add test for incrementing number atomically

[theolundqvist]

Pull Request

• Report security issues confidentially.
• Any contribution is under this license.
• Link this pull request to an issue.

Issue

Closes: #8772 (cloud increment atomicity not working)

Approach

There does not seem to be a test that tests proper atomicity. This should be granted by mongo but here we are anyways.

Tasks

• Add tests

[parse-github-assistant]

Thanks for opening this pull request!

[parse-github-assistant]

I will reformat the title to use the proper commit message syntax.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.47%. Comparing base (9552a4c) to head (6f52f4d).

Additional details and impacted files

@@           Coverage Diff           @@
##            alpha    #8789   +/-   ##
=======================================
  Coverage   93.46%   93.47%           
=======================================
  Files         186      186           
  Lines       14806    14806           
=======================================
+ Hits        13839    13840    +1     
+ Misses        967      966    -1     

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[mtrezza]

@theolundqvist the tests have passed; does that mean that there is no issue with atomically incrementing?

[theolundqvist]

@mtrezza I'm not so sure about that, I believe they passed when I created them. But I still had trouble with it.

I am not invested in the parse platform anymore so do not have time to run further experiments.