ci: Fix flaky test invalid server state: initialized

[dplewis]

Pull Request

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• Any contribution is under this license.
• Link this pull request to an issue.

Issue

Attempt to fix flaky tests when the server isn't properly initialized. I believe this is caused by tests that shuts down the server to reproduce a disconnection and restarts. I am unable to reproduce this issue local so the CI should be ran a few times to ensure it works.

Closes: parse-community/parse-server#9149

Approach

• Properly handle server shutdown
• Refactor helper.js
• Add retry strategy if server isn't properly initialized

[parse-github-assistant]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (b50790a) to head (2b03abd).
Report is 83 commits behind head on alpha.

Additional details and impacted files

@@            Coverage Diff             @@
##             alpha     #2183    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files           61        64     +3     
  Lines         6186      6365   +179     
  Branches      1499      1534    +35     
==========================================
+ Hits          6186      6365   +179     

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[parseplatformorg]

🎉 This change has been released in version 5.2.0-alpha.4

[parseplatformorg]

🎉 This change has been released in version 5.2.0-beta.2

[parseplatformorg]

🎉 This change has been released in version 5.2.0