[TEST] Build the singleton test on windows.

[marcalff]

Contributes to #2534

Note that the original issue in #2534 is not fixed.
This change only adds unit tests to reproduce the issue, and show the current failure in windows.

Changes

Please provide a brief description of the changes here.

• Port the singleton unit test in API to build with windows
• Added verbose output for unit tests in CI on windows
• Commented the failing test cases on windows

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[netlify]

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Name	Link
🔨 Latest commit	5ee00ab
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.82%. Comparing base (490f882) to head (5ee00ab).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3183      +/-   ##
==========================================
- Coverage   87.83%   87.82%   -0.01%     
==========================================
  Files         195      195              
  Lines        6154     6154              
==========================================
- Hits         5405     5404       -1     
- Misses        749      750       +1     

see 1 file with indirect coverage changes