ci: unit test for #2839

[iChenLei]

What:

Hi. I'm not sure how to approach this. It would be a good idea to add a test case for the regression, but it might be a better idea to add a test case that checks the is a operator?
How can I approach this?

Why:

regression unit test example for #2839

Checklist:

• Documentation
• Unit Tests
• Code complete
• Changelog

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[iChenLei]

cc @vixalien

[vixalien]

thanks. I think it might also be a good idea to add a test case for is a "object"

[iChenLei]

thanks. I think it might also be a good idea to add a test case for is a "object"

This is just an example; feel free to improvise to make the test cases more comprehensive. @vixalien Thanks