add tests

[leonardocustodio]

Summary

This adds the tests for validation inside an array #930

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Type of change:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Misc. change (internal, infrastructure, maintenance, etc.)

Checklist:

• Existing tests have been adapted and/or new tests have been added
• Add a CHANGELOG.md entry
• Update the README.md
• Code style has been fixed via composer fix-style

[mfn]

@leonardocustodio sorry for the long delay, can you update the PR with master please?

[leonardocustodio]

There you go, I've rebased with the new changes of master

[mfn]

@leonardocustodio sorry again for the long delay. they still where not green (you can check them yourself after you push), unfortunately the logs already have expired.

I tried a quick fix in #963 after merging master, but the errors I saw on GHA and locally were not the same so I stopped.

Can you please make the tests green?

[mfn]

Closing due to lack of feedback