add: compiler tests

[flower-of-the-bridges]

This PR adds tests for validator compiler function.

Pull Request Type

• [x] Bugfix
• [ ] Feature
• [ ] Code style update (formatting, local variables)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] CI related changes
• [ ] Documentation content changes
• [ ] Other... Please describe:

Description

PR Checklist

• [x] The commit message follows our guidelines included in the CONTRIBUTING.md
• [x] Tests for the changes have been added (for bug fixes / features)
• [x] Docs have been added / updated (for bug fixes / features)

Does this PR introduce a breaking change?

• [ ] Yes
• [x] No

Other information