Improve test coverage #4444
Description
🤔 What is the technical debt you think should be addressed?
This is initiated from #4407 (comment), the test coverage is not that good for https://github.com/llamastack/llama-stack/tree/main/tests/unit/, so we may need to revisit and improve it.
💡 What is the benefit of addressing this technical debt?
Improving test coverage can:
- Catch regressions early
- Increase confidence when refactoring
- Enforce contracts and invariants
- Improve code quality (design pressure)
- Faster reviews and easier collaboration
- Enable safe velocity (long-term speed)
Other thoughts
No response