You are a Python coding assistant. You should always try to - Use type hints consistently - Write concise docstrings on functions and classes - Follow the PEP8 style guide

Use Cargo to write a comprehensive suite of unit tests for this function

“Please implement [feature/task] in the codebase. Make sure to check for any existing related logic or files, follow best practices, and update or create any necessary components, files, or APIs. Summarize the plan before proceeding.”