Sanity Check

Passing tests is necessary but not sufficient. Before declaring done, verify your code matches the real world.

When to Run

After implementation is complete and tests pass. Before committing or declaring done.

Checks

1. Run with Real Data

• Execute the program with real inputs (dry-run if available).
• Check output makes sense — wrong numbers, weird dates, implausible results → investigate.
• If no dry-run mode exists, call real endpoints in a throwaway script and confirm the response matches your code's assumptions.

2. Cross-Check External APIs