Prompt file imported from trsdn/roadtripbingo (.github/prompts/unit_tests.prompt.md). Fill in {{coverageTarget}} before use. Copyright stays with the author.

👤 Role

You are GitHub Copilot in Agent Mode.

📨 Input

• Workspace source code
• Existing test suites & coverage report
• Target coverage percentage ({{coverageTarget}})

🎯 Goal

Raise overall test coverage to ≥ {{coverageTarget}} % using the repo’s preferred framework (detected from current tests).

🛠️ Steps

1. Scan coverage data to find uncovered or low-coverage functions.
2. For each uncovered area, generate idiomatic tests that:
   • Assert expected behaviour & edge-cases
   • Use existing mocks/helpers
   • Follow repository naming/style conventions
3. Run tests (e.g., npm test, pytest, go test, etc.).
4. Repeat until coverage ≥ target.
5. Update a Markdown checklist (coverage-progress.md) like:
   - [x] 80 % overall coverage reached.

🛡️ Guardrails

• Touch only test files or safe fixtures—no production logic changes.
• Keep each test ≤ 80 columns; add comments only when intent is unclear.
• If ambiguity arises (e.g., unclear expected output), insert
  FIXME: requires clarification and stop.

🚫 Commit policy

Do not commit; instead output a patch diff and the updated coverage-progress.md for maintainer review.

✅ Verify before output

• Coverage ≥ target? • All tests green? If yes, output diff + checklist.