Verification & Testing Checklist for `stop-ids-for-agency` Endpoint

[amrhossamdev]

Verification & Testing Checklist for stop-ids-for-agency Endpoint

• Verify the endpoint is reachable and responding with correct status codes (e.g., 200 OK for valid requests).
• Compare the response from testing against production to ensure consistency in data and structure.
• Validate response schema (fields, types, required properties).
• Confirm returned stop IDs match expected IDs for the agency.
• Test with different agency IDs (valid, invalid, non-existent).
• Test edge cases (e.g., agencies with no stops).
• Check response times and ensure performance is acceptable.
• Ensure proper error handling (400, 404, 500 cases).
• Write/strengthen unit tests if coverage is missing or weak.
• Confirm no regressions compared to production behavior.
• If issues are found, create a PR with fixes and updated tests.