Feat/test readiness contract

[AAdewunmi]

Summary

Adds focused test coverage for the readiness contract exposed by /api/health/.

Changes

• add integration coverage in tests/test_health_api.py for the public health endpoint
• verify the healthy path returns 200 OK with the expected readiness payload fields
• verify the degraded path returns 503 Service Unavailable with a stable payload shape
• align the tests with the actual project routing and view import paths

Behavior

• GET /api/health/ is exercised through the real URL configuration
• healthy checks return 200 with status=ok and checks.database=ok
• degraded checks return 503 with status=degraded and checks.database=unavailable
• the response contract remains stable for monitoring and deployment tooling

Why

• protects the readiness endpoint from regressions in route wiring and response shape
• ensures both operational states are covered explicitly
• improves confidence in the deployment-facing contract reported by the health probe

Validation

• docker compose exec web pytest tests/test_health_api.py -q

Result

• focused readiness endpoint integration tests passed: 2 passed

Notes

• the tests were updated to use the repo’s real route namespace, core_api:health
• the degraded-path test patches core.api.views.get_readiness_payload, which matches the actual view implementation

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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