Add comprehensive @WebMvcTest for PatronProfileController

[devin-ai-integration]

Add comprehensive @WebMvcTest for PatronProfileController

Summary

This PR adds a comprehensive Spock/Groovy test suite for PatronProfileController using @WebMvcTest. The controller previously had zero test coverage despite being a critical 189-line REST API handling all patron profile operations.

Test Coverage:

• ✅ All 8 REST endpoints (3 GET collections, 2 GET single resources, 1 POST, 1 DELETE)
• ✅ Success scenarios with HATEOAS link verification
• ✅ Error scenarios (404 for not found, 500 for service failures)
• ✅ Empty collection handling
• ✅ Request/response body mapping (POST endpoint)
• ✅ Special error handling (IllegalArgumentException → 404 in DELETE)

Technical Approach:

• Uses @WebMvcTest for focused web layer testing
• Mocks service dependencies (PatronProfiles, PlacingOnHold, CancelingHold) using DetachedMockFactory in @TestConfiguration
• Follows Spock BDD-style testing patterns used throughout the codebase
• Verifies HATEOAS links using JsonPath assertions
• Tests vavr functional types (Try<Result>, io.vavr.collection.List)

Review & Testing Checklist for Human

⚠️ CRITICAL - Local Environment Issue: Tests could not be verified locally due to Lombok annotation processing issues in the dev environment (reported separately). CI validation is mandatory before merge.

• CI passes completely - This is the primary validation since local testing failed
• Verify mock setup works correctly - Check that DetachedMockFactory in @TestConfiguration properly integrates with @WebMvcTest and Spring's DI
• Spot-check error scenarios - Verify that Try.failure(IllegalArgumentException) actually returns 404 and Try.failure(RuntimeException) returns 500 in the real controller
• Verify HATEOAS links - Optionally run the app and hit an endpoint to verify the links being tested actually exist in responses
• Check test coverage metrics - Confirm PatronProfileController now has comprehensive coverage (aim for 100%)

Test Plan

If you want to manually verify (optional):

1. Start the app: ./mvnw spring-boot:run
2. Hit an endpoint: curl http://localhost:8080/profiles/{some-uuid}
3. Verify response structure matches test expectations (HATEOAS links, status codes)

Notes

• No production code changes - test-only PR
• Uses existing test fixtures (BookFixture, PatronFixture, LibraryBranchFixture)
• Follows the exact same testing patterns as HandleDuplicateHoldTest and other Spock tests in the codebase

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Link to Devin run: https://app.devin.ai/sessions/5e8fa251db55404981fc272f771675b3
Requested by: Callum Miles (@callummiles)

[devin-ai-integration]

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[callummiles]

make sure to remember to update the readme with any changes you have made