- Add authentication middleware tests for JWT validation
- Create library management tests for CRUD operations
- Add user visibility control tests
- Add JSON validation and error handling tests
- Add security testing for authorization bypasses
- Include tests for both success and failure scenarios
- Use httptest for isolated API testing
- Follow Go testing best practices
- Add comprehensive testing documentation
Tests verify multi-library system security and functionality before deployment.
Note: Database querier interface issues exist due to old user ebook folder references
in generated code and need resolution for full test suite operation.