feat: Add migration logic and tests for cloudflare_pages_project

[rotem-cloud]

feat: Add migration logic and tests for cloudflare_pages_project resource

Summary

Implements v4 to v5 migration support for the cloudflare_pages_project resource, including comprehensive configuration and state transformations with full test coverage.

Changes

Migration Implementation

• Configuration Transformations:

  • Converts nested blocks to attributes (build_config, source, deployment_configs)
  • Renames production_deployment_enabled to production_deployments_enabled in source.config
  • Adds default values for compatibility_flags, usage_model, fail_open, and placement in deployment_configs
  • Converts placement block to attribute syntax
  • Only includes placement when explicitly set (not empty)

• State Transformations:

  • Converts TypeList MaxItems:1 arrays to objects for build_config, source, and deployment_configs
  • Merges environment_variables and secrets into unified env_vars with type/value structure
  • Converts service_binding blocks to services map (extracts name as key)
  • Wraps TypeMap values in objects (kv_namespaces, d1_databases, r2_buckets)
  • Populates new v5-only fields: canonical_deployment, framework, framework_version, latest_deployment, uses_functions
  • Removes deprecated fields: domains

Test Coverage

• Unit Tests (18 test cases):

  • Config transformation tests for all resource variations
  • State transformation tests for array-to-object conversions and field merging
  • Default value handling tests for usage_model and fail_open

• Integration Tests:

  • 6 test cases covering minimal, build_config, source, deployment_configs, full, and deployment-only scenarios
  • Input and expected output Terraform configurations
  • Input and expected output state files

Helper Functions

• Added AttributeValueContainsKey function to check for nested keys in HCL attributes

Registry

• Registered pages_project migrator in the migration registry

Known Limitations

• Source block with external Git integration: The source block with GitHub/GitLab configuration is commented out in integration test files because it requires external authentication and repository access. The migration logic handles source transformations correctly (tested in unit tests), but live integration testing with actual Git repositories is not feasible in automated test environments.

Files Modified

• internal/resources/pages_project/v4_to_v5.go (644 lines added)
• internal/resources/pages_project/v4_to_v5_test.go (1287 lines added)
• internal/transform/hcl/attributes.go (27 lines added)
• internal/registry/registry.go (2 lines modified)
• integration/v4_to_v5/integration_test.go (17 lines modified)
• Integration test data files (pages_project input/expected .tf and .tfstate files)

Testing

All unit tests (18/18) and integration tests (6/6) pass successfully.