# Introduction
From `morphRelationCreationPayload` to `flatFieldMetadatas`
close https://github.com/twentyhq/core-team-issues/issues/1406
## Unit testing
I'm not a fan of covering things this way, where we could have some
strong integration testing tests in the first place
But I wanted to freeze the optimistic path computation, also covered the
exception because it was cheap, doesn't mean I won't cover them through
integration tests later anw
# Introduction
Moving validation directly in the builder that has the perfect
granularity to do it.
When importing we won't have to infer and dispatch on the operation
nature ( update delete create ) and validate accordingly
## Objects
Only migrated object validation for the moment even though create object
involves a validate flat field metadata creation call too
## TODO
- improve `otherFlatObjectMetadataMapsToValidate` naming too vague
## Next
- handle fields validation within fields actions build
- Unit test coverage validation issue on builder and validate
- integration test plugging with new feature flag
## Manual tested
- Update
- Delete
- Create TODO
# Introduction
Introduced `EachTesting` pattern for the builder unit tests.
As always any suggestions are more than welcomed !
Still need to:
- [x] implem basic tests for field
- [x] create `get-flat-index-field-metadata.mock.ts`
- [x] Implement basic tests for index and index-fields
- [ ] Implem standard edges cases tests TDD style
## Misc
- was https://github.com/twentyhq/twenty/pull/13132 closed due to mess
to rebase on main
Paul Rastoin