Types
Fixture
The serializable test layer, seed data plus the plugins it depends on.
A Fixture is the serializable test layer an extension ships alongside its live code: a seed function that creates
known records over the typed WordPress client, plus the plugins that content depends on. Author one with
defineFixture, then hand it to a config's
dev/test stacks.
Prop
Type
Seed context
seed and cleanup receive a context with the typed WordPress client and the ids of the seeded users:
Prop
Type
seed returns a record of handles (ids, codes, or slugs of what it created) stored under the fixture's name
so a test can read them back and re-fetch the live resource. Return handles, not full snapshots, which would drift
from WordPress state.