Testing

kubb/kit/testing is a separate subpath for the Vitest-backed helpers used to test plugins, generators, and adapters. It stays separate from kubb/kit so importing the authoring toolkit never pulls Vitest into a plugin's runtime dependencies.

plugin.test.ts

import { createMockedPlugin, renderGeneratorOperation, matchFiles } from 'kubb/kit/testing'

The subpath exports mocking builders, generator runners, and a snapshot matcher:

Export	What it does
createMockedPlugin	Builds a minimal plugin for a test without wiring a full config.
createMockedAdapter	Builds a minimal adapter for a test without wiring a full config. parse returns an empty InputNode by default.
createMockedPluginDriver	Builds a driver around a set of plugins so a generator runs through its real lifecycle in isolation.
renderGeneratorSchema	Calls a generator's schema() method against a SchemaNode fixture and collects the files it emits.
renderGeneratorOperation	Calls a generator's operation() method against an OperationNode fixture and collects the files it emits.
renderGeneratorOperations	Calls a generator's operations() method against an array of OperationNode fixtures and collects the files it emits.
matchFiles	Asserts the generated FileNodes match expected paths and contents through file snapshots, the assertion most generator tests end on.