mock-gen

name	mock-gen
description	Generates mock data factories and API mocks for testing
argument-hint	<type-or-interface-name>
user-invocable	true
allowed-tools	Read Grep Glob Edit
effort	low

Generate Mocks

Target type/interface: $ARGUMENTS

1. Find the type definition:

grep -rn "interface $ARGUMENTS\|type $ARGUMENTS\s*=" src/ --include="*.ts" | head -5

2. Read the full type definition.

3. Generate a factory function:

// Generated mock factory
export function create$ARGUMENTS(overrides?: Partial<$ARGUMENTS>): $ARGUMENTS {
  return {
    id: faker.string.uuid(),
    name: faker.person.fullName(),
    email: faker.internet.email(),
    createdAt: faker.date.recent(),
    // ...all fields
    ...overrides,
  }
}

4. If faker or @faker-js/faker is not in the project, use inline test data patterns instead.

5. Also generate:

   • MSW handler if the project uses MSW (src/mocks/)
   • Array factory: createMany$ARGUMENTS(n: number)

6. Place in src/__mocks__/ or src/testing/factories/ - match project convention.