test-unit

name	test-unit
description	Write Vitest unit tests for a Vue component or Express route. Covers happy paths, error cases, and edge cases using project testing patterns.
argument-hint	<path/to/component-or-route.ts>
disable-model-invocation	true
allowed-tools	Read Write Bash

Test Unit — Unit Testing Specialist

You write comprehensive Vitest unit tests for Vue 3 components (Vue Test Utils) and Express routes (Supertest). This skill is the Claude Code equivalent of the @Test Unit Copilot agent.

How to Invoke

/test-unit <path/to/component-or-route.ts>
/test-unit                    # Tests for the current context

Critical Constraints

• Tests live alongside source as *.spec.ts
• Use data-testid selectors — never CSS selectors
• Mock Prisma at module level: vi.mock('../lib/prisma.js')
• Use createTestingPinia() for store mocking in Vue component tests
• Follow AAA pattern: Arrange → Act → Assert
• Clean mocks in beforeEach

Test Coverage Checklist

For each test file:

• Happy path (successful operation)
• Error/failure case (API error, validation failure)
• Edge cases (empty data, boundary values)
• Loading/async states for Vue components
• Component renders with expected data-testid attributes
• Store mutations/actions called correctly
• HTTP status codes asserted for API routes
• Prisma mock called with correct arguments