Individual skill

unit-test-vue-pinia

Write and review unit tests for Vue 3 + TypeScript + Vitest + Pinia codebases. Use when creating or updating tests for components, composables, and stores; mocking Pinia with createTestingPinia; applying Vue Test Utils patterns; and enforcing black-box assertions over implementation details.

skills/unit-test-vue-pinia/SKILL.md

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# unit-test-vue-pinia

Use this skill to create or review unit tests for Vue components, composables, and Pinia stores. Keep tests small, deterministic, and behavior-first.

## Workflow

1. Identify the behavior boundary first: component UI behavior, composable behavior, or store behavior.
2. Choose the narrowest test style that can prove that behavior.
3. Set up Pinia with the least powerful option that still covers the scenario.
4. Drive the test through public inputs such as props, form updates, button clicks, emitted child events, and store APIs.
5. Assert observable outputs and side effects before considering any instance-level assertion.
6. Return or review tests with clear behavior-oriented names and note any remaining coverage gaps.

## Core Rules