vue-testing-best-practices

Comprehensive Vue.js testing guidance covering unit, component, and end-to-end testing strategies.

- Addresses 11 common testing challenges including async handling, composable testing, Pinia store setup, Suspense components, and Teleport queries

- Recommends Vitest for unit and component testing infrastructure, with Playwright as the preferred E2E framework

- Covers black-box component testing patterns to prevent brittle tests during refactoring, async/await patterns to eliminate race conditions, and snapshot test anti-patterns

- Includes guidance on browser vs. Node.js test runners for DOM event verification and computed style testing

Vue.js testing best practices, patterns, and common gotchas.

Testing

- Setting up test infrastructure for Vue 3 projects → See testing-vitest-recommended-for-vue

- Tests keep breaking when refactoring component internals → See testing-component-blackbox-approach

- Tests fail intermittently with race conditions → See testing-async-await-flushpromises

- Composables using lifecycle hooks or inject fail to test → See testing-composables-helper-wrapper

- Getting "injection Symbol(pinia) not found" errors in tests → See testing-pinia-store-setup

- Components with async setup won't render in tests → See testing-suspense-async-components

- Snapshot tests keep passing despite broken functionality → See testing-no-snapshot-only

- Choosing end-to-end testing framework for Vue apps → See testing-e2e-playwright-recommended

- Tests need to verify computed styles or real DOM events → See testing-browser-vs-node-runners

- Testing components created with defineAsyncComponent fails → See async-component-testing

- Teleported modal content can't be found in wrapper queries → See teleport-testing-complexity

Reference