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
---
name: vue-testing-best-practices
description: Provides best practices, patterns, and solutions for testing Vue.js applications, covering Vitest, Vue Test Utils, component testing, mocking, and Playwright for E2E testing.
license: MIT
---
Vue.js testing best practices, patterns, and common gotchas.
### Testing
- Setting up test infrastructure for Vue 3 projects → See [testing-vitest-recommended-for-vue](reference/testing-vitest-recommended-for-vue.md)
- Tests keep breaking when refactoring component internals → See [testing-component-blackbox-approach](reference/testing-component-blackbox-approach.md)
- Tests fail intermittently with race conditions → See [testing-async-await-flushpromises](reference/testing-async-await-flushpromises.md)
- Composables using lifecycle hooks or inject fail to test → See [testing-composables-helper-wrapper](reference/testing-composables-helper-wrapper.md)
- Getting "injection Symbol(pinia) not found" errors in tests → See [testing-pinia-store-setup](reference/testing-pinia-store-setup.md)
- Components with async setup won't render in tests → See [testing-suspense-async-components](reference/testing-suspense-async-components.md)
- Snapshot tests keep passing despite broken functionality → See [testing-no-snapshot-only](reference/testing-no-snapshot-only.md)
- Choosing end-to-end testing framework for Vue apps → See [testing-e2e-playwright-recommended](reference/testing-e2e-playwright-recommended.md)
- Tests need to verify computed styles or real DOM events → See [testing-browser-vs-node-runners](reference/testing-browser-vs-node-runners.md)
- Testing components created with defineAsyncComponent fails → See [async-component-testing](reference/async-component-testing.md)
- Teleported modal content can't be found in wrapper queries → See [teleport-testing-complexity](reference/teleport-testing-complexity.md)
## Reference
- [Vue.js Testing Guide](https://vuejs.org/guide/scaling-up/testing)
- [Vue Test Utils](https://test-utils.vuejs.org/)
- [Vitest Documentation](https://vitest.dev/)
- [Playwright Documentation](https://playwright.dev/)
