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

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

vue-testing-best-practices

Reference