Vue Testing
Vitest, Vue Test Utils, component testing, mocking, snapshot testing, E2E with Playwright
1What is Vitest?
What is Vitest?
Answer
Vitest is a modern unit testing framework designed specifically for Vite projects. It offers native ESM module compatibility, built-in TypeScript support, and ultra-fast execution thanks to its deep integration with Vite. Vitest provides a Jest-compatible API, making it easy to migrate existing projects while benefiting from superior performance.
2What is the role of Vue Test Utils?
What is the role of Vue Test Utils?
Answer
Vue Test Utils is the official testing library for Vue.js that provides utilities to mount and interact with Vue components in a testing environment. It exposes methods like mount and shallowMount to render components, as well as APIs to simulate user interactions, verify props, capture emitted events, and inspect the rendered DOM. This library is essential for testing Vue components in isolation.
3What is the main difference between mount and shallowMount?
What is the main difference between mount and shallowMount?
Answer
mount renders the complete component with all its child components recursively, creating a full DOM tree. shallowMount only renders the top-level component by automatically replacing all child components with empty stubs. Use shallowMount for strict unit tests where isolation is paramount and mount for integration tests where parent-child component interactions need to be verified.
How to configure Vitest in a Vue/Nuxt project?
Which wrapper method allows finding an element by its CSS selector?
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Other Vue.js / Nuxt.js interview topics
JavaScript Fundamentals
Modern JavaScript (ES6+)
Vue Basics
Vue Components
Vue Router
Pinia State Management
Vuex (Legacy)
Composition API
Vue Reactivity
Nuxt Fundamentals
Nuxt Data Fetching
Nuxt SSR & SSG
Nuxt Server Routes
Nuxt Modules
Vue Composables
Vue Forms & Validation
Nuxt State Management
Nuxt Deployment & CI/CD
Vue Performance
Vue Advanced Patterns
TypeScript with Vue
Nuxt Authentication
SEO with Nuxt
Nuxt Internationalization
Vue Architecture
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Vue Ecosystem
Migration Vue 2→3 & Nuxt 2→3
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