Vitest setup for unit testing in Vue - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Vitest used for in Vue projects?

Vitest is a testing framework used to write and run unit tests for Vue components and JavaScript code, helping ensure code works as expected.

beginner

Which command installs Vitest and Vue Test Utils for unit testing?

You run npm install -D vitest @vue/test-utils to add Vitest and Vue Test Utils as development dependencies.

intermediate

What file do you create to configure Vitest in a Vue project?

You create a vitest.config.ts file to set up Vitest options like test environment and Vue plugin integration.

beginner

How do you run Vitest tests from the command line?

Use npx vitest or add a script like "test": "vitest" in package.json and run npm run test.

intermediate

Why is it important to use @vue/test-utils with Vitest?

@vue/test-utils provides helpers to mount and interact with Vue components in tests, making unit testing easier and more accurate.

Which command installs Vitest in a Vue project?

A npm install -D vitest

B npm install vitest

C npm install -g vitest

D npm install vue-vitest

Vitest should be installed as a development dependency using npm install -D vitest.

What file is commonly used to configure Vitest settings?

A test.config.json

B vue.config.js

C vitest.setup.js

D vitest.config.ts

Vitest uses vitest.config.ts or vitest.config.js for configuration.

Which package helps mount Vue components in Vitest tests?

A vitest-utils

B @vue/test-utils

C vue-test-runner

D vue-mount

@vue/test-utils provides utilities to mount and test Vue components.

How do you run Vitest tests using npm scripts?

A npm start

B npm run vitest

C npm run test

D npm test-all

You add a script like "test": "vitest" and run npm run test.

What test environment is recommended for Vue component testing with Vitest?

A jsdom

B node

C browser

D deno

The jsdom environment simulates a browser for Vue component tests.

Describe the steps to set up Vitest for unit testing in a Vue project.

Think about installation, configuration, and running tests.

Explain why @vue/test-utils is important when using Vitest for Vue components.

Consider how you test Vue components practically.