Jest or Vitest setup for Express - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import Express in a test file.

Express

const express = require('[1]');

Drag options to blanks, or click blank then click option'

Apath

Bhttp

Cfs

Dexpress

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'http' instead of 'express' for import.

You import Express by requiring the 'express' package.

2fill in blank

medium

Complete the code to import the testing function from Vitest.

Express

const { [1] } = require('vitest');

Drag options to blanks, or click blank then click option'

Adescribe

Brun

Ctest

Dstart

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'run' or 'start' which are not test functions.

The 'test' function is used to define test cases in Vitest.

3fill in blank

hard

Fix the error in importing the supertest library for HTTP testing.

Express

const request = require('[1]');

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Asupertest

Bsupertest-express

Csupertestjs

Dsupertest-http

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect package names like 'supertest-express'.

The correct package name for HTTP testing with Express is 'supertest'.

4fill in blank

hard

Fill both blanks to create a simple test that checks the Express app response status.

Express

test('GET / responds with 200', async () => {
  const response = await request([1]).get('/');
  expect(response.status).toBe([2]);
});

Drag options to blanks, or click blank then click option'

Aapp

Bserver

C404

D200

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'server' instead of 'app' or wrong status codes.

We use the Express app instance to send requests and expect a 200 status for success.

5fill in blank

hard

Fill all three blanks to setup a Vitest test file with Express and supertest.

Express

const express = require('[1]');
const request = require('[2]');
const { test, expect } = require('[3]');

Drag options to blanks, or click blank then click option'

Aexpress

Bsupertest

Cvitest

Djest

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing Jest with Vitest imports or wrong package names.

We import Express, supertest for HTTP testing, and Vitest functions for testing.