Jest Testing Framework

The video tutorial introduces Node.js testing, emphasizing its importance. It guides viewers through setting up Jest, a popular testing framework, and creating their first test case. The tutorial explains how to interpret test results and handle errors. It concludes by discussing the benefits of testing, such as saving time, ensuring reliability, and providing peace of mind.

What is the first step in learning Node.js testing according to the tutorial?

• Exploring different testing frameworks

• Setting up a test environment

• Creating and running your first test

• Understanding the importance of testing

Which two testing frameworks are highlighted as major players for Node.js?

• Mocha and Chai

• Jest and Mocha

• Chai and Jasmine

• Jest and Jasmine

Why is Jest chosen over other frameworks in this tutorial?

• It is the only framework available

• It is more modern with useful features

• It is easier to install

• It is the most popular

What command is used to install Jest as a development dependency?

• npm install jest

• npm install jest --save

• npm i jest@23.6.0 --save-dev

• npm i jest --global

What is the purpose of the 'test' script in the package.json file?

• To run the application

• To start the server

• To compile the code

• To execute Jest tests

What file extension does Jest look for to identify test files?

• .jest.js

• .js

• .test.js

• .spec.js

What happens if a test function throws an error in Jest?

• The test is ignored

• The test is considered a success

• The test is considered a failure

• The test is skipped

How does writing test cases save time in the long run?

• By allowing tests to be reused multiple times

• By reducing the need for code comments

• By automating code refactoring

• By eliminating the need for debugging

What is one of the key benefits of having a test suite in place?

• It reduces the need for documentation

• It provides flexibility for developers

• It ensures code is always bug-free

• It makes the code run faster

What is a major advantage of automated testing over manual testing?

• It requires less initial setup

• It requires no maintenance

• It is faster to write tests

• It is more accurate and less prone to human error