Last updated: May 3, 2022

Jest Unit Tests

Jest is an open-source JavaScript testing framework built by Facebook on JavaScript. Initially, It was designed for testing to React and React Native-based web applications, but now it can be used for testing apps based on Babel, TypeScript, Node, React, Angular, Vue, and a lot more. Here, we will learn about different patterns of testing JS code in frontend and backend applications like Snapshot testing, Asynchronous Testing, Mocking, Spying, We will also learn how to write tests for scalable JS-based Apps in express, angular, react, redux, react native, etc.

Getting Started with Jest

In this Blog, we will start to learn Jest, a unit testing framework of JavaScript; we also understand why we should use Jest and the advantages.

Author Aditya Anand

2 upvotes

Writing your first Unit Test with Jest

In this blog, we will understand some of the basic syntaxes of the jest framework and write our first unit test using jest with the help of examples.

Author Pratyush Singh_Kmc

0 upvotes

Skipping a Test with Jest

In this blog, we will discuss how to skip test cases in jest. We will also see how to run specific tests in jest.

Author Aman kumar Chourasiya

0 upvotes

Setup and Scoping in Jest

Performing jest tests often requires some setup and finishing work. This blog will introduce you to the setup and scope of tests in the jest framework.

Author Pratyush Singh_Kmc

0 upvotes

Jest Configuration

This blog will introduce how to configure Jest, we will also see some example configurations.

Author Aditya Anand

0 upvotes

Debugging in Jest

This blog will introduce how to debug a failed test and how to set up and run the debugger in VS code using Jest.

Author Aditya Anand

0 upvotes

Test-Driven Development and Behavior-Driven Development in Jest

Test-Driven Development and Behavior-Driven Development are two principal development methodologies among programmers. In this blog, we will understand both the methods of development and learn their usage in Jest.

Author Pratyush Singh_Kmc

0 upvotes

Matchers are used to testing values and results in different ways while using jest. This blog will introduce you to some standard matchers and their usage in jest.

Author Pratyush Singh_Kmc

0 upvotes

Mocking in Jest MEDIUM

There are two ways to mock functions: creating a mock function in test code or writing a manual mock to override a module dependency.

Author Aditya Anand

2 upvotes

Mock Implementation

This article will discuss mock implementation in detail

0 upvotes

Jest CLI Options

This article will discuss Jest CLI Options.

1 upvote

Asynchronous Testing

This blog gives a clear idea regarding asynchronous testing. Let’s check it out.

Author Gunjan Ahuja

0 upvotes

SNAPSHOT TESTING

The following blog will give you a description of what snapshot testing is and how it can be helpful to the project.

Author Gunjan Ahuja

2 upvotes

This blog will introduce you to mocking timer functions in Jest, how to create fake timers, run pending timers, run all timers, etc.

Author Aditya Anand

1 upvote

While performing tests in jest, we use manual mocks to replicate the functionality with mock data. This blog will introduce you to the use and working of manual mocks in jest.

Author Pratyush Singh_Kmc

0 upvotes

Jest Mock Classes

ES6 classes imported into the test file can be mocked in jest using mock functions. This blog will introduce you to different mocking classes in jest with examples.

Author Pratyush Singh_Kmc

0 upvotes

The Jest Object

In this article, we will go through the purpose of jest objects and their usage in web testing. We will also study a few API methods available with the help of examples.

Author Pratyush Singh_Kmc

0 upvotes

React Test Renderer

React Test Renderer is a package that makes it easy to perform Snapshot testing in javascript. This blog will let to know more about Snapshot testing using React Test Renderer.

Author Pratyush Singh_Kmc

0 upvotes

In this blog, we will discuss the various packages provided by Jest Platform. These are exclusive packages that can be imported via the require function.

Author Aman kumar Chourasiya

0 upvotes

Jest Watch Plugins

In this Blog, we will learn about watch usage, configure and create our custom watch plugin, also see the functionality of different methods in watch plugins.

Author Aditya Anand

1 upvote

Jest HTML Report Generation

This article will discuss all about Jest and how we can generate a Jest Report in an HTML format. We will be considering the web application to be made using Node, as Jest is very compatible with Node.

Author Shaurya Singhal

0 upvotes

Jest DOM Manipulation

This Blog will introduce you to DOM manipulation and test the DOM manipulation using Jest and jsdom.

Author Aditya Anand

1 upvote

Testing React App with Jest

The article covers testing React app through snapshot testing and mock testing.

Author ThakurAman

0 upvotes

Testing React Native Apps with Jest

In this blog, we will discuss how to test react native apps with jest. Actually, jest was initially developed to test react native apps only.

Author Aman kumar Chourasiya

0 upvotes

Testing React Native apps

In this tutorial, we learn about testing in React Native apps and different frameworks and types of testing.

Author vishal teotia

0 upvotes

Testing Redux with Jest

Redux is a state management library for Javascript applications. This article will use the Jest Framework to test Redux applications and their components through examples.

Author Pratyush Singh_Kmc

0 upvotes

Jest Testing Environment in Angular

This article covers setting up a testing environment in jest for Angular and removing the pre built test setup in Karma.

Author ThakurAman

0 upvotes

Testing Express App with Jest

This Blog will introduce you to testing an Express App using Jest, supertest, and superagent.

Author Aditya Anand

1 upvote