Top 5 JavaScript Testing Frameworks!


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In this blog, we will discuss the top five JavaScript testing frameworks including JavaScript testing tools, node.js test framework, jasmine test framework, and karma framework. So let’s begin!!

JavaScript Testing Framework

The world of JavaScript has given us tons of choices for pretty much everything we need from the designing aspect through to the testing stage of a program. JavaScript has client-side growth frameworks for the frontend, server-side advancement frameworks for the backend, and further testing frameworks for automation testing goals. The variation of JavaScript testing frameworks presently available for automation testers have become a reason for confusion for many. It is relatively obvious that the more choices you have, the harder it is to decide on a choice and stick to it.

What is a testing framework?

First of all to have an obvious picture of the subject, let’s understand what a “testing framework” really is.

A testing framework is an implementation environment for automated tests. It is the all-around system in which the tests will be automated. A testing framework commonly follows a set of guidelines or rules and regulations utilized for building and designing test cases. These guidelines could contain test-data handling procedures, object repositories, coding standards, processes for saving test results, or data on how to access external resources. 

Such a framework also comprises a combination of processes and tools that are designed to enable QA professionals to do their testing more productively.

The Testing framework is accountable for the following points:

  1. Defining the format in which to convey expectations
  2. Building a mechanism to drive the application under test
  3. Enforcing the tests
  4. Reporting conclusions

The significance of utilizing a testing framework in software development

Testing as we understand it is a crucial stage of the Software Development Life Cycle. Thus, when developing software, essential attention should be hired for the testing stage. If we have an association of testers and think if each module executes a different technique then the time required for the tester to become efficient in the modern environment will take longer.

To deal with this we cannot formulate changes to the automation environment for each fresh application that arrives along. For this objective, we utilize an application-independent testing framework and possess the capacity to broaden with the prerequisites of each application.

Using a framework for automated testing will enhance a team’s test speed and efficiency, boost test accuracy and will lessen test maintenance prices as well as lower risks. Hence a framework is important to a productive automated testing procedure for some key reasons:

  1. Enhanced test efficiency
  2. Lower maintenance prices
  3. Least manual intervention
  4. Maximum test coverage
  5. Reusability of code

Top JavaScript Testing Frameworks

Now let’s move into the list of the five best JavaScript testing frameworks to understand in 2020. The orders of these frameworks are established on popularity standards.


Jest is the testing framework established and maintained by Facebook. Jest framework’s major focus is clarity. It is founded on Jasmine which we will be discussing later in this blog. Over time, Facebook replaced the supreme of its functionality. They added a ton of features on top of it which created Jest more and more extraordinary. Jest is being widely utilized with Selenium for JavaScript automated testing. It delivers considerable cross-browser support for automated browser testing.


Mocha is a JavaScript testing framework that operates both on the Node.js test framework and in the browser. It is widely utilized for asynchronous testing. It is understood to be a feature-rich JavaScript framework. Tests in Mocha drive serially and the reports are detailed and flexible. Mocha is a bit harder to prep and halved into more libraries but it is further flexible and open to expansions.

Karma framework

Karma is more specifically a test runner. Karma is an efficient testing environment that supports all the prominent test description frameworks within itself such as Mocha, Jasmine, QUnit, etc. Moreover, those tests can be performed not only in the browsers of your preference but also on the platform of your choice Ike desktop, phone, or tablet. Karma is highly configurable and integrates with outstanding CI/CD packages such as Travis, Jenkins, etc. It possesses outstanding plugin support too.

Jasmine test framework

Jasmine stands as a JavaScript behavior-driven development test framework. It is the testing framework that Jest was initially based on and is primarily utilized for asynchronous testing. Jasmine operates on Node.js and enables precise and flexible bug reporting. It has been through for the longest and thus has a vast amount of tools, articles, and questions answered in many forums that were all built by the community over several years. 

Jasmine is beneficial for a testing frontend for vision. Jasmine enables us to automate user behavior with customs uncertainties.


Puppeteer, an outstanding test execution framework created by a team at Google. It is a Node.js established an automated testing library that delivers an API that enables the users to control Chrome by overriding the basic DevTools protocol. Various scenarios that can be accomplished manually in the browser can be automated with the help of Puppeteer. Puppeteer supports characteristics from ES6 like async and await. It gives automation support for UI testing, keyboard inputs, and form submission.

We have outlined five of the most popular JavaScript testing frameworks that are in demand in 2020. There probably be some confusion when it comes to the accuracy of the term ‘framework’ being utilized on Karma and Puppeteer as Karma is further like a test runner and Puppeteer is more of a library. However, in the sense that both of them enable you to design automated tests that later operate without human intervention, they can be known as frameworks to an expanse.

The selection of choosing a framework mostly relies on the nature of the software that you are aiming to test. The purpose is not to master one intention from this list and use it to test every bit of software that you aim for. Instead, every option has its pros and cons and you should be smart enough to recognize which piece perfectly fits the puzzle illustrated by your software design.

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