A Short Guide On ReactJS Testing: Why & How To Do It

This blog post reflects the imperative information on ReactJS testing services for your business application or website. Find different ways to test your application, features, and libraries used to rectify errors. A periodic and well-tested application ensures upscale performance and meets the users demands with ease.

Have you ever accessed movie and series streaming apps like Netflix or Amazon Prime? Let’s assume you have accessed the same, especially during the lockdown period of the pandemic. Such apps are the best entertainment mediums for people to kill boredom and watch interesting content.

Concerning such apps, the user interface showing several snapshots of movies and series enables you to click on a particular option and start binge-watching.

What if you are not able to tap on the movie icon, the search bar does not function properly, or you fail to see the preferred choice of options? These errors would create a negative impact and you do not wait for much to uninstall the app.

Similarly, your business application might face the same fate if you fail to test and analyze the user interface performance and fix the inaccuracies well on time. Hire ReactJS development company to implement end-to-end application testing and ensure seamless performance.

Why ReactJS Testing Is Required?

Slow speed, bugs, and errors are just a few reasons to implement end-to-end ReactJS website testing. You need to know all like the following:

* Minimize Application Fail: It’s not wise to assume that your application works efficiently 24/7 effectively. Whenever you introduce a change in the UI, make a graphic change, add CTA, or do any code change, there might be a slight glitch in the performance. With the assistance of ReactJS testers, you can ensure the effective functioning of the application and manage to upscale performance.

* Write Efficient Code: In many cases, ReactJS application test-driven development helps write more effective code than before. It covers the failures by writing new code effectively and maintaining application performance.

* Release the Latest Features: By implementing the application testing lifecycle within the organization, you can release the latest features with ease. Simply enable Continuous Integration (CI) and Continuous Deployment (CD) that allow the application to pass the test at various stages.

What to Test in the Application?

ReactJS testing is strategic, well-planned, and implemented based on the priorities of your application. There might be the case that your business application interface fails to load fast, graphics appear disrupted, the payment page fails to download, or anything. Therefore, carry out ReactJS testing of the application and start with the necessary checks.

* Carry out the testing on new features to add or already added.
* Execute border case scenarios in high valued features.
* Identify and test the most complicated or used component of the ReactJS application.
* Stress and performance testing when your application serves an extended base of users.
* Include the testing scope for a basic set of features.

Useful Libraries to Test ReactJS Application

Testing your ReactJS application requires the integration of advanced testing libraries and tools. Although, you need not dive into the detailed functionality of every testing library. Still, basic information must be there to ask the relevant question from a ReactJS website development company.

1. Mocking Library

Application testing must done on the relevant and imperative components. Turning the testing focus towards all other components of the app deviates from the path and takes more time to complete the task. It is where Mocking Library comes to your rescue and helps build focus on specific components of the application.

2. Test Runner Tool

A Test Runner is testing software that helps run the tests of the application either by selecting individual components or the app as a whole. Once the test is completed, the software provides the success or failure report based on the test considerations.

3. Assertion Library

The assertion library is another useful library for ReactJS application testing. The library helps ascertain the time required to test a particular component. Accordingly, the testing team can plan priorities and manages the task with ease.

How to Test ReactJS Application?

ReactJS has different types of testing to check the overall accuracy, speed, performance, and application load.

1. Unit Testing

As the name itself implies, Unit Testing in React application refers to the process of testing each module or unit of the application. Let’s just say testers check the functionality of commonly used buttons on the application first, fix the same, and then move to other components.

In general, unit tests cover 70% testing of your application because of separately testing several units, executing test cases, removing complex functionalities, increasing speed, and more.

2. Snapshot Testing

Snapshot testing of the application deals with taking snapshots of how a React component renders and comparing it with the reference-based snapshot. If both the snapshots matches, then it is successful otherwise failure to match leads to further testing.

In case you are adding a new feature to the ReactJS application UI and expecting a change in the functionality. Implement snapshot testing by taking the snapshot of previous functionality and compare with the newly added feature. If the performance matches in both snapshots then testing is successful.

3. Integration Testing

Integration testing refers to the application successfully integrating with other functionalities. For example, your application must collaborate and communicate seamlessly with the database to fetch relevant data. If it fails to work together, then testers initiate integration testing to find the glitch.

Similarly, integration testing of the React application also deals with proper browser performance. Users must access your application on different browsers, click on events and buttons, select functionalities, and more.

Concluding Thoughts

Testing your business application is an imperative factor that ensures seamless performance, a user-friendly experience, and fewer failures. Know what to test, how to test, and which tools can be used to test your application. Get started with the ReactJS application testing with professional testing experts at ReactJSIndia.

Frequently Asked Questions

1. Is ReactJS application testing relevant?

Yes, without testing you cannot find the errors, reasons for slow speed, inefficient UI functionalities, and several components. By implementing end-to-end testing of the UI, ensure effective operations and intuitive user experience.

2. How much time does it take to test the ReactJS application?

There is no specific testing timeline. It depends on the complexity and number of features you have on the application. A professional team of testing first analyzes your app and provides a strategic testing timeline and follows the same.

3. How would I know the result of the testing?

The testing agents keep you posted while fixing the UI-related errors of your application and showcase the results. Here, you will experience the transparency and effectiveness of testing before your eyes.