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Web Application Testing

By Priya PedamkarPriya Pedamkar

web-application-testing

Introduction to Web Application Testing

Web Application Testing is a type of testing used specifically for web applications or any other web-based application software. It always includes various other testing methods like Functional testing, Usability testing, Integration testing, Database testing, Compatibility testing, etc. In order to test all the elaborate functional features of the application, user interfaces, navigation pattern, communication between the application & databases, which basically covers the end-to-end flow of the Web Application.

Advanced Testing Techniques of Web Application

Given below are the different Web Application Testing techniques:

web application testing techniques

1. Functional Testing

Functional testing techniques include testing for links contained in your web application pages, the connection to your database, forms created to get and store information, cookies, etc.

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a. Link Testing

  • Check every internal link contained in the web application.
  • Check every outgoing link contained in the web application that points to another domain.
  • Check links that jump to some other point on the same page.
  • Check links that trigger an email to the user.
  • Look for any broken links.

b. Database Testing

  • Test data integrity.
  • Look for errors when updating, modifying, or performing any functionality related to the database.
  • Test all queries whether they are executing and retrieving data correctly.

c. Form Testing

  • Test the default values which should be auto-populated.
  • Test the validation logics on every field defined.
  • Insert incorrect inputs in the fields and look for the results.
  • Test the options to view, delete, modify or update forms.

d. Cookies Testing

  • Test by enabling the cookies in browser settings.
  • Disable cookies and test.
  • Test the cookies encryption.
  • Test for cookies expiration and user statistics after the end of the session.
  • Test security affects cookies deletion.

2. Usability Testing

It helps you in enhancing human-computer interaction. It ensures a smooth user experience. Mainly three types of testing need to be performed for usability testing

a. Comparative Testing

As the number of web applications are increasing day by day, so is the competition. Therefore, comparative usability testing aims to compare your application against other applications in the market.

b. Explorative Testing

As the name suggests, here users test end to end varying scenarios. Several use cases are applied to different services to get varying results. It proves to be very useful to minimize any gaps in the web application and highlights the areas in design to focus upon.

c. Usability Evaluation

Whenever we update our product, or while making a check on the new product, usability evaluation comes into action. It generally happens around the pre-launch phase for a new product and post-launch phase for the updated products. It ensures that the users have a positive experience with this new/updated product.

3. Interface Testing

It focuses on the interaction between servers, one being your application server and the other being the webserver. It consists of checking whether the communication is happening smoothly and the compatibility with network, hardware, and software.

Three main areas to be focused upon are:

a. Application

The application provides access via UI or REST/SOAP API. Therefore, validation makes an important step here. There should be proper validation for both interfaces.

b. Web Server

It is responsible for handling all the incoming requests at the backend. It should be made sure that every incoming request is handled properly and is not declined by the webserver.

c. Database

Data Integrity should not be violated, and the database should provide appropriate outcomes to every query being thrown to it. Direct access should not be permitted, and a proper access restriction message should be returned.

4. Compatibility Testing

It ensures the compatibility of applications across various devices and browsers.

Compatibility test comprises of the ahead mentioned tests:

a. Device Compatibly

Your application should be responsive enough to fit itself into different types of devices of varying sizes and shapes. Device compatibility testing is necessary in today’s time as everyone carries a different device that suits their needs.

b. Browser Compatibility

Different users use different browsers like Firefox, Chrome, Internet Explorer, Safari, etc. as per their likings. Your application should be able to render itself across various browsers. Browser compatibility testing makes sure that there are no issues related to AJAX, JavaScript, HTML, and CSS.

5. Performance Testing

It tests the response time of application when put through varying load conditions. Performance testing can be grouped into the following categories of testing:

a. Stress Test

It tests the maximum limit up to which the web application can accept the load. The application is put through a load above its limits and its behavior is tested after that.

b. Load Test

It tests the response time of the application under varying amounts of load. It also measures the application server and the database’s capacity.

c. Soak Test

It is also known as endurance testing. It measures memory utilization and CPU utilization under high load.

d. Spike Test

As the name suggests, the application is put through fluctuating load and its performance is measured. For example, sudden decrease and increase in the number of users trying to access the application and see how the application handles these spikes.

6. Security Testing

It constitutes one of the most vital testing while performing web application testing. It blocks unauthorized access to the application. It makes sure that the information which is sensitive is safe within the application.

Here are some of the security testing techniques which can be performed by a tester:

  • Unauthorized Access
  • Denial Of Service
  • Identity Spoofing
  • Vulnerability Scanning
  • URL Manipulation
  • SQL Injection
  • Privilege Escalation

Conclusion

Hopefully, this article includes all the testing techniques which may be applied to your application. It will help you test your application seamlessly. Always remember to put your application through various tests in order to get to the loopholes which you may have missed while developing. So write down the plan for your web application testing before making it live.

Recommended Articles

This is a guide to Web Application Testing. Here we discuss advanced testing techniques of web applications like functional testing, usability testing, interface testing, etc. You can also go through our other suggested articles to learn more –

  1. Website Testing Tool
  2. GUI Testing
  3. JMeter load testing
  4. ASP.NET Core Unit Testing
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