Application testing

App testing or application testing is a process by which all applications are tested. In this, usability, functionality, and consistency are ensured.

Why is application testing so important?

  • Testing is crucial because it detects bugs or defaults in an application.
  • Testing ensures the reliability and usability of an application.
  • Testing makes sure that the quality application is delivered to the end-users.
  • Consequently, a well-tested application exhibits a high level of performance.

What are the types of application testing

Mobile application testing

As the name implies, mobile application testing refers to testing mobile applications. It tests for functionality, usability, and consistency. It ensures that there is no defect or bug in mobile applications. There are many types of mobile application testing:

  • Performance testing
  • Functional testing
  • Security testing
  • UI testing
  • Regression testing

Web application testing

Web application testing is a process by which the interface and functionality of web-hosted applications are tested.  Web applications fall into the following categories.

  • Security testing
  • Performance testing
  • Interface testing
  • Compatibility testing
  • Usability testing
  • Functionality testing

Desktop application testing

It is the process by which desktop-based applications are tested. The types of desktop application testing are as follows:

  • UI testing
  • Functional testing
  • Usability testing
  • Operating system compatibility testing
  • Performance testing
  • Security testing

What are the commonly used application testing tools?

App testers use many tools for application testing. Some of the most commonly used application testing tools are as follows:

  • Selenium
  • Cucumber
  • FitNesse
  • UFT
  • Apache JMeter
  • HP Loadrunner

Who performs the application testing?

Keeping it simple, application testers perform crucial functions of evaluating and assessing applications. He ensures that the application is functional, responsive, bug-free, and consistent.

How to become an application tester?

To become an application tester, a person should have a minimum high school diploma degree. But graduation or masters can add value to career opportunities.

App Testers

App testing methodologies

Black box testing or functional testing

In this type of testing, app testers do not know code or internal working. In this type of testing, the app tester provides input. And the actual output is compared with the expected one. Black box strategies involve

Equivalence class approach

Boundary-value approach

Decision table approach

State transition tables approach

White box testing or unit testing

When developers complete coding for any app module, white box testing commences. In this methodology, a tester has prior knowledge about coding.

  • White box strategies involve
  • code coverage analysis
  • path coverage
  • dead code analysis
  • code duplication analysis
  • Infinite loop analysis.

Grey box testing

In this type of testing, app testers have limited amounts of code knowledge.  In this, app testers use a blend of white box and black box strategies. 

Grey box testing involves techniques, such as matrix testing, regression testing, OAT or Orthogonal Array Testing, and Pattern Testing.