The quality of a product/service delivered is the number one driving factor for any organization’s success. The trust and credibility that comes from happy customers about a product helps the firm to reach new audiences. A software development organization strives to deliver a quality software product, be it a website, mobile app or website application; that satisfies the customer requirements.

Software testing is an important method used to evaluate the quality of a software product. Functional testing plays a major role in ensuring the product’s functionality as per the functional specifications. Let’s see how functional testing ensures software quality.

Like the Black box testing technique, functional testing involves testing the application by feeding them input and examining the output. Firstly, the functions the software is expected to perform are identified and input data is created. The test cases are executed and the actual and the expected outcomes are compared. In this testing, each and every functionality of the application is tested without the need to understand the underlying implementation or code of the application. It also involves the testing of user accessibility and testing whether suitable error messages are displayed. Functional testing can be performed throughout the development cycle and in the production stage.

While doing functional testing, tester can test the application in the real-time scenario and thus understand the flaws of the application, if there is any. The tester can also check the precision of the application and ensure that the application operates successfully in diverse platforms.

Functional testing can be carried out manually or by employing automation test tools like Selenium, Watir and JUnit.

To conclude, a well-structured functional testing strategy plays a critical role to deliver a secure, smooth and bug-free application that satisfies the user requirements.