Functional testing

Intellisqa functional testing services assure the software product aspect and make sure its adequate functioning must not be blocked because of current and future prospect. In functional testing primarily the testing of the functions of parts or system is completed. It refers to activities that verify a particular action or function of the code. Functions are tested by filling them input and check the output. Functional testing ensures that the need is properly fulfilled by the application. This type of testing is not anxious with how processing appear, but rather, with the results of processing.

Functional testing verifies that each part of the software application operates in conformance with the requirement stipulation. This testing mainly involves black box testing and it is not concerned about the source code of the application.

In functional testing each and every part of the system is tested by providing appropriate input, verifying the output and comparing the existent results with the expected results.

This testing involves determine of User Interface, APIs, Database, security, client/ server software and functionality of the Application Under Test. Functional testing can be done either manually or using automation.
The prime objective of Functional testing is checking the functionalities of the software system. It mainly concentrates on these four points:-

Mainline functions: Testing the main and important functions of an application.
Basic Usability: To test whether a user can freely navigate through the screens without any difficulties.
Accessibility: Checks the availability of the system for the user.
Error Conditions: To test that proper Error message displayed if user faces any Error in application or not.

Types of Functional testing are:

Black Box testing
Integration Testing
Regression Testing
Sanity Testing
Smoke Testing
Unit Testing
User Acceptance testing
White box testing