What Functional Testing?
functional testing
Functional testing is a form of testing and a quality assurance process helps to validate a system or component to a variety of functional specifications and requirements outlined. Functional testing is a kind of black box testing as the source code of the application is not considered during the testing process.
The main purpose of the form of software testing is to test every function of the application to provide specific input and output validates against functional requirements.
In simple words, this form of testing to verify that the software performs in a way users expect. As this type of testing is really based on the specifications of the program, also known as specification-based testing. In the process of this testing, QA engineers to focus on validating the system to verify functional specifications and specific set of features to the user's specifications.
Why Functional Testing is required?
Functional testing service
The need for functional testing is very important in validating the quality and functionality of the software. Through this software testing techniques, quality assurance team to verify the functionality of the software-based Software Requirements Specification (SRS) and ensure the system functions according to specifications.
Tests help to check whether the system is fixed to the release and error free. This test does not depend on assumptions about the structure of the system, however, make sure to provide high quality products. Basically, this test method is used to test usability features, certain error conditions, accessibility features joint examination by testing another important function of the software.
What kind of Functional Testing?
type of functional testing
Unit Testing:
Functional testing - Unit Testing
Unit testing is the first phase of software testing in software development life cycle (SDLC). This type of functional testing performed by the developer and they write scripts to validate whether small units work according to the requirements of the application or not.
Component Testing:
-Component functional testing Testing
This type of testing is similar to functional unit testing, but the important difference is that it is done by the examiner and it will examine each object independently of the application with or without isolation of other software objects.
Smoking Tests:
Functional testing - Smoke Testing
Smoke testing is done after each build is released. Type of functional testing is also known as build verification testing. This process helps to test whether all aspects of the test environment running successfully and whether the build is stable or not and justify if a building can be used for further testing process.
Sanity Testing:
Functional testing - Sanity Testing
Sanity testing is usually done after the smoke testing, ie after receiving the software build with minor changes were made. In simple words, it is used to validate code changes introduced continue to work as expected.
Integration tests:
Functional testing - Integration Testing
Integration Testing is one of the important methods of software testing in which individual application modules are combined and tested as a group to identify the function after combining the different modules.
Regression Testing:
regression testing
Functional software testing method is helpful to ensure the new changes made to the code does not affect the features or functionality of existing applications.
System Testing:
Functional Testing System testing
It is also a method of functional testing performed after integration testing. This testing phase system used to validate the integrated software application.
User Acceptance Testing (UAT)
This is the end software testing phase, in which the end user or the client takes the role of test engineers to validate whether the application has been developed to meet the requirements or not. UAT is kind of important functional testing performed prior to moving the application to production.
