Functional testing services at Oniyosys cover end-to-end software testing right up to user acceptance testing with complete system integration and acceptance. During our functional testing process, we check the programs thoroughly for any bugs which may not be visible during the normal testing process. Our functional testing module is applicable for both new applications and as well as existing applications with added features. Let’s discuss our functional testing –
Functional Testing is a testing technique that is used to test the features/functionality of the system or Software, should cover all the scenarios including failure paths and boundary cases. This testing mainly involves black box testing and it is not concerned about the source code of the application.
Each and every functionality of the system is tested by providing appropriate input, verifying the output and comparing the actual results with the expected results. This testing involves checking of User Interface, APIs, Database, security, client/ server applications and functionality of the Application Under Test. The testing can be done either manually or using automation.
What do you test in Functional Testing?
The prime objective of Functional testing is checking the functionalities of the software system. It mainly concentrates on –
Mainline functions: Testing the main functions of an application
Basic Usability: It involves basic usability testing of the system. It checks whether a user can freely navigate through the screens without any difficulties.
Accessibility: Checks the accessibility of the system for the user
Error Conditions: Usage of testing techniques to check for error conditions. It checks whether suitable error messages are displayed.
Functional Testing Process:
In order to functionally test an application, following steps must be observed.
1. Identify Test Input ( test data )
2. Compute The Expected Outcomes With The Selected Test Input Values
3.Execute Test Cases
4.Comparison Of Actual and Computed Expected Result
Types of Functional Testing :
Mainly major functional testing techniques are of two types –
1. Black Box and 2. White Box Testing
The other major Functional Testing techniques include:
2. Integration Testing
3. Smoke Testing
4. User Acceptance Testing
5. Localization Testing
6. Interface Testing
7. Usability Testing
8. System Testing
9. Regression Testing
10. Globalization Testing
Functional testing tools:
There are several tools available in the market to perform functional testing. They are explained as follows:
Selenium – Popular Open Source Functional Testing Tool.
QTP – Very user-friendly Functional Test tool by HP.
JUnit– Used mainly for Java applications and this can be used in Unit and system testing.
soapUI – This is an open source functional testing tool, mainly used for Web service testing. It supports multiple protocols such HTTP, SOAP and JDBC.
Watir – This is a functional testing tool for web applications. It supports tests executed at the web browser and uses ruby scripting language.
Functional testing is more effective when the test conditions are created directly from user/business requirements. When test conditions are created from the system documentation (system requirements/ design documents), the defects in that documentation will not be detected through testing and this may be the cause of end-users’ wrath when
they finally use the software.
At Oniyosys our functional testing is the most in-demand service of the company with scores of successfully completed projects and they span a wide spectrum of activities from integration testing to user acceptance testing to production release support.