13 What is Functional Testing скачать в хорошем качестве

13 What is Functional Testing

What is Functional Testing? To verify that each function of the software application behaves as specified in the requirement document. Testing all the functionalities by providing appropriate input to verify whether the actual output is matching the expected output or not. Functional testing mainly involves black box testing and it is not concerned about the source code of the application. This testing checks User Interface, APIs, Database, Security, Client/Server communication and other functionality of the Application Under Test. What do you test in Functional Testing? 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. How to do Functional Testing? Understand the Functional Requirements Identify test input or test data based on requirements Compute the expected outcomes with selected test input values Execute test cases Compare actual and computed expected results Functional Testing Types: Unit Testing: It is done by the developers in the developer’s environment. Integration Testing Big Bang Approach, Top-Down Approach, Bottom-Up Approach, and Hybrid Integration approach. System Testing: Verifying the completed system to ensure that the application works as intended or not. User Acceptance Testing: Types of acceptance testing are Alpha, Beta & Gamma.