Functional Testing in Software: Definition, Types, and How to Run It 

How We Test Functional Testing

• Functional testing involves verifying the core features of the software to ensure they operate as expected and meet the requirements. Here's how we typically approach functional testing:

  • Requirements Review: We begin by thoroughly reviewing the functional requirements and specifications to understand what the system is expected to do. This helps us define the scope of testing.

  • Test Case Design: Based on the requirements, we create test cases that cover all the features and functionalities. These test cases include both positive (valid inputs) and negative (invalid or unexpected inputs) scenarios to verify the system’s response.

  • Test Execution: We execute the test cases manually or with automated tools, checking the functionality of the software against the expected outcomes. We ensure the system performs as required in various scenarios.

  • Validation of User Interaction: We test how the system interacts with the user, verifying that user inputs lead to the expected outputs, including form submissions, button clicks, and navigation.

  • Integration Testing: We test how different functional modules interact with each other to ensure that data flows correctly between modules and that dependencies are handled properly.

  • Edge Case Testing: We test the application with boundary values or edge cases to ensure that the system behaves as expected under extreme conditions.

  • Reporting and Feedback: After executing the tests, we document the results, highlight any discrepancies or issues, and report back to the development team for resolution.

• Functional testing ensures that all features work according to the client’s specifications and the system meets user expectations.