Functional Testing verifies that a system works as specified. It checks if the system does what it’s supposed to do.
Key Aspects:
1. Based on functional requirements
2. Test system behaviour
3. Focuses on user perspective
4. Verifies system outputs
5. Identifies functional defects
Types of Functional Testing:
1. Unit testing
2. Integration testing
3. System testing
4. Acceptance testing
5. Regression testing
Steps:
1. Identify testable functions
2. Create test cases
3. Prepare test data
4. Execute tests
5. Compare results with expected outcomes
Benefits:
1. Ensures system meets requirements
2. Improves software quality
3. Enhances user satisfaction
4. Identifies bugs early
5. Validates business processes
Functional testing is crucial for delivering reliable and effective software systems.