What are the types of functional testing?

Answer Posted / dumbest1

As per ISO 9126, Functional testing is related to what a
system does i.e. it's functions. Functional testing is also
referred to as Black Box Testing but it is not entirely true
as Black Box Testing also consists of Non-Functional Testing
as well.

Functional Testing can be done focusing on suitability,
interoperability, security, accuracy and compliance.

It can be done from two perspectives: requirements-based and
business-process-based.

Requirement-Based Testing includes:
1. Equivalence Partitioning
2. Boundary Value Analysis
3. Decision Tables
4. State Transition Testing

Business-process-based testing:
1. Use case testing

Non-functional testing, on the other hand, can include
performance testing, load testing, stress testing, usability
testing, maintainability testing, reliability testing and
portability testing. It is basically checking 'How Well' the
system works.

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