Requirement-based test design methods and techniques

Common Techniques

• Equivalence Partitioning: dividing input data into groups expected to behave the same way, testing one representative value per group.
• Boundary Value Analysis: focusing tests specifically at the edges of valid ranges, where defects are most likely to occur.
• Decision Table Testing: mapping combinations of conditions to expected outcomes in a table, useful for complex business rules.
• State Transition Testing: verifying that a system moves correctly between defined states based on specific triggers.

Why These Techniques Matter

These formal techniques help testers achieve strong coverage with a manageable number of test cases, rather than testing every possible input exhaustively.