validating-edge-finder

What problem does it solve?

Code often fails at the limits of expected behavior (edge cases), leading to unexpected bugs and system instability that manual testing or typical use cases miss. This Skill systematically explores these boundary conditions.

Core Features & Use Cases

• Input Space Mapping: Identifies every input, its type, valid ranges, and documented constraints.
• Boundary Condition Testing: Systematically traces code with values at, just before, and just beyond each boundary.
• Implicit Assumption Identification: Uncovers unvalidated assumptions (e.g., non-empty arrays, positive numbers) where bugs often hide.
• Parameter Interaction Analysis: Examines how combinations of parameters behave, especially when multiple inputs are at their boundaries simultaneously.
• Use Case: When developing a new pagination feature, use this Skill to systematically test edge cases like page=0, pageSize=1, pageSize=MAX_INT, or empty result sets, ensuring robust and stable behavior.

Quick Start

Find edge cases for a function that calculates user discounts based on 'total_amount' and 'loyalty_level'.