Test Binary Search

Testing binary search thoroughly ensures it behaves correctly across all inputs. This post outlines essential test cases and strategies.

Core Test Cases

• Empty array: return -1 or null.
• Single element: target present or absent.
• Target at ends: first or last index.
• Target in middle: standard scenario.
• Duplicate values: any valid index is acceptable.
• Large arrays: verify no overflow in mid calculation.

Property-Based Testing

Use properties like "if target exists, result must be a valid index with that value" to catch bugs systematically.

Performance Checks

Ensure logarithmic time by testing with arrays of increasing size and measuring operations.

Happy testing!