Fuzzing and Invariant Testing
Learn how property-based fuzzing and invariant testing catch edge-case bugs in smart contracts that fixed unit tests miss, using Foundry as the example framework.
Limits of Example Tests
You have written unit tests with specific inputs. But attackers find the one input you did not try. Fixed examples cannot cover the huge space of possible values. This is where fuzzing helps.
What Is Fuzzing?
Fuzz testing runs a test many times with randomly generated inputs. Instead of asserting on one value, you assert a property that should hold for all inputs.
All lessons in this course
- Advanced Testing with Foundry/Hardhat
- Formal Verification Basics
- Mainnet Deployment & Monitoring
- Fuzzing and Invariant Testing