Testing Contracts

Smart contract testing is less about polish and more about survival. Because contracts often manage real value, developers simulate expected and unexpected behavior before deployment instead of learning from failures on mainnet.

Good tests cover happy paths, permission checks, and failure cases. A contract should not only do the right thing when inputs are valid. It should also reject invalid actions clearly and consistently.

This mindset pays off quickly. Each passing test becomes a small proof that the contract behaves as intended, and each failing test gives you a safe place to investigate bugs before they can become expensive public incidents.