Stellar: The Definitive Guide to Testing Smart Contracts on Stellar

The blog emphasizes the significance of testing in the development of Stellar smart contracts, drawing from the scientific method to ensure reliability and safety. Different testing strategies are discussed, including unit tests that focus on specific contract functionalities, integration tests using the Soroban Rust SDK for testing across components, and fuzzing for random data testing to uncover unexpected behavior. Differential testing is highlighted for ensuring new and existing contract versions behave consistently. Mutation testing and code coverage tools, such as cargo-llvm-cov and cargo-mutants, assist in identifying untested code. Stellar’s provision of a real Soroban Environment enhances testing reliability as it tests against real conditions rather than simulations.