Guide to integration testing best practices for Soroban smart contracts using JavaScript, covering realistic local network testing, end-to-end user flows, state validation, edge cases, and CI automation with practical examples.
This article provides comprehensive guidance on integration testing for Soroban smart contracts in JavaScript, emphasizing that integration tests are essential beyond unit tests to catch real-world issues like inter-contract interactions, token approvals, and resource limits. It outlines five key practices: using realistic local networks instead of mocks, covering full end-to-end user flows across multiple contracts, controlling state and validating outcomes, testing edge cases and failure paths, and automating tests in CI/CD pipelines. The article includes practical examples using the Soroban CLI, @stellar/soroban-client SDK, and demonstrates a batch liquidation contract test scenario with code samples showing account creation, contract deployment, transaction submission, and resource usage profiling with @57blocks/stellar-resource-usage tool.