Introduction

MultiTest is a suite of testing tools designed to facilitate multi-contract interactions within the CosmWasm ecosystem. Its primary focus is on providing developers with a robust framework for testing complex smart contract interactions and operations involving various Cosmos modules.

The most valuable advantage of using MultiTest is that it allows testing and debugging of smart contracts with access to the Rust source code, eliminating the need to run a complete blockchain node to begin designing the smart contract functionality. Additionally, MultiTest enables the execution of tests significantly faster than on a real blockchain, as it bypasses the overhead associated with network consensus and block production. This results in a more efficient development cycle, allowing for quicker iterations and faster identification of issues.

While MultiTest is a blockchain SIMULATOR, it may happen, that the behavior of the real blockchain might slightly differ in some edge cases. We strongly encourage you to file an issue (opens in a new tab) with a detailed description of such use case to help us improve the MultiTest.

In the upcoming chapters, we provide detailed instructions on installing and getting started with MultiTest, writing unit tests for smart contracts, testing complex interactions between smart contracts and testing smart contract interactions with Cosmos modules.

By the end of these chapters, you will have a comprehensive understanding of how to use MultiTest for testing and debugging smart contracts in various scenarios.