MultiTest
Introduction
MultiTest is a testing tool designed to facilitate multi-contract interactions within the
CosmWasm ecosystem. Its primary focus is on providing developers with a robust framework for
off-chain testing of complex smart contract interactions and operations involving various Cosmos
modules.
MultiTest is a blockchain SIMULATOR, allowing tested smart contracts to interact as if
they were operating on a real blockchain.
The most valuable advantages of using MultiTest is that it allows for testing and debugging
smart contracts with access to the Rust source code and eliminates the need to run a complete
blockchain node to begin designing the functionality of the contract. 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, even before
the smart contract is deployed on the blockchain.
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
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 integration tests for smart contracts, testing complex interactions between
smart contracts, and testing smart contract interactions with several 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.
To successfully follow the upcoming chapters, a basic knowledge of Rust and Cargo is necessary.