Crate cw_multi_test
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Multitest is a design to simulate a blockchain environment in pure Rust. This allows us to run unit tests that involve contract -> contract, and contract -> bank interactions. This is not intended to be a full blockchain app but to simulate the Cosmos SDK x/wasm module close enough to gain confidence in multi-contract deployements before testing them on a live blockchain.
To understand the design of this module, please refer to ../DESIGN.md
Modules
Structs
- Router is a persisted state. You can query this. Execution generally happens on the RouterCache, which then can be atomically committed or rolled back. We offer .execute() as a wrapper around cache, execute, commit/rollback process.
- Utility to build App in stages. If particular items wont be set, defaults would be used
- Wraps the exported functions from a contract and provides the normalized format Place T4 and E4 at the end, as we just want default placeholders for most contracts that don’t have sudo
Enums
- We use it to allow calling into modules from another module in sudo mode. Things like gov proposals belong here.
Traits
- Interface to call into a Contract
Functions
- Creates new default
App
implementation working with customized exec and query messages. Outside ofApp
implementation to make type elision better.
Type Definitions
- Type alias for default build
App
to make its storing simpler in typical scenario - This is essential to create a custom app with custom handler. let mut app = BasicAppBuilder::<E, Q>::new_custom().with_custom(handler).build();