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Running simple contracts

The idea of this small tutorial is to introduce how to run simple contracts using starknet_in_rust, specifically how to call external functions given a already declared (contract class defined in the starknet state) and deploy (a given instance of a contract class, with storage assigned to it) contract.

As declare and deploy transactions are currently WIP, we encapsulate all the functionality (declaring, deploying and executing a given entrypoint) in main.rs.

How to use

  • First run make deps in order to setup the environment.

  • Add your contract to this directory.

    • Remember that in order to call functions you must use the external decorator.

    • You also must add %lang starknet at the beggining of the contract.

  • Compile the contract:

    • source starknet-venv/bin/activate
    • starknet-compile your_contract.cairo --output your_contract.json

  • Add a test for your contract calling test_contract passing:

    • Your compiled contract path
    • The entrypoint you are wanting to execute
    • The parameters needed in order to call that entrypoint
    • The expected returned value