lesson-04-contracts

Contracts and Basic Interaction

🎥 Video 4: Contracts 🎬

Basic Interaction

Three primary ways of interacting with a smart contract using Brownie

1. Scripts
2. Console
3. Tests

CREATE NEW TOKEN

    $ brownie bake token

USING SCRIPTS

Requires only the script name (i.e. filename excluding .py) if the script contains a “main” function

    $ brownie run <script_name>

SCRIPT IMPORTS

Relevant brownie libraries must always be imported when writing scripts

    from brownie import *

TOKEN DEPLOYMENT SYNTAX

    Token.deploy(<name>, <symbol>, <decimals>, <amount>, {‘from’: <owner>}) 

RUNNING SCRIPTS

Also include the function name if you are not calling the “main” function

    $ brownie run <script_name> <function_name>

CONSOLE SCRIPT ACCESS

Execute a script from the brownie console

    >>> run(<script_name>)

TEST FIXTURES

tests/conftest.py contains testing fixtures used in other tests. This will be covered in future tutorials.

BASIC TESTS

Include test_ as prefix in filename and function name i.e. tests/test_mint.py

    def test_<testname>(<fixtures>):
    	assert <condition>

RUNNING TESTS

    $ brownie test <filepath>