PyTest plugin for testing Smart Contracts for Ethereum blockchain.

This library requires the solc executable to be present.

Only versions >=0.4.2 are supported and tested though this library may work with other versions.

solc installation instructions

Install Solidity compiler (solc) using Node Package Manager(npm)

npm install -g solc 

or for Ubuntu(Linux)

sudo add-apt-repository ppa:ethereum/ethereum sudo apt-get update sudo apt-get install solc 

Installation

pip install pytest-cobra 

Clone the repository and then run

pip install -e . -r requirements.txt 

Example MetaCoin picture

# MetaCoin Testing # cobra is pytest fixture def test_metacoin(cobra): # Getting Contract Factory by name metacoin = cobra.contract('MetaCoin') # Getting Contract Instance of MetaCoin metacoin = metacoin.deploy() assert metacoin.getBalance(cobra.accounts[0]) == 10000

pytest --cobra MetaCoin.sol 

solc provides path aliasing allow you to have more reusable project configurations.

pytest --cobra MetaCoin.sol --import_remappings ["zeppeling=/my-zeppelin-checkout-folder"] 

pytest --cobra MetaCoin.sol --allow_paths "/home/meheret,/user,/" 

Compile your contracts into a package (soon to be ethPM-compliant)

solc --combined-json abi,bin,bin-runtime contracts/ > MetaCoin.json 

Testing Contracts.json

pytest --cobra MetaCoin.json 

test: artifact_path: "./build/contracts/" test_paths: ["./tests"] contracts: [ contract: { artifact: "Contract.json", links: ["Contract.json"] } ]

Go check out the PyTest.

• Meheret Tesfaye - Initial work - Cobra

This project is licensed under the MIT License - see the LICENSE file for details