CI/CD for smart contracts in Blockchain / Solidity - Mini Project: Build & Apply

CI/CD for Smart Contracts

📖 Scenario: You are working on a blockchain project that uses smart contracts. To make sure your smart contracts are always tested and deployed safely, you want to set up a simple Continuous Integration and Continuous Deployment (CI/CD) pipeline.This pipeline will automatically test your smart contract code and deploy it to a test network when changes are made.

🎯 Goal: Build a basic CI/CD pipeline script that:Defines the smart contract source filesSets a test network configurationRuns tests on the smart contractsDeploys the smart contracts to the test network

📋 What You'll Learn

Create a list of smart contract files

Add a variable for the test network name

Write a command to run smart contract tests

Write a command to deploy smart contracts to the test network

Print deployment success message

💡 Why This Matters

🌍 Real World

Blockchain developers use CI/CD pipelines to automate testing and deployment of smart contracts, ensuring code quality and faster updates.

💼 Career

Understanding CI/CD for smart contracts is valuable for blockchain developer roles and DevOps positions supporting blockchain projects.

1

Define smart contract files

Create a list called contract_files with these exact smart contract filenames: "Token.sol", "Crowdsale.sol", and "Wallet.sol".

Blockchain / Solidity

# Create a list called contract_files with the given filenames
# Your code here

Need a hint?

Use square brackets [] to create a list and include the filenames as strings inside.

2

Set test network configuration

Add a variable called test_network and set it to the string "sepolia" to specify the Ethereum test network.

Blockchain / Solidity

contract_files = ["Token.sol", "Crowdsale.sol", "Wallet.sol"]
# Set the test network name in test_network
# Your code here

Need a hint?

Assign the string "sepolia" to the variable test_network.

3

Run smart contract tests

Write a line that runs the command npx hardhat test using Python's os.system function to execute tests on the smart contracts.

Blockchain / Solidity

import os

contract_files = ["Token.sol", "Crowdsale.sol", "Wallet.sol"]
test_network = "sepolia"
# Run smart contract tests using os.system
# Your code here

Need a hint?

Use os.system to run shell commands from Python.

4

Deploy contracts and print success

Write a line that runs the command npx hardhat run scripts/deploy.js --network sepolia using os.system to deploy the contracts to the test network. Then write a print statement that outputs exactly "Deployment to sepolia successful!".

Blockchain / Solidity

import os

contract_files = ["Token.sol", "Crowdsale.sol", "Wallet.sol"]
test_network = "sepolia"
os.system("npx hardhat test")
# Deploy contracts to sepolia network
# Print deployment success message
# Your code here

Need a hint?

Use os.system to run the deploy command with the --network sepolia option. Then print the success message exactly.