🚀 How to Deploy a Smart Contract on Conflux eSpace Testnet Using Foundry

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:rocket: How to Deploy a Smart Contract on Conflux eSpace Testnet Using Foundry

Are you ready to explore the power of Foundry while deploying smart contracts on the Conflux eSpace Testnet? Whether you’re just starting or transitioning from other toolchains like Hardhat, this step-by-step guide will walk you through the complete process — from setup to deployment.

:toolbox: What You’ll Learn

  • How to install Foundry
  • How to write and compile a smart contract
  • How to configure for the Conflux eSpace Testnet
  • How to deploy the contract using Foundry

:gear: Prerequisites

  • Node.js (v16 or above)
  • Git installed
  • Basic knowledge of Solidity
  • A funded wallet on the Conflux eSpace Testnet

:package: Installation

1. Install Foundry

First, install Foundry using the official installer:

curl -L https://foundry.paradigm.xyz | bash

2. Update Foundry

After installation, update Foundry to the latest version:

foundryup

Verify installation:

forge --version

:rocket: Usage

Building the Project

Compile your smart contracts:

forge build

Running Tests

Execute the test suite:

forge test

For verbose output:

forge test -vv

:test_tube: Testing

The project includes comprehensive tests for the Counter contract:

  • test_Increment(): Tests the increment functionality
  • testFuzz_SetNumber(): Fuzz testing for the setNumber function

Run tests with:

forge test

:rocket: Deployment

Local Development

  1. Start a local Anvil instance:
anvil
  1. Deploy to local network:
forge script script/Counter.s.sol --rpc-url http://localhost:8545 --private-key 0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80 --broadcast

Conflux Testnet Deployment

  1. Set your private key as an environment variable:
export PRIVATE_KEY="your_private_key_here"
  1. Deploy to Conflux testnet:
forge script script/Counter.s.sol --rpc-url https://evmtestnet.confluxrpc.com --private-key $PRIVATE_KEY --broadcast -g 200

Mainnet Deployment

For mainnet deployment, use the appropriate RPC URL and ensure you have sufficient funds:

forge script script/Counter.s.sol --rpc-url https://evm.confluxrpc.com --private-key $PRIVATE_KEY --broadcast -g 200

:dart: Overview

This project demonstrates a basic counter smart contract with the following features:

  • Increment the counter value
  • Set the counter to a specific value
  • View the current counter value

The contract is built using Foundry, a fast Ethereum development toolkit.

:scroll: Contract Functions

Counter Contract

The Counter contract provides the following functions:

  • number(): View function that returns the current counter value
  • setNumber(uint256 newNumber): Sets the counter to a specific value
  • increment(): Increments the counter by 1

Example Usage

// Set the counter to 10
counter.setNumber(10);

// Increment the counter
counter.increment(); // Now the value is 11

// Get the current value
uint256 currentValue = counter.number();

:wrench: Configuration

The project uses the default Foundry configuration in foundry.toml:

[profile.default]
src = "src"
out = "out"
libs = ["lib"]

:books: Additional Resources