FundMe Smart Contract

A decentralized funding contract that allows users to send ETH while ensuring a minimum USD value, Built with Foundry.

📜 Contract Details

• Etherscan verified contract here
• Uses Chainlink Price Feeds for accurate ETH/USD conversion
• Implements withdrawal pattern
• Gas-optimized operations
• Comprehensive test suite

Core Features

• Funding: Users can send ETH (minimum $5 USD equivalent)
• Price Feed Integration: Real-time ETH/USD conversion via Chainlink
• Withdrawal: Only owner can withdraw accumulated funds
• Gas Optimized: Implements gas-efficient withdrawal patterns
• Security: Owner-only functions, secure fund management

Built With

• Foundry - Development framework
• Chainlink - Price Feed Oracle
• Solidity version ^0.8.18

🚀 Getting Started

Prerequisites

• foundry

Installation

1. Clone this repository:

git clone https://github.com/yourusername/foundry-fund-me
cd foundry-fund-me

2. Install dependencies:

forge install

3. Build the project:

forge build

Running Tests

# Run all tests
forge test

# Run tests with gas report
forge test --gas-report

# Run a specific test
forge test --match-test testFunctionName

# Run tests with verbosity
forge test -vv

Usage

Deploy

1. Setup environment variables:

cp .env.example .env
# Add your RPC_URL and PRIVATE_KEY to .env

2. Deploy:

forge script script/DeployFundMe.s.sol --rpc-url $RPC_URL --private-key $PRIVATE_KEY --broadcast

Interact with Contract

Fund the contract:

forge script script/Interactions.s.sol:FundFundMe --rpc-url $RPC_URL --private-key $PRIVATE_KEY --broadcast

Withdraw funds (only owner):

forge script script/Interactions.s.sol:WithdrawFundMe --rpc-url $RPC_URL --private-key $PRIVATE_KEY --broadcast

Testing

The project includes:

• Unit tests
• Integration tests
• Forked network tests

Test Coverage

forge coverage

License

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