Fund Me Smart Contract Using Foundry

This project demonstrates a Fund Me smart contract, allowing the owner to deploy a contract to initiate a fundraiser and securely withdraw the raised funds.

Prerequistes

• Foundry Installation: Foundry is a prerequisite. Install it using the following script -

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

• Metamask MetaMask is a software cryptocurrency wallet used to interact with the Ethereum blockchain. It allows users to access their Ethereum wallet through a browser extension or mobile app, which can then be used to interact with decentralized applications.

Getting Things Ready

Execute the ensuing steps to prepare the project environment:

1. Clone the Repository: Attain your local copy with:

   git clone https://github.com/iamber12/fund-me-smart-contract-using-foundry

2. Compile the Project: Build the project using foundry:

   forge build

Deployment

Anvil Local Chain Deployment

• For local testnet emulation, deploy using:

  forge script script/DeployFundMe.s.sol

Real-world Testnet/Mainnet Deployment

For this you will need two things as prerequiste - - PRIVATE_KEY: Your metamask account's private key. - SEPOLIA_RPC_URL: The URL of the Sepolia testnet node you're using. You can obtain a free setup of one through Alchemy.

Initiate Deployment

• Proceed with contract deployment using:

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

Testing

We mainly focus on unit and integration test in this project.

Running all the tests

• In order to run all the tests, use the following command:

  forge test

Running a specific test

• In order to run a specific test, use the following command:

  forge test --mt <function_name>

Fork-based Sepolia Testnet Analysis

• To conduct tests on a Sepolia network fork, use:

  forge test --fork-url $SEPOLIA_RPC_URL

• For an overview of test coverage, execute:

  forge coverage

Gas Usage Synopsis

• To get an overview of the gas usage, use the following command:

  forge snapshot

Application

An application of this smart contract would look something like this-

Thanks to Cyfrin. You can find one such implementation in this repo.