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Using Foundry to Deploy Smart Contracts

This tutorial will guide you through the process of deploying a smart contract on Status Network testnet using Foundry.

Prerequisites​

Before you begin, ensure you have the following:

  • Foundry: Install from the official Foundry book
  • Ethereum Wallet: A private key for Status Network testnet
  • Testnet ETH: You'll need Status Network testnet ETH
    • Get Status Network testnet ETH from our Faucet
  • Basic Knowledge: Familiarity with Solidity and command line

What You'll Accomplish​

  • Initialize a Foundry project
  • Write a basic Ethereum smart contract
  • Configure Foundry for Status Network testnet deployment
  • Deploy your smart contract

Steps​

1. Initialize a Foundry Project​

First, create a new Foundry project:

# Create a new project
forge init hello_status
cd hello_status

# Create .env file for private key
touch .env
echo "PRIVATE_KEY=your_private_key_here" >> .env

2. Writing the Smart Contract​

Replace src/Counter.sol with our HelloWorld.sol:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

contract HelloWorld {
    string public greet = "Hello, Status Network!";

    function setGreet(string memory _greet) public {
        greet = _greet;
    }

    function getGreet() public view returns (string memory) {
        return greet;
    }
}

3. Configure Foundry for Status Network​

Create or update foundry.toml:

[profile.default]
src = "src"
out = "out"
libs = ["lib"]
solc = "0.8.24"

[rpc_endpoints]
status_testnet = "https://public.sepolia.rpc.status.network"

4. Deploy the Contract​

Create a deployment script script/Deploy.s.sol:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "forge-std/Script.sol";
import "../src/HelloWorld.sol";

contract DeployScript is Script {
    function run() external {
        uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY");
        
        vm.startBroadcast(deployerPrivateKey);
        
        HelloWorld hello = new HelloWorld();
        console.log("HelloWorld deployed to:", address(hello));
        
        vm.stopBroadcast();
    }
}

Deploy using forge:

# Load environment variables
source .env

# Deploy to Status Network testnet
forge script script/Deploy.s.sol:DeployScript \
    --rpc-url https://public.sepolia.rpc.status.network \
    --broadcast \

5. Interact with the Contract​

Create a script to interact with your contract script/Interact.s.sol:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "forge-std/Script.sol";
import "../src/HelloWorld.sol";

contract InteractScript is Script {
    function run() external {
        uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY");
        address contractAddress = address(0x...); // Replace with your contract address
        
        vm.startBroadcast(deployerPrivateKey);
        
        HelloWorld hello = HelloWorld(contractAddress);
        
        // Read current greeting
        string memory currentGreeting = hello.getGreet();
        console.log("Current greeting:", currentGreeting);
        
        // Update greeting
        hello.setGreet("Hello from Foundry!");
        
        vm.stopBroadcast();
    }
}

Run the interaction script:

forge script script/Interact.s.sol:InteractScript \
    --rpc-url https://public.sepolia.rpc.status.network \
    --broadcast

6. Cast Commands for Quick Interactions​

You can also use cast to interact with your contract:

# Read the greeting
cast call <CONTRACT_ADDRESS> "getGreet()" \
    --rpc-url https://public.sepolia.rpc.status.network

# Set a new greeting
cast send <CONTRACT_ADDRESS> "setGreet(string)" "New greeting!" \
    --private-key $PRIVATE_KEY \
    --rpc-url https://public.sepolia.rpc.status.network

7. Testing​

Create a test file test/HelloWorld.t.sol:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "forge-std/Test.sol";
import "../src/HelloWorld.sol";

contract HelloWorldTest is Test {
    HelloWorld hello;

    function setUp() public {
        hello = new HelloWorld();
    }

    function testGreeting() public {
        assertEq(hello.getGreet(), "Hello, Status Network!");
        
        hello.setGreet("New greeting");
        assertEq(hello.getGreet(), "New greeting");
    }
}

Run the tests:

forge test

Support​

If you encounter any issues:

Additional Resources​