ethers-rs/ethers-middleware/tests/signer.rs

use ethers_providers::{Http, Middleware, Provider};

use ethers_core::types::TransactionRequest;
use ethers_middleware::signer::SignerMiddleware;
use ethers_signers::LocalWallet;
use std::{convert::TryFrom, time::Duration};

#[tokio::test]
#[cfg(not(feature = "celo"))]
async fn send_eth() {
    use ethers_core::utils::Ganache;

    let ganache = Ganache::new().spawn();

    // this private key belongs to the above mnemonic
    let wallet: LocalWallet = ganache.keys()[0].clone().into();
    let wallet2: LocalWallet = ganache.keys()[1].clone().into();

    // connect to the network
    let provider = Provider::<Http>::try_from(ganache.endpoint())
        .unwrap()
        .interval(Duration::from_millis(10u64));
    let provider = SignerMiddleware::new(provider, wallet);

    // craft the transaction
    let tx = TransactionRequest::new().to(wallet2.address()).value(10000);

    let balance_before = provider
        .get_balance(provider.address(), None)
        .await
        .unwrap();

    // send it!
    provider.send_transaction(tx, None).await.unwrap();

    let balance_after = provider
        .get_balance(provider.address(), None)
        .await
        .unwrap();

    assert!(balance_before > balance_after);
}

#[tokio::test]
#[cfg(feature = "celo")]
async fn test_send_transaction() {
    // Celo testnet
    let provider = Provider::<Http>::try_from("https://alfajores-forno.celo-testnet.org")
        .unwrap()
        .interval(Duration::from_millis(3000u64));

    // Funded with https://celo.org/developers/faucet
    // Please do not drain this account :)
    let wallet = "d652abb81e8c686edba621a895531b1f291289b63b5ef09a94f686a5ecdd5db1"
        .parse::<LocalWallet>()
        .unwrap();
    let client = SignerMiddleware::new(provider, wallet);

    let balance_before = client.get_balance(client.address(), None).await.unwrap();
    let tx = TransactionRequest::pay(client.address(), 100);
    let tx_hash = client.send_transaction(tx, None).await.unwrap();
    let _receipt = client
        .pending_transaction(tx_hash)
        .confirmations(3)
        .await
        .unwrap();
    let balance_after = client.get_balance(client.address(), None).await.unwrap();
    assert!(balance_before > balance_after);
}