You can use the SDK to spin up a local, ideally short-lived Fuel node. Then, you can instantiate a Fuel client, pointing to this node.
use fuels::prelude::{FuelService, Provider};
// Run the fuel node.
let server = FuelService::start(Config::default()).await?;
// Create a client that will talk to the node created above.
let client = Provider::from(server.bound_address()).await?;
assert!(client.healthy().await?);This approach is ideal for contract testing.
You can also use the test helper setup_test_provider() for this:
use fuels::prelude::*;
// Use the test helper to setup a test provider.
let provider = setup_test_provider(vec![], vec![], None, None).await?;
// Create the wallet.
let _wallet = WalletUnlocked::new_random(Some(provider)); You can also use launch_provider_and_get_wallet(), which abstracts away the setup_test_provider() and the wallet creation, all in one single method:
let wallet = launch_provider_and_get_wallet().await?; The fuel-core-lib feature allows us to run a fuel-core node without installing the fuel-core binary on the local machine. Using the fuel-core-lib feature flag entails downloading all the dependencies needed to run the fuel-core node.
fuels = { version = "0.55.0", features = ["fuel-core-lib"] } The rocksdb is an additional feature that, when combined with fuel-core-lib, provides persistent storage capabilities while using fuel-core as a library.
fuels = { version = "0.55.0", features = ["rocksdb"] }