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::{
client::FuelClient,
fuel_node::{Config, FuelService},
};
// Run the fuel node.
let server = FuelService::new_node(Config::local_node())
.await
.map_err(|err| error!(InfrastructureError, "{err}"))?;
// Create a client that will talk to the node created above.
let client = FuelClient::from(server.bound_address);
assert!(client.health().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, _address) = 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 is a feature defined in the fuels library, allowing 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 = "0.43.0", features = ["fuel-core-lib"] }