Creating a wallet from a private key

A new wallet with a randomly generated private key can be created by supplying Option<Provider>.

        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));

Alternatively, you can create a wallet from a predefined SecretKey.

        use std::str::FromStr;

        use fuels::{prelude::*, signers::fuel_crypto::SecretKey};

        // Use the test helper to setup a test provider.
        let (provider, _address) = setup_test_provider(vec![], vec![], None, None).await;

        // Setup the private key.
        let secret = SecretKey::from_str(
            "5f70feeff1f229e4a95e1056e8b4d80d0b24b565674860cc213bdb07127ce1b1",
        )?;

        // Create the wallet.
        let _wallet = WalletUnlocked::new_from_private_key(secret, Some(provider));

Note: if None is supplied instead of a provider, any transaction related to the wallet will result in an error until a provider is linked with set_provider(). The optional parameter enables defining owners (wallet addresses) of genesis coins before a provider is launched.