Bắt Đầu Nhanh

cargo add --dev litesvm litesvm-token solana-sdk spl-token spl-associated-token-account

// Can create token accounts at ANY address
let token_account = Keypair::new();  // Random address
let create_ix = system_instruction::create_account(
    &payer.pubkey(),
    &token_account.pubkey(),  // Any address you want
    rent,
    165,  // Token account size
    &spl_token::id(),
);
let init_ix = spl_token::instruction::initialize_account(
    &spl_token::id(),
    &token_account.pubkey(),
    &mint,
    &owner.pubkey(),
)?;

// ATA address is ALWAYS the same for owner + mint
let ata = get_associated_token_address(&owner.pubkey(), &mint);
// Address derived from: [owner_pubkey, token_program_id, mint]

// ATA is a PDA owned by the Associated Token Program
let (ata, bump) = Pubkey::find_program_address(
    &[
        owner.as_ref(),
        spl_token::id().as_ref(),
        mint.as_ref(),
    ],
    &spl_associated_token_account::id(),  // ATA program
);

use litesvm::LiteSVM;
use litesvm_token::{
    get_spl_account,
    spl_token::{native_mint::DECIMALS, state::Account as TokenAccount},
    CreateAccount, CreateMint, MintTo, Transfer,
};
use solana_sdk::{
    native_token::LAMPORTS_PER_SOL,
    signature::{Keypair, Signer},
};

#[test]
fn test_create_and_mint_tokens() {
    let mut svm = LiteSVM::new();

    // Create payer account and fund it
    let payer = Keypair::new();
    svm.airdrop(&payer.pubkey(), 10 * LAMPORTS_PER_SOL).unwrap();

    // Create a new SPL token mint with the payer as the mint authority
    let mint = CreateMint::new(&mut svm, &payer)
        .authority(&payer.pubkey())
        .decimals(DECIMALS)
        .send()
        .unwrap();

    // Create a token account for the payer
    let token_account = CreateAccount::new(&mut svm, &payer, &mint)
        .owner(&payer.pubkey())
        .send()
        .unwrap();

    // Mint tokens into the payer's token account
    MintTo::new(&mut svm, &payer, &mint, &token_account, 1000)
        .owner(&payer)
        .send()
        .unwrap();

    // Verify balance
    let token_account: TokenAccount = get_spl_account(&svm, &token_account).unwrap();
    let account_balance = token_account.amount;
    assert_eq!(account_balance, 1000)
}

// SOL has 9 decimals
let one_sol = 10_u64.pow(9);  // 1_000_000_000 lamports

// USDC has 6 decimals
let one_usdc = 10_u64.pow(6); // 1_000_000 micro-USDC

// Always account for decimals in calculations
let amount_tokens = 100;
let amount_raw = amount_tokens * 10_u64.pow(decimals as u32);