solana-program-examples/basics/hello-solana/native/program/tests/test.rs

use litesvm::LiteSVM;
use solana_instruction::{AccountMeta, Instruction};
use solana_keypair::{Keypair, Signer};
use solana_native_token::LAMPORTS_PER_SOL;
use solana_pubkey::Pubkey;
use solana_transaction::Transaction;

#[test]
fn test_hello_solana() {
    let program_id = Pubkey::new_unique();
    let program_bytes = include_bytes!("../../tests/fixtures/hello_solana_program.so");

    let mut svm = LiteSVM::new();
    svm.add_program(program_id, program_bytes).unwrap();

    let payer = Keypair::new();

    svm.airdrop(&payer.pubkey(), LAMPORTS_PER_SOL * 10).unwrap();

    let ix = Instruction {
        program_id,
        accounts: vec![AccountMeta::new(payer.pubkey(), true)],
        data: vec![0],
    };

    let tx = Transaction::new_signed_with_payer(
        &[ix],
        Some(&payer.pubkey()),
        &[&payer],
        svm.latest_blockhash(),
    );

    assert!(svm.send_transaction(tx).is_ok());
}