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cargo add --dev litesvm litesvm-loader solana-keypair solana-signer

cargo add --dev solana-instruction solana-message solana-transaction

use litesvm::LiteSVM;
use litesvm_loader::{deploy_upgradeable_program, set_upgrade_authority};
use solana_keypair::Keypair;
use solana_signer::Signer;

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

    let payer = Keypair::new();
    svm.airdrop(&payer.pubkey(), 10_000_000_000).unwrap();

    // Use the keypair that should own the program ID.
    // For Anchor programs, this is usually target/deploy/<program>-keypair.json.
    let program = Keypair::new();
    let program_bytes = include_bytes!("../target/deploy/my_program.so");

    deploy_upgradeable_program(&mut svm, &payer, &program, program_bytes).unwrap();

    let program_account = svm.get_account(&program.pubkey()).unwrap();
    assert!(program_account.executable);

    let new_authority = Keypair::new();
    set_upgrade_authority(
        &mut svm,
        &payer,
        &program.pubkey(),
        &payer,
        Some(&new_authority.pubkey()),
    )
    .unwrap();
}

use solana_keypair::read_keypair_file;

let program = read_keypair_file("target/deploy/my_program-keypair.json").unwrap();
deploy_upgradeable_program(&mut svm, &payer, &program, program_bytes).unwrap();

use solana_instruction::Instruction;
use solana_message::Message;
use solana_transaction::Transaction;

let instruction = Instruction::new_with_bytes(
    program.pubkey(),
    &[],  // instruction data for your program
    vec![], // account metas for your program
);

let message = Message::new(&[instruction], Some(&payer.pubkey()));
let tx = Transaction::new(&[&payer], message, svm.latest_blockhash());

svm.send_transaction(tx).unwrap();

use solana_keypair::read_keypair_file;

let program = read_keypair_file("target/deploy/my_program-keypair.json").unwrap();
let program_bytes = include_bytes!("../target/deploy/my_program.so");

deploy_upgradeable_program(&mut svm, &payer, &program, program_bytes).unwrap();

set_upgrade_authority(
    &mut svm,
    &payer,
    &program.pubkey(),
    &payer,
    None,
)
.unwrap();