How to test Solana Programs with Rust

Rust Testing Framework for Solana

This is a beta version of the Solana Toolkit, and is still a WIP. Please post all feedback as a GitHub issue here.

Add Dependency

Navigate to your program directory and run:

cargo add --dev litesvm

LiteSVM is a fast and lightweight library for testing Solana programs. It works by creating an in-process Solana VM optimized for program developers. This makes it much faster to run and compile than alternatives like solana-program-test and solana-test-validator. In a further break from tradition, it has an ergonomic API with sane defaults and extensive configurability for those who want it.

Minimal Example

use litesvm::LiteSVM;
use solana_program::{message::Message, pubkey::Pubkey, system_instruction::transfer};
use solana_sdk::{signature::Keypair, signer::Signer, transaction::Transaction};
 
let from_keypair = Keypair::new();
let from = from_keypair.pubkey();
let to = Pubkey::new_unique();
 
let mut svm = LiteSVM::new();
svm.airdrop(&from, 10_000).unwrap();
 
let instruction = transfer(&from, &to, 64);
let tx = Transaction::new(
    &[&from_keypair],
    Message::new(&[instruction], Some(&from)),
    svm.latest_blockhash(),
);
let tx_res = svm.send_transaction(tx).unwrap();
 
let from_account = svm.get_account(&from);
let to_account = svm.get_account(&to);
assert_eq!(from_account.unwrap().lamports, 4936);
assert_eq!(to_account.unwrap().lamports, 64);

Additional Resources

Last updated on

Add Dependency

LiteSVM Overview

Minimal Example

Additional Resources

Rust Testing Framework for Solana

Add Dependency

LiteSVM Overview

Minimal Example

Additional Resources

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