Testing Token-2022 Programs with LiteSVM: 37 Checks Run Without a Network

Developers often test Token-2022 on devnet, but its rate limits, slow transactions, and leftover accounts make the test loop cumbersome. LiteSVM instead runs a Solana virtual machine inside the test process, loading the real SPL Token-2022 and Memo programs so transactions execute in milliseconds without network access. The walkthrough presents a small test harness used for 37 checks across six Token-2022 models, runnable with a single command. Key helpers handle sending transactions, funding accounts, computing rent, and reading account state in a form compatible with @solana/spl-token. The author notes the example is educational and unaudited, and that LiteSVM verifies instruction behavior but does not replace an audit or a devnet run.