SPL Token + MPL Core Lab

Week 1 assignment: mint an SPL token, mint an NFT with MPL Core, and update its metadata. Also does both optional extras: transfer the NFT to a new owner, and burn it to get the rent back.

All tests run locally with LiteSVM. No wallet, no RPC, no devnet needed.

What it does

• Mints an SPL token and transfers some to another wallet (transfer_checked).
• Mints an NFT using MPL Core, with a name, URI, and update authority.
• Updates the NFT's name and URI as the update authority (and proves a non-authority can't).
• Transfers the NFT to a new owner.
• Burns the NFT and reclaims the rent.

Run it

cargo test -- --nocapture

Both tests should pass:

test spl_token_mint_and_transfer ... ok
test mpl_core_create_update_transfer_and_burn ... ok

Code

• src/lib.rs: instruction builders for each step (mint, transfer, create/update/transfer/burn NFT).
• tests/lab.rs: runs them against LiteSVM and checks the resulting on-chain data, including that only the right authority can update or burn.
• tests/fixtures/mpl_core.so: a copy of the real MPL Core program, so tests don't need devnet.

License

MIT