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Close Account

Two instruction handlers: create_user initializes a PDA User account, and close_user closes it and returns the rent to the user.

  1. create_user initializes the PDA with Anchor's init constraint:

    #[account(
    init,
    payer = user,
    space = User::DISCRIMINATOR.len() + User::INIT_SPACE,
    seeds = [b"USER", user.key().as_ref()],
    bump,
)]
pub user_account: Account<'info, User>,

    See programs/close-account/src/instructions/create_user.rs.

  2. close_user closes the account using Anchor's close constraint, which returns lamports to the given account:

    #[account(
    mut,
    seeds = [b"USER", user.key().as_ref()],
    bump = user_account.bump,
    close = user, // close account and return lamports to user
)]
pub user_account: Account<'info, User>,

    See programs/close-account/src/instructions/close_user.rs.

Tests

Tests live in programs/close-account/tests/test_close_account.rs and run against litesvm. Anchor.toml's scripts.test is cargo test, so anchor test builds the program and runs the Rust tests:

anchor test