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Destroy an Account

  1. We're creating a PDA using create_user.rs instruction.

    #[account(
    init,
    seeds=[User::PREFIX.as_bytes(), user.key().as_ref()],
    payer=user,
    space=User::SIZE,
    bump
    )]
    pub user_account: Box<Account<'info, User>>,
  2. We're closing it using destroy_user.rs instruction, which uses Anchor AccoutClose trait.

    user_account.close(user.to_account_info())?;
  3. In our test destroy-an-account.ts we're using fetchNullable since we expect the account to be null prior to creation and after closing.

    const userAccountBefore = await program.account.user.fetchNullable(userAccountAddress, "processed");
    assert.equal(userAccountBefore, null);
    ...
    ...
    const userAccountAfter = await program.account.user.fetchNullable(userAccountAddress, "processed");
    assert.notEqual(userAccountAfter, null);