more readme.md

basics/destroy-an-account/anchor/destroy-an-account/README.md

@@ -2,11 +2,32 @@
 
 1. We're creating a `PDA` using [create_user.rs](programs/destroy-an-account/src/instructions/create_user.rs)
    instruction.
-
+    ```rust
+    #[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](programs/destroy-an-account/src/instructions/destroy_user.rs)
    instruction, which uses `Anchor` `AccoutClose` `trait`. 
 
+    ```rust
+    user_account.close(user.to_account_info())?;
+    ```
 
 3. In our test [destroy-an-account.ts](tests/destroy-an-account.ts) we're using `fetchNullable` since we expect 
-   the account to be `null` prior to creation and after closing. 
+   the account to be `null` prior to creation and after closing. 
+
+    ```typescript
+    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);
+   ```