feat: update validator_list helper

Author: juliaaschmidt

program/tests/helpers/mod.rs

@@ -2677,33 +2677,18 @@ pub async fn set_validator_list_to_uninitialized_account(
     let account_size = std::mem::size_of::<state::ValidatorList>();
     let minimum_balance = rent.minimum_balance(account_size);
 
-    // Create a new uninitialized validator list account
-    let new_validator_list = Keypair::new();    
-    let create_account_instruction = system_instruction::create_account(
-        &context.payer.pubkey(),
-        &new_validator_list.pubkey(),
-        minimum_balance,
-        account_size as u64,
-        &id(),
-    );
-    let mut transaction = Transaction::new_with_payer(
-        &[create_account_instruction],
-        Some(&context.payer.pubkey()),
-    );
-    transaction.sign(&[&context.payer, &new_validator_list], context.last_blockhash);
-    context
-        .banks_client
-        .process_transaction(transaction)
-        .await
-        .unwrap();
-    // Get the uninitialized account
-    let uninitialized_account = context
-        .banks_client
-        .get_account(new_validator_list.pubkey())
-        .await
-        .unwrap()
-        .unwrap();
-    // Set the uninitialized account at the validator list address
+    // Create an uninitialized account at the SAME validator list address
+    // This simulates the validator list account being corrupted/uninitialized
+    // while keeping the same pubkey that the stake pool expects
+    let uninitialized_account = solana_sdk::account::Account {
+        lamports: minimum_balance,
+        data: vec![0u8; account_size], // All zeros - truly uninitialized
+        owner: id(), // Owned by stake pool program
+        executable: false,
+        rent_epoch: 0,
+    };
+    
+    // Set the uninitialized account at the original validator list address
     context.set_account(&stake_pool_accounts.validator_list.pubkey(), &uninitialized_account.into());
 }