move test fn into its own mod (solana-labs#24212)

* move test fn into its own mod

* pub

accounts-bench/src/main.rs

@@ -6,7 +6,10 @@ use {
     rayon::prelude::*,
     solana_measure::measure::Measure,
     solana_runtime::{
-        accounts::{create_test_accounts, update_accounts_bench, Accounts},
+        accounts::{
+            test_utils::{create_test_accounts, update_accounts_bench},
+            Accounts,
+        },
         accounts_db::AccountShrinkThreshold,
         accounts_index::AccountSecondaryIndexes,
         ancestors::Ancestors,

runtime/benches/accounts.rs

@@ -8,7 +8,7 @@ use {
     rand::Rng,
     rayon::iter::{IntoParallelRefIterator, ParallelIterator},
     solana_runtime::{
-        accounts::{create_test_accounts, AccountAddressFilter, Accounts},
+        accounts::{test_utils::create_test_accounts, AccountAddressFilter, Accounts},
         accounts_db::AccountShrinkThreshold,
         accounts_index::{AccountSecondaryIndexes, ScanConfig},
         ancestors::Ancestors,

runtime/src/accounts.rs

@@ -1311,28 +1311,33 @@ pub fn prepare_if_nonce_account<'a>(
     }
 }
 
-pub fn create_test_accounts(
-    accounts: &Accounts,
-    pubkeys: &mut Vec<Pubkey>,
-    num: usize,
-    slot: Slot,
-) {
-    for t in 0..num {
-        let pubkey = solana_sdk::pubkey::new_rand();
-        let account =
-            AccountSharedData::new((t + 1) as u64, 0, AccountSharedData::default().owner());
-        accounts.store_slow_uncached(slot, &pubkey, &account);
-        pubkeys.push(pubkey);
+/// A set of utility functions used for testing and benchmarking
+pub mod test_utils {
+    use super::*;
+
+    pub fn create_test_accounts(
+        accounts: &Accounts,
+        pubkeys: &mut Vec<Pubkey>,
+        num: usize,
+        slot: Slot,
+    ) {
+        for t in 0..num {
+            let pubkey = solana_sdk::pubkey::new_rand();
+            let account =
+                AccountSharedData::new((t + 1) as u64, 0, AccountSharedData::default().owner());
+            accounts.store_slow_uncached(slot, &pubkey, &account);
+            pubkeys.push(pubkey);
+        }
     }
-}
 
-// Only used by bench, not safe to call otherwise accounts can conflict with the
-// accounts cache!
-pub fn update_accounts_bench(accounts: &Accounts, pubkeys: &[Pubkey], slot: u64) {
-    for pubkey in pubkeys {
-        let amount = thread_rng().gen_range(0, 10);
-        let account = AccountSharedData::new(amount, 0, AccountSharedData::default().owner());
-        accounts.store_slow_uncached(slot, pubkey, &account);
+    // Only used by bench, not safe to call otherwise accounts can conflict with the
+    // accounts cache!
+    pub fn update_accounts_bench(accounts: &Accounts, pubkeys: &[Pubkey], slot: u64) {
+        for pubkey in pubkeys {
+            let amount = thread_rng().gen_range(0, 10);
+            let account = AccountSharedData::new(amount, 0, AccountSharedData::default().owner());
+            accounts.store_slow_uncached(slot, pubkey, &account);
+        }
     }
 }
 

runtime/src/serde_snapshot/tests.rs

@@ -2,7 +2,7 @@
 use {
     super::*,
     crate::{
-        accounts::{create_test_accounts, Accounts},
+        accounts::{test_utils::create_test_accounts, Accounts},
         accounts_db::{get_temp_accounts_paths, AccountShrinkThreshold},
         bank::{Bank, StatusCacheRc},
         hardened_unpack::UnpackedAppendVecMap,