diff --git a/programs/config/src/config_processor.rs b/programs/config/src/config_processor.rs
index 2f4739318d..8d6f2defa6 100644
--- a/programs/config/src/config_processor.rs
+++ b/programs/config/src/config_processor.rs
@@ -94,4 +94,396 @@ pub fn process_instruction(
 }
 
 #[cfg(test)]
-mod tests {}
+mod tests {
+    use super::*;
+    use crate::{config_instruction, get_config_data, id, ConfigKeys, ConfigState};
+    use bincode::serialized_size;
+    use serde_derive::{Deserialize, Serialize};
+    use solana_sdk::{
+        account::{create_keyed_is_signer_accounts, Account},
+        signature::{Keypair, KeypairUtil},
+        system_instruction::SystemInstruction,
+    };
+
+    #[derive(Serialize, Deserialize, Debug, PartialEq)]
+    struct MyConfig {
+        pub item: u64,
+    }
+    impl Default for MyConfig {
+        fn default() -> Self {
+            Self { item: 123456789 }
+        }
+    }
+    impl MyConfig {
+        pub fn new(item: u64) -> Self {
+            Self { item }
+        }
+        pub fn deserialize(input: &[u8]) -> Option<Self> {
+            deserialize(input).ok()
+        }
+    }
+
+    impl ConfigState for MyConfig {
+        fn max_space() -> u64 {
+            serialized_size(&Self::default()).unwrap()
+        }
+    }
+
+    fn create_config_account(keys: Vec<(Pubkey, bool)>) -> (Keypair, Account) {
+        let from_pubkey = Pubkey::new_rand();
+        let config_keypair = Keypair::new();
+        let config_pubkey = config_keypair.pubkey();
+
+        let instructions =
+            config_instruction::create_account::<MyConfig>(&from_pubkey, &config_pubkey, 1, keys);
+
+        let system_instruction = limited_deserialize(&instructions[0].data).unwrap();
+        let space = match system_instruction {
+            SystemInstruction::CreateAccount {
+                lamports: _,
+                space,
+                program_id: _,
+            } => space,
+            _ => panic!("Not a CreateAccount system instruction"),
+        };
+        let mut config_account = Account {
+            data: vec![0; space as usize],
+            ..Account::default()
+        };
+        let mut accounts = vec![(&config_pubkey, true, &mut config_account)];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instructions[1].data),
+            Ok(())
+        );
+
+        (config_keypair, config_account)
+    }
+
+    #[test]
+    fn test_process_create_ok() {
+        solana_logger::setup();
+        let keys = vec![];
+        let (_, config_account) = create_config_account(keys.clone());
+        assert_eq!(
+            Some(MyConfig::default()),
+            deserialize(get_config_data(&config_account.data).unwrap()).ok()
+        );
+    }
+
+    #[test]
+    fn test_process_store_ok() {
+        solana_logger::setup();
+        let keys = vec![];
+        let (config_keypair, mut config_account) = create_config_account(keys.clone());
+        let config_pubkey = config_keypair.pubkey();
+        let my_config = MyConfig::new(42);
+
+        let instruction = config_instruction::store(&config_pubkey, true, keys.clone(), &my_config);
+        let mut accounts = vec![(&config_pubkey, true, &mut config_account)];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instruction.data),
+            Ok(())
+        );
+        assert_eq!(
+            Some(my_config),
+            deserialize(get_config_data(&config_account.data).unwrap()).ok()
+        );
+    }
+
+    #[test]
+    fn test_process_store_fail_instruction_data_too_large() {
+        solana_logger::setup();
+        let keys = vec![];
+        let (config_keypair, mut config_account) = create_config_account(keys.clone());
+        let config_pubkey = config_keypair.pubkey();
+        let my_config = MyConfig::new(42);
+
+        let mut instruction =
+            config_instruction::store(&config_pubkey, true, keys.clone(), &my_config);
+        instruction.data = vec![0; 123]; // <-- Replace data with a vector that's too large
+        let mut accounts = vec![(&config_pubkey, true, &mut config_account)];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instruction.data),
+            Err(InstructionError::InvalidInstructionData)
+        );
+    }
+
+    #[test]
+    fn test_process_store_fail_account0_not_signer() {
+        solana_logger::setup();
+        let keys = vec![];
+        let (config_keypair, mut config_account) = create_config_account(keys.clone());
+        let config_pubkey = config_keypair.pubkey();
+        let my_config = MyConfig::new(42);
+
+        let mut instruction = config_instruction::store(&config_pubkey, true, vec![], &my_config);
+        instruction.accounts[0].is_signer = false; // <----- not a signer
+        let mut accounts = vec![(&config_pubkey, false, &mut config_account)];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instruction.data),
+            Err(InstructionError::MissingRequiredSignature)
+        );
+    }
+
+    #[test]
+    fn test_process_store_with_additional_signers() {
+        solana_logger::setup();
+        let pubkey = Pubkey::new_rand();
+        let signer0_pubkey = Pubkey::new_rand();
+        let signer1_pubkey = Pubkey::new_rand();
+        let keys = vec![
+            (pubkey, false),
+            (signer0_pubkey, true),
+            (signer1_pubkey, true),
+        ];
+        let (config_keypair, mut config_account) = create_config_account(keys.clone());
+        let config_pubkey = config_keypair.pubkey();
+        let my_config = MyConfig::new(42);
+
+        let instruction = config_instruction::store(&config_pubkey, true, keys.clone(), &my_config);
+        let mut signer0_account = Account::default();
+        let mut signer1_account = Account::default();
+        let mut accounts = vec![
+            (&config_pubkey, true, &mut config_account),
+            (&signer0_pubkey, true, &mut signer0_account),
+            (&signer1_pubkey, true, &mut signer1_account),
+        ];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instruction.data),
+            Ok(())
+        );
+        let meta_data: ConfigKeys = deserialize(&config_account.data).unwrap();
+        assert_eq!(meta_data.keys, keys);
+        assert_eq!(
+            Some(my_config),
+            deserialize(get_config_data(&config_account.data).unwrap()).ok()
+        );
+    }
+
+    #[test]
+    fn test_process_store_without_config_signer() {
+        solana_logger::setup();
+        let pubkey = Pubkey::new_rand();
+        let signer0_pubkey = Pubkey::new_rand();
+        let keys = vec![(pubkey, false), (signer0_pubkey, true)];
+        let (config_keypair, _) = create_config_account(keys.clone());
+        let config_pubkey = config_keypair.pubkey();
+        let my_config = MyConfig::new(42);
+
+        let instruction =
+            config_instruction::store(&config_pubkey, false, keys.clone(), &my_config);
+        let mut signer0_account = Account::default();
+        let mut accounts = vec![(&signer0_pubkey, true, &mut signer0_account)];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instruction.data),
+            Err(InstructionError::InvalidAccountData)
+        );
+    }
+
+    #[test]
+    fn test_process_store_with_bad_additional_signer() {
+        solana_logger::setup();
+        let signer0_pubkey = Pubkey::new_rand();
+        let signer1_pubkey = Pubkey::new_rand();
+        let mut signer0_account = Account::default();
+        let mut signer1_account = Account::default();
+        let keys = vec![(signer0_pubkey, true)];
+        let (config_keypair, mut config_account) = create_config_account(keys.clone());
+        let config_pubkey = config_keypair.pubkey();
+        let my_config = MyConfig::new(42);
+
+        let instruction = config_instruction::store(&config_pubkey, true, keys.clone(), &my_config);
+
+        // Config-data pubkey doesn't match signer
+        let mut accounts = vec![
+            (&config_pubkey, true, &mut config_account),
+            (&signer1_pubkey, true, &mut signer1_account),
+        ];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instruction.data),
+            Err(InstructionError::MissingRequiredSignature)
+        );
+
+        // Config-data pubkey not a signer
+        let mut accounts = vec![
+            (&config_pubkey, true, &mut config_account),
+            (&signer0_pubkey, false, &mut signer0_account),
+        ];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instruction.data),
+            Err(InstructionError::MissingRequiredSignature)
+        );
+    }
+
+    #[test]
+    fn test_config_updates() {
+        solana_logger::setup();
+        let pubkey = Pubkey::new_rand();
+        let signer0_pubkey = Pubkey::new_rand();
+        let signer1_pubkey = Pubkey::new_rand();
+        let signer2_pubkey = Pubkey::new_rand();
+        let mut signer0_account = Account::default();
+        let mut signer1_account = Account::default();
+        let mut signer2_account = Account::default();
+        let keys = vec![
+            (pubkey, false),
+            (signer0_pubkey, true),
+            (signer1_pubkey, true),
+        ];
+        let (config_keypair, mut config_account) = create_config_account(keys.clone());
+        let config_pubkey = config_keypair.pubkey();
+        let my_config = MyConfig::new(42);
+
+        let instruction = config_instruction::store(&config_pubkey, true, keys.clone(), &my_config);
+        let mut accounts = vec![
+            (&config_pubkey, true, &mut config_account),
+            (&signer0_pubkey, true, &mut signer0_account),
+            (&signer1_pubkey, true, &mut signer1_account),
+        ];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instruction.data),
+            Ok(())
+        );
+
+        // Update with expected signatures
+        let new_config = MyConfig::new(84);
+        let instruction =
+            config_instruction::store(&config_pubkey, false, keys.clone(), &new_config);
+        let mut accounts = vec![
+            (&config_pubkey, false, &mut config_account),
+            (&signer0_pubkey, true, &mut signer0_account),
+            (&signer1_pubkey, true, &mut signer1_account),
+        ];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instruction.data),
+            Ok(())
+        );
+        let meta_data: ConfigKeys = deserialize(&config_account.data).unwrap();
+        assert_eq!(meta_data.keys, keys);
+        assert_eq!(
+            new_config,
+            MyConfig::deserialize(get_config_data(&config_account.data).unwrap()).unwrap()
+        );
+
+        // Attempt update with incomplete signatures
+        let keys = vec![(pubkey, false), (signer0_pubkey, true)];
+        let instruction =
+            config_instruction::store(&config_pubkey, false, keys.clone(), &my_config);
+        let mut accounts = vec![
+            (&config_pubkey, false, &mut config_account),
+            (&signer0_pubkey, true, &mut signer0_account),
+            (&signer1_pubkey, false, &mut signer1_account),
+        ];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instruction.data),
+            Err(InstructionError::MissingRequiredSignature)
+        );
+
+        // Attempt update with incorrect signatures
+        let keys = vec![
+            (pubkey, false),
+            (signer0_pubkey, true),
+            (signer2_pubkey, true),
+        ];
+        let instruction =
+            config_instruction::store(&config_pubkey, false, keys.clone(), &my_config);
+        let mut accounts = vec![
+            (&config_pubkey, false, &mut config_account),
+            (&signer0_pubkey, true, &mut signer0_account),
+            (&signer2_pubkey, true, &mut signer2_account),
+        ];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instruction.data),
+            Err(InstructionError::MissingRequiredSignature)
+        );
+    }
+
+    #[test]
+    fn test_config_updates_requiring_config() {
+        solana_logger::setup();
+        let pubkey = Pubkey::new_rand();
+        let signer0_pubkey = Pubkey::new_rand();
+        let mut signer0_account = Account::default();
+        let keys = vec![
+            (pubkey, false),
+            (signer0_pubkey, true),
+            (signer0_pubkey, true),
+        ]; // Dummy keys for account sizing
+        let (config_keypair, mut config_account) = create_config_account(keys.clone());
+        let config_pubkey = config_keypair.pubkey();
+        let my_config = MyConfig::new(42);
+
+        let keys = vec![
+            (pubkey, false),
+            (signer0_pubkey, true),
+            (config_keypair.pubkey(), true),
+        ];
+
+        let instruction = config_instruction::store(&config_pubkey, true, keys.clone(), &my_config);
+        let mut accounts = vec![
+            (&config_pubkey, true, &mut config_account),
+            (&signer0_pubkey, true, &mut signer0_account),
+        ];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instruction.data),
+            Ok(())
+        );
+
+        // Update with expected signatures
+        let new_config = MyConfig::new(84);
+        let instruction =
+            config_instruction::store(&config_pubkey, true, keys.clone(), &new_config);
+        let mut accounts = vec![
+            (&config_pubkey, true, &mut config_account),
+            (&signer0_pubkey, true, &mut signer0_account),
+        ];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instruction.data),
+            Ok(())
+        );
+        let meta_data: ConfigKeys = deserialize(&config_account.data).unwrap();
+        assert_eq!(meta_data.keys, keys);
+        assert_eq!(
+            new_config,
+            MyConfig::deserialize(get_config_data(&config_account.data).unwrap()).unwrap()
+        );
+
+        // Attempt update with incomplete signatures
+        let keys = vec![(pubkey, false), (config_keypair.pubkey(), true)];
+        let instruction = config_instruction::store(&config_pubkey, true, keys.clone(), &my_config);
+        let mut accounts = vec![(&config_pubkey, true, &mut config_account)];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instruction.data),
+            Err(InstructionError::MissingRequiredSignature)
+        );
+    }
+
+    #[test]
+    fn test_config_initialize_no_panic() {
+        let from_pubkey = Pubkey::new_rand();
+        let config_pubkey = Pubkey::new_rand();
+        let instructions =
+            config_instruction::create_account::<MyConfig>(&from_pubkey, &config_pubkey, 1, vec![]);
+        let mut accounts = vec![];
+        let mut keyed_accounts = create_keyed_is_signer_accounts(&mut accounts);
+        assert_eq!(
+            process_instruction(&id(), &mut keyed_accounts, &instructions[1].data),
+            Err(InstructionError::NotEnoughAccountKeys)
+        );
+    }
+}
diff --git a/programs/config_tests/Cargo.toml b/programs/config_tests/Cargo.toml
deleted file mode 100644
index f34f1fccbf..0000000000
--- a/programs/config_tests/Cargo.toml
+++ /dev/null
@@ -1,23 +0,0 @@
-[package]
-name = "solana-config-tests"
-version = "0.22.0"
-description = "Solana config api tests"
-authors = ["Solana Maintainers <maintainers@solana.com>"]
-repository = "https://github.com/solana-labs/solana"
-license = "Apache-2.0"
-homepage = "https://solana.com/"
-edition = "2018"
-
-[dependencies]
-bincode = "1.2.0"
-log = "0.4.8"
-serde = "1.0.103"
-serde_derive = "1.0.103"
-solana-logger = { path = "../../logger", version = "0.22.0" }
-solana-sdk = { path = "../../sdk", version = "0.22.0" }
-solana-config-program = { path = "../config", version = "0.22.0" }
-
-
-[dev-dependencies]
-solana-runtime = { path = "../../runtime", version = "0.22.0" }
-assert_matches = "1.3.0"
diff --git a/programs/config_tests/tests/config_processor.rs b/programs/config_tests/tests/config_processor.rs
deleted file mode 100644
index 939d6967c2..0000000000
--- a/programs/config_tests/tests/config_processor.rs
+++ /dev/null
@@ -1,392 +0,0 @@
-//! Config program
-
-use bincode::{deserialize, serialized_size};
-use serde_derive::{Deserialize, Serialize};
-use solana_config_program::{
-    config_instruction, config_processor::process_instruction, get_config_data, id, ConfigKeys,
-    ConfigState,
-};
-use solana_runtime::{bank::Bank, bank_client::BankClient};
-use solana_sdk::{
-    client::SyncClient,
-    genesis_config::create_genesis_config,
-    instruction::InstructionError,
-    message::Message,
-    pubkey::Pubkey,
-    signature::{Keypair, KeypairUtil},
-    system_instruction,
-    transaction::TransactionError,
-};
-
-#[derive(Serialize, Deserialize, Debug, PartialEq)]
-struct MyConfig {
-    pub item: u64,
-}
-impl Default for MyConfig {
-    fn default() -> Self {
-        Self { item: 123456789 }
-    }
-}
-impl MyConfig {
-    pub fn new(item: u64) -> Self {
-        Self { item }
-    }
-    pub fn deserialize(input: &[u8]) -> Option<Self> {
-        deserialize(input).ok()
-    }
-}
-
-impl ConfigState for MyConfig {
-    fn max_space() -> u64 {
-        serialized_size(&Self::default()).unwrap()
-    }
-}
-
-fn create_bank(lamports: u64) -> (Bank, Keypair) {
-    let (genesis_config, mint_keypair) = create_genesis_config(lamports);
-    let mut bank = Bank::new(&genesis_config);
-    bank.add_instruction_processor(id(), process_instruction);
-    (bank, mint_keypair)
-}
-
-fn create_config_account(
-    bank: Bank,
-    mint_keypair: &Keypair,
-    keys: Vec<(Pubkey, bool)>,
-) -> (BankClient, Keypair) {
-    let config_keypair = Keypair::new();
-    let config_pubkey = config_keypair.pubkey();
-
-    let bank_client = BankClient::new(bank);
-    bank_client
-        .send_message(
-            &[mint_keypair, &config_keypair],
-            Message::new(config_instruction::create_account::<MyConfig>(
-                &mint_keypair.pubkey(),
-                &config_pubkey,
-                1,
-                keys,
-            )),
-        )
-        .expect("new_account");
-
-    (bank_client, config_keypair)
-}
-
-#[test]
-fn test_process_create_ok() {
-    solana_logger::setup();
-    let (bank, mint_keypair) = create_bank(10_000);
-    let (bank_client, config_keypair) = create_config_account(bank, &mint_keypair, vec![]);
-    let config_account_data = bank_client
-        .get_account_data(&config_keypair.pubkey())
-        .unwrap()
-        .unwrap();
-    assert_eq!(
-        Some(MyConfig::default()),
-        deserialize(get_config_data(&config_account_data).unwrap()).ok()
-    );
-}
-
-#[test]
-fn test_process_store_ok() {
-    solana_logger::setup();
-    let (bank, mint_keypair) = create_bank(10_000);
-    let keys = vec![];
-    let (bank_client, config_keypair) = create_config_account(bank, &mint_keypair, keys.clone());
-    let config_pubkey = config_keypair.pubkey();
-
-    let my_config = MyConfig::new(42);
-
-    let instruction = config_instruction::store(&config_pubkey, true, keys.clone(), &my_config);
-    let message = Message::new_with_payer(vec![instruction], Some(&mint_keypair.pubkey()));
-
-    bank_client
-        .send_message(&[&mint_keypair, &config_keypair], message)
-        .unwrap();
-
-    let config_account_data = bank_client
-        .get_account_data(&config_pubkey)
-        .unwrap()
-        .unwrap();
-    assert_eq!(
-        Some(my_config),
-        deserialize(get_config_data(&config_account_data).unwrap()).ok()
-    );
-}
-
-#[test]
-fn test_process_store_fail_instruction_data_too_large() {
-    solana_logger::setup();
-    let (bank, mint_keypair) = create_bank(10_000);
-    let (bank_client, config_keypair) = create_config_account(bank, &mint_keypair, vec![]);
-    let config_pubkey = config_keypair.pubkey();
-
-    let my_config = MyConfig::new(42);
-
-    let mut instruction = config_instruction::store(&config_pubkey, true, vec![], &my_config);
-    instruction.data = vec![0; 123]; // <-- Replace data with a vector that's too large
-    let message = Message::new(vec![instruction]);
-    bank_client
-        .send_message(&[&config_keypair], message)
-        .unwrap_err();
-}
-
-#[test]
-fn test_process_store_fail_account0_not_signer() {
-    solana_logger::setup();
-    let (bank, mint_keypair) = create_bank(10_000);
-    let system_keypair = Keypair::new();
-    let system_pubkey = system_keypair.pubkey();
-
-    bank.transfer(42, &mint_keypair, &system_pubkey).unwrap();
-    let (bank_client, config_keypair) = create_config_account(bank, &mint_keypair, vec![]);
-    let config_pubkey = config_keypair.pubkey();
-
-    let transfer_instruction =
-        system_instruction::transfer(&system_pubkey, &Pubkey::new_rand(), 42);
-    let my_config = MyConfig::new(42);
-    let mut store_instruction = config_instruction::store(&config_pubkey, true, vec![], &my_config);
-    store_instruction.accounts[0].is_signer = false; // <----- not a signer
-
-    let message = Message::new(vec![transfer_instruction, store_instruction]);
-    bank_client
-        .send_message(&[&system_keypair], message)
-        .unwrap_err();
-}
-
-#[test]
-fn test_process_store_with_additional_signers() {
-    solana_logger::setup();
-    let (bank, mint_keypair) = create_bank(10_000);
-    let pubkey = Pubkey::new_rand();
-    let signer0 = Keypair::new();
-    let signer1 = Keypair::new();
-    let keys = vec![
-        (pubkey, false),
-        (signer0.pubkey(), true),
-        (signer1.pubkey(), true),
-    ];
-    let (bank_client, config_keypair) = create_config_account(bank, &mint_keypair, keys.clone());
-    let config_pubkey = config_keypair.pubkey();
-
-    let my_config = MyConfig::new(42);
-
-    let instruction = config_instruction::store(&config_pubkey, true, keys.clone(), &my_config);
-    let message = Message::new_with_payer(vec![instruction], Some(&mint_keypair.pubkey()));
-
-    bank_client
-        .send_message(
-            &[&mint_keypair, &config_keypair, &signer0, &signer1],
-            message,
-        )
-        .unwrap();
-
-    let config_account_data = bank_client
-        .get_account_data(&config_pubkey)
-        .unwrap()
-        .unwrap();
-    let meta_data: ConfigKeys = deserialize(&config_account_data).unwrap();
-    assert_eq!(meta_data.keys, keys);
-    assert_eq!(
-        Some(my_config),
-        deserialize(get_config_data(&config_account_data).unwrap()).ok()
-    );
-}
-
-#[test]
-fn test_process_store_without_config_signer() {
-    solana_logger::setup();
-    let (bank, mint_keypair) = create_bank(10_000);
-    let pubkey = Pubkey::new_rand();
-    let signer0 = Keypair::new();
-    let keys = vec![(pubkey, false), (signer0.pubkey(), true)];
-    let (bank_client, config_keypair) = create_config_account(bank, &mint_keypair, keys.clone());
-    let config_pubkey = config_keypair.pubkey();
-
-    let my_config = MyConfig::new(42);
-
-    let instruction = config_instruction::store(&config_pubkey, false, keys.clone(), &my_config);
-    let message = Message::new_with_payer(vec![instruction], Some(&mint_keypair.pubkey()));
-
-    bank_client
-        .send_message(&[&mint_keypair, &signer0], message)
-        .unwrap_err();
-}
-
-#[test]
-fn test_process_store_with_bad_additional_signer() {
-    solana_logger::setup();
-    let (bank, mint_keypair) = create_bank(10_000);
-    let signer0 = Keypair::new();
-    let signer1 = Keypair::new();
-    let keys = vec![(signer0.pubkey(), true)];
-    let (bank_client, config_keypair) = create_config_account(bank, &mint_keypair, keys.clone());
-    let config_pubkey = config_keypair.pubkey();
-
-    let my_config = MyConfig::new(42);
-
-    // Config-data pubkey doesn't match signer
-    let instruction = config_instruction::store(&config_pubkey, true, keys.clone(), &my_config);
-    let mut message =
-        Message::new_with_payer(vec![instruction.clone()], Some(&mint_keypair.pubkey()));
-    message.account_keys[2] = signer1.pubkey();
-    bank_client
-        .send_message(&[&mint_keypair, &config_keypair, &signer1], message)
-        .unwrap_err();
-
-    // Config-data pubkey not a signer
-    let mut message = Message::new_with_payer(vec![instruction], Some(&mint_keypair.pubkey()));
-    message.header.num_required_signatures = 2;
-    bank_client
-        .send_message(&[&mint_keypair, &config_keypair], message)
-        .unwrap_err();
-}
-
-#[test]
-fn test_config_updates() {
-    solana_logger::setup();
-    let (bank, mint_keypair) = create_bank(10_000);
-    let pubkey = Pubkey::new_rand();
-    let signer0 = Keypair::new();
-    let signer1 = Keypair::new();
-    let keys = vec![
-        (pubkey, false),
-        (signer0.pubkey(), true),
-        (signer1.pubkey(), true),
-    ];
-    let (bank_client, config_keypair) = create_config_account(bank, &mint_keypair, keys.clone());
-    let config_pubkey = config_keypair.pubkey();
-
-    let my_config = MyConfig::new(42);
-
-    let instruction = config_instruction::store(&config_pubkey, true, keys.clone(), &my_config);
-    let message = Message::new_with_payer(vec![instruction], Some(&mint_keypair.pubkey()));
-
-    bank_client
-        .send_message(
-            &[&mint_keypair, &config_keypair, &signer0, &signer1],
-            message,
-        )
-        .unwrap();
-
-    // Update with expected signatures
-    let new_config = MyConfig::new(84);
-    let instruction = config_instruction::store(&config_pubkey, false, keys.clone(), &new_config);
-    let message = Message::new_with_payer(vec![instruction], Some(&mint_keypair.pubkey()));
-    bank_client
-        .send_message(&[&mint_keypair, &signer0, &signer1], message)
-        .unwrap();
-
-    let config_account_data = bank_client
-        .get_account_data(&config_pubkey)
-        .unwrap()
-        .unwrap();
-    let meta_data: ConfigKeys = deserialize(&config_account_data).unwrap();
-    assert_eq!(meta_data.keys, keys);
-    assert_eq!(
-        new_config,
-        MyConfig::deserialize(get_config_data(&config_account_data).unwrap()).unwrap()
-    );
-
-    // Attempt update with incomplete signatures
-    let keys = vec![(pubkey, false), (signer0.pubkey(), true)];
-    let instruction = config_instruction::store(&config_pubkey, false, keys.clone(), &my_config);
-    let message = Message::new_with_payer(vec![instruction], Some(&mint_keypair.pubkey()));
-    bank_client
-        .send_message(&[&mint_keypair, &signer0], message)
-        .unwrap_err();
-
-    // Attempt update with incorrect signatures
-    let signer2 = Keypair::new();
-    let keys = vec![
-        (pubkey, false),
-        (signer0.pubkey(), true),
-        (signer2.pubkey(), true),
-    ];
-    let instruction = config_instruction::store(&config_pubkey, false, keys.clone(), &my_config);
-    let message = Message::new_with_payer(vec![instruction], Some(&mint_keypair.pubkey()));
-    bank_client
-        .send_message(&[&mint_keypair, &signer0, &signer2], message)
-        .unwrap_err();
-}
-
-#[test]
-fn test_config_updates_requiring_config() {
-    solana_logger::setup();
-    let (bank, mint_keypair) = create_bank(10_000);
-    let pubkey = Pubkey::new_rand();
-    let signer0 = Keypair::new();
-    let keys = vec![
-        (pubkey, false),
-        (signer0.pubkey(), true),
-        (signer0.pubkey(), true),
-    ]; // Dummy keys for account sizing
-    let (bank_client, config_keypair) = create_config_account(bank, &mint_keypair, keys.clone());
-    let config_pubkey = config_keypair.pubkey();
-    let keys = vec![
-        (pubkey, false),
-        (signer0.pubkey(), true),
-        (config_keypair.pubkey(), true),
-    ];
-
-    let my_config = MyConfig::new(42);
-
-    let instruction = config_instruction::store(&config_pubkey, true, keys.clone(), &my_config);
-    let message = Message::new_with_payer(vec![instruction], Some(&mint_keypair.pubkey()));
-
-    bank_client
-        .send_message(&[&mint_keypair, &config_keypair, &signer0], message)
-        .unwrap();
-
-    // Update with expected signatures
-    let new_config = MyConfig::new(84);
-    let instruction = config_instruction::store(&config_pubkey, true, keys.clone(), &new_config);
-    let message = Message::new_with_payer(vec![instruction], Some(&mint_keypair.pubkey()));
-    bank_client
-        .send_message(&[&mint_keypair, &config_keypair, &signer0], message)
-        .unwrap();
-
-    let config_account_data = bank_client
-        .get_account_data(&config_pubkey)
-        .unwrap()
-        .unwrap();
-    let meta_data: ConfigKeys = deserialize(&config_account_data).unwrap();
-    assert_eq!(meta_data.keys, keys);
-    assert_eq!(
-        new_config,
-        MyConfig::deserialize(get_config_data(&config_account_data).unwrap()).unwrap()
-    );
-
-    // Attempt update with incomplete signatures
-    let keys = vec![(pubkey, false), (config_keypair.pubkey(), true)];
-    let instruction = config_instruction::store(&config_pubkey, true, keys.clone(), &my_config);
-    let message = Message::new_with_payer(vec![instruction], Some(&mint_keypair.pubkey()));
-    bank_client
-        .send_message(&[&mint_keypair, &config_keypair], message)
-        .unwrap_err();
-}
-
-#[test]
-fn test_config_initialize_no_panic() {
-    let (bank, alice_keypair) = create_bank(3);
-    let bank_client = BankClient::new(bank);
-    let config_account = Keypair::new();
-
-    let mut instructions = config_instruction::create_account::<MyConfig>(
-        &alice_keypair.pubkey(),
-        &config_account.pubkey(),
-        1,
-        vec![],
-    );
-    instructions[1].accounts = vec![]; // <!-- Attack! Prevent accounts from being passed into processor.
-
-    let message = Message::new(instructions);
-    assert_eq!(
-        bank_client
-            .send_message(&[&alice_keypair, &config_account], message)
-            .unwrap_err()
-            .unwrap(),
-        TransactionError::InstructionError(1, InstructionError::NotEnoughAccountKeys)
-    );
-}
diff --git a/sdk/src/account.rs b/sdk/src/account.rs
index a4a6154da6..3d66123d9b 100644
--- a/sdk/src/account.rs
+++ b/sdk/src/account.rs
@@ -168,6 +168,17 @@ impl<'a> From<(&'a Pubkey, &'a mut Account)> for KeyedAccount<'a> {
     }
 }
 
+impl<'a> From<(&'a Pubkey, bool, &'a mut Account)> for KeyedAccount<'a> {
+    fn from((key, is_signer, account): (&'a Pubkey, bool, &'a mut Account)) -> Self {
+        KeyedAccount {
+            is_signer,
+            is_writable: true,
+            key,
+            account,
+        }
+    }
+}
+
 impl<'a> From<&'a mut (Pubkey, Account)> for KeyedAccount<'a> {
     fn from((key, account): &'a mut (Pubkey, Account)) -> Self {
         KeyedAccount {
@@ -183,6 +194,20 @@ pub fn create_keyed_accounts(accounts: &mut [(Pubkey, Account)]) -> Vec<KeyedAcc
     accounts.iter_mut().map(Into::into).collect()
 }
 
+pub fn create_keyed_is_signer_accounts<'a>(
+    accounts: &'a mut [(&'a Pubkey, bool, &'a mut Account)],
+) -> Vec<KeyedAccount<'a>> {
+    accounts
+        .iter_mut()
+        .map(|(key, is_signer, account)| KeyedAccount {
+            is_signer: *is_signer,
+            is_writable: false,
+            key,
+            account,
+        })
+        .collect()
+}
+
 pub fn create_keyed_readonly_accounts(accounts: &mut [(Pubkey, Account)]) -> Vec<KeyedAccount> {
     accounts
         .iter_mut()