Move Bank-based tests into unit-tests

programs/budget/src/budget_processor.rs

@@ -158,6 +158,17 @@ mod test {
         (bank, mint_keypair)
     }
 
+    #[test]
+    fn test_budget_payment() {
+        let (bank, mint_keypair) = create_bank(10_000);
+        let alice_client = BankClient::new(&bank, mint_keypair);
+        let alice_pubkey = alice_client.pubkey();
+        let bob_pubkey = Keypair::new().pubkey();
+        let script = BudgetInstruction::new_payment_script(&alice_pubkey, &bob_pubkey, 100);
+        alice_client.process_script(script).unwrap();
+        assert_eq!(bank.get_balance(&bob_pubkey), 100);
+    }
+
     #[test]
     fn test_unsigned_witness_key() {
         let (bank, mint_keypair) = create_bank(10_000);

programs/budget/src/lib.rs

@@ -1,6 +1,6 @@
-mod budget_program;
+mod budget_processor;
 
-use crate::budget_program::process_instruction;
+use crate::budget_processor::process_instruction;
 use log::*;
 use solana_sdk::account::KeyedAccount;
 use solana_sdk::native_program::ProgramError;