Fixup tests to use rent-exempt accounts (#2717)

associated-token-account/program/tests/process_create_associated_token_account.rs

@@ -67,7 +67,7 @@ async fn test_associated_token_address() {
 }
 
 #[tokio::test]
-async fn test_create_with_a_lamport() {
+async fn test_create_with_fewer_lamports() {
     let wallet_address = Pubkey::new_unique();
     let token_mint_address = Pubkey::new_unique();
     let associated_token_address =
@@ -78,12 +78,13 @@ async fn test_create_with_a_lamport() {
     let rent = banks_client.get_rent().await.unwrap();
     let expected_token_account_balance = rent.minimum_balance(spl_token::state::Account::LEN);
 
-    // Transfer 1 lamport into `associated_token_address` before creating it
+    // Transfer lamports into `associated_token_address` before creating it - enough to be
+    // rent-exempt for 0 data, but not for an initialized token account
     let mut transaction = Transaction::new_with_payer(
         &[system_instruction::transfer(
             &payer.pubkey(),
             &associated_token_address,
-            1,
+            rent.minimum_balance(0),
         )],
         Some(&payer.pubkey()),
     );
@@ -95,7 +96,7 @@ async fn test_create_with_a_lamport() {
             .get_balance(associated_token_address)
             .await
             .unwrap(),
-        1
+        rent.minimum_balance(0)
     );
 
     // Check that the program adds the extra lamports

name-service/program/tests/functional.rs

@@ -43,12 +43,14 @@ async fn test_name_service() {
         None,
     );
 
+    let space = 1_000usize;
+    let rent = ctx.banks_client.get_rent().await.unwrap();
     let create_name_instruction = create(
         program_id,
         NameRegistryInstruction::Create {
             hashed_name: hashed_root_name,
-            lamports: 1_000_000,
-            space: 1_000,
+            lamports: rent.minimum_balance(space + NameRecordHeader::LEN),
+            space: space as u32,
         },
         root_name_account_key,
         ctx.payer.pubkey(),
@@ -91,8 +93,8 @@ async fn test_name_service() {
         program_id,
         NameRegistryInstruction::Create {
             hashed_name,
-            lamports: 1_000_000,
-            space: 1_000,
+            lamports: rent.minimum_balance(space + NameRecordHeader::LEN),
+            space: space as u32,
         },
         name_account_key,
         ctx.payer.pubkey(),