feat: add rust litesvm test for close account example (#437)

* add rust litesvm test for close account example

* Update test.rs

Author: Perelyn-sama

Cargo.lock

@@ -19,3 +19,11 @@ custom-panic = []
 
 [lints.rust]
 unexpected_cfgs = { level = "warn", check-cfg = ['cfg(target_os, values("solana"))'] }
+
+[dev-dependencies]
+litesvm = "0.8.1"
+solana-instruction = "3.0.0"
+solana-keypair = "3.0.1"
+solana-native-token = "3.0.0"
+solana-pubkey = "3.0.0"
+solana-transaction = "3.0.1"

basics/close-account/native/program/Cargo.toml

@@ -0,0 +1,72 @@
+use close_account_native_program::state::user::User;
+use litesvm::LiteSVM;
+use solana_instruction::{AccountMeta, Instruction};
+use solana_keypair::{Keypair, Signer};
+use solana_native_token::LAMPORTS_PER_SOL;
+use solana_pubkey::Pubkey;
+use solana_transaction::Transaction;
+
+use close_account_native_program::processor::MyInstruction;
+
+#[test]
+fn test_close_account() {
+    let mut svm = LiteSVM::new();
+
+    let program_id = Pubkey::new_unique();
+    let program_bytes = include_bytes!("../../tests/fixtures/close_account_native_program.so");
+
+    svm.add_program(program_id, program_bytes).unwrap();
+
+    let payer = Keypair::new();
+    svm.airdrop(&payer.pubkey(), LAMPORTS_PER_SOL * 10).unwrap();
+
+    let test_account_pubkey =
+        Pubkey::find_program_address(&[b"USER".as_ref(), &payer.pubkey().as_ref()], &program_id).0;
+
+    // create user ix
+    let data = borsh::to_vec(&MyInstruction::CreateUser(User {
+        name: "Jacob".to_string(),
+    }))
+    .unwrap();
+
+    let ix = Instruction {
+        program_id,
+        accounts: vec![
+            AccountMeta::new(test_account_pubkey, false),
+            AccountMeta::new(payer.pubkey(), true),
+            AccountMeta::new(solana_system_interface::program::ID, false),
+        ],
+        data,
+    };
+
+    let tx = Transaction::new_signed_with_payer(
+        &[ix],
+        Some(&payer.pubkey()),
+        &[&payer],
+        svm.latest_blockhash(),
+    );
+
+    let _ = svm.send_transaction(tx).is_ok();
+
+    // clsose user ix
+    let data = borsh::to_vec(&MyInstruction::CloseUser).unwrap();
+
+    let ix = Instruction {
+        program_id,
+        accounts: vec![
+            AccountMeta::new(test_account_pubkey, false),
+            AccountMeta::new(payer.pubkey(), true),
+            AccountMeta::new(solana_system_interface::program::ID, false),
+        ],
+        data,
+    };
+
+    let tx = Transaction::new_signed_with_payer(
+        &[ix],
+        Some(&payer.pubkey()),
+        &[&payer],
+        svm.latest_blockhash(),
+    );
+
+    let _ = svm.send_transaction(tx).is_ok();
+}