From 56bd04fb38f82c275fd2269a4ac776d8af57724b Mon Sep 17 00:00:00 2001
From: Raushan kumar <raushansinghrajpoot687@gmail.com>
Date: Mon, 12 Jan 2026 18:33:56 +0000
Subject: [PATCH 1/2] feat: add validator scripts and assign instruction test

---
 clients/js/test/assign.test.ts | 54 ++++++++++++++++++++++++++++++++++
 package.json                   |  5 +++-
 2 files changed, 58 insertions(+), 1 deletion(-)
 create mode 100644 clients/js/test/assign.test.ts

diff --git a/clients/js/test/assign.test.ts b/clients/js/test/assign.test.ts
new file mode 100644
index 0000000..3a6cb6c
--- /dev/null
+++ b/clients/js/test/assign.test.ts
@@ -0,0 +1,54 @@
+import { appendTransactionMessageInstruction, fetchEncodedAccount, generateKeyPairSigner, pipe } from '@solana/kit';
+import { it, expect } from 'vitest';
+import { SYSTEM_PROGRAM_ADDRESS, getAssignInstruction, getCreateAccountInstruction } from '../src';
+import {
+    createDefaultSolanaClient,
+    createDefaultTransaction,
+    generateKeyPairSignerWithSol,
+    signAndSendTransaction,
+} from './_setup';
+
+it('assigns a new owner to an account', async () => {
+    // 1. Setup client and payer.
+    const client = createDefaultSolanaClient();
+    const [payer, accountToAssign, newOwner] = await Promise.all([
+        generateKeyPairSignerWithSol(client),
+        generateKeyPairSigner(),
+        generateKeyPairSigner(),
+    ]);
+
+    // 2. Create the account first (so it exists on-chain).
+    // The account needs to exist to be assigned.
+    const space = 0n;
+    const lamports = await client.rpc.getMinimumBalanceForRentExemption(space).send();
+
+    const createAccount = getCreateAccountInstruction({
+        payer,
+        newAccount: accountToAssign,
+        lamports: lamports, // Fix: Use return value directly
+        space,
+        programAddress: SYSTEM_PROGRAM_ADDRESS,
+    });
+
+    // 3. Use getAssignInstruction to change the owner of accountToAssign to newOwner.
+    const assign = getAssignInstruction({
+        account: accountToAssign,
+        programAddress: newOwner.address,
+    });
+
+    // 4. Sign and send the transaction.
+    await pipe(
+        await createDefaultTransaction(client, payer),
+        tx => appendTransactionMessageInstruction(createAccount, tx),
+        tx => appendTransactionMessageInstruction(assign, tx),
+        tx => signAndSendTransaction(client, tx),
+    );
+
+    // 5. Fetch the account data and verify the owner.
+    const fetchedAccount = await fetchEncodedAccount(client.rpc, accountToAssign.address);
+    // In solana/kit, 'programAddress' is the field for the account owner.
+    expect(fetchedAccount).toMatchObject({
+        exists: true,
+        programAddress: newOwner.address,
+    });
+});
diff --git a/package.json b/package.json
index 7dd5ae5..8962646 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,10 @@
     "private": true,
     "scripts": {
         "generate": "pnpm generate:clients",
-        "generate:clients": "codama run --all"
+        "generate:clients": "codama run --all",
+        "validator:start": "solana-test-validator --reset --quiet",
+        "validator:stop": "pkill -f solana-test-validator",
+        "validator:restart": "pnpm validator:stop && pnpm validator:start"
     },
     "devDependencies": {
         "@codama/renderers-js": "^1.5.5",

From 212a8918312520e615258337a160c91dcbbab283 Mon Sep 17 00:00:00 2001
From: Raushan Kumar <raushansinghrajpoot687@gmail.com>
Date: Wed, 21 Jan 2026 14:18:23 +0000
Subject: [PATCH 2/2] chore: address maintainer feedback

---
 clients/js/test/assign.test.ts | 14 ++++++--------
 package.json                   |  5 +----
 2 files changed, 7 insertions(+), 12 deletions(-)

diff --git a/clients/js/test/assign.test.ts b/clients/js/test/assign.test.ts
index 3a6cb6c..51cfa0f 100644
--- a/clients/js/test/assign.test.ts
+++ b/clients/js/test/assign.test.ts
@@ -1,6 +1,6 @@
 import { appendTransactionMessageInstruction, fetchEncodedAccount, generateKeyPairSigner, pipe } from '@solana/kit';
 import { it, expect } from 'vitest';
-import { SYSTEM_PROGRAM_ADDRESS, getAssignInstruction, getCreateAccountInstruction } from '../src';
+import { SYSTEM_PROGRAM_ADDRESS, getAssignInstruction, getTransferSolInstruction } from '../src';
 import {
     createDefaultSolanaClient,
     createDefaultTransaction,
@@ -22,12 +22,10 @@ it('assigns a new owner to an account', async () => {
     const space = 0n;
     const lamports = await client.rpc.getMinimumBalanceForRentExemption(space).send();
 
-    const createAccount = getCreateAccountInstruction({
-        payer,
-        newAccount: accountToAssign,
-        lamports: lamports, // Fix: Use return value directly
-        space,
-        programAddress: SYSTEM_PROGRAM_ADDRESS,
+    const transfer = getTransferSolInstruction({
+        source: payer,
+        destination: accountToAssign.address,
+        amount: lamports,
     });
 
     // 3. Use getAssignInstruction to change the owner of accountToAssign to newOwner.
@@ -39,7 +37,7 @@ it('assigns a new owner to an account', async () => {
     // 4. Sign and send the transaction.
     await pipe(
         await createDefaultTransaction(client, payer),
-        tx => appendTransactionMessageInstruction(createAccount, tx),
+        tx => appendTransactionMessageInstruction(transfer, tx),
         tx => appendTransactionMessageInstruction(assign, tx),
         tx => signAndSendTransaction(client, tx),
     );
diff --git a/package.json b/package.json
index 8962646..7dd5ae5 100644
--- a/package.json
+++ b/package.json
@@ -2,10 +2,7 @@
     "private": true,
     "scripts": {
         "generate": "pnpm generate:clients",
-        "generate:clients": "codama run --all",
-        "validator:start": "solana-test-validator --reset --quiet",
-        "validator:stop": "pkill -f solana-test-validator",
-        "validator:restart": "pnpm validator:stop && pnpm validator:start"
+        "generate:clients": "codama run --all"
     },
     "devDependencies": {
         "@codama/renderers-js": "^1.5.5",