ws test

jest.config.js

@@ -0,0 +1,5 @@
+/** @type {import('ts-jest').JestConfigWithTsJest} */
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+};

package.json

@@ -9,6 +9,8 @@
   },
   "devDependencies": {
     "@types/node": "^20.1.0",
+    "jest": "^29.5.0",
+    "ts-jest": "^29.1.0",
     "ts-node": "^10.9.1",
     "typescript": "^5.0.4"
   },

ws.test.ts

@@ -0,0 +1,47 @@
+import { Connection, Keypair, sendAndConfirmTransaction, Transaction, PublicKey, TransactionInstruction, BlockheightBasedTransactionConfirmationStrategy } from "@solana/web3.js";
+import * as fs from "fs";
+import * as os from "os";
+import * as crypto from "crypto";
+
+jest.setTimeout(60000);
+
+const MEMO_PROGRAM_ID = new PublicKey("MemoSq4gqABAXKb96qnH8TysNcWxMyWCqXgDLGmfcHr");
+const connection = new Connection('http://0.0.0.0:8899', 'confirmed');
+const keypair_file = fs.readFileSync(`${os.homedir}/.config/solana/id.json`, 'utf-8');
+const payer = Keypair.fromSecretKey(Uint8Array.from(JSON.parse(keypair_file)));
+
+function createTransaction(): Transaction {
+    const transaction = new Transaction();
+
+    transaction.add(
+        new TransactionInstruction({
+            programId: MEMO_PROGRAM_ID,
+            keys: [],
+            data: Buffer.from(crypto.randomBytes(20).toString('hex'))
+        })
+    );
+
+    return transaction;
+}
+
+test('send and confirm transaction BlockheightBasedTransactionConfirmationStrategy', async () => {
+    const tx = createTransaction();
+    const { blockhash, lastValidBlockHeight } = await connection.getLatestBlockhash();
+
+    const signature = await connection.sendTransaction(tx, [payer]);
+    await connection.confirmTransaction({
+        blockhash,
+        lastValidBlockHeight,
+        signature,
+        abortSignal: undefined
+    });
+
+    console.log(`https://explorer.solana.com/tx/${signature}`)
+});
+
+test('send and confirm transaction', async () => {
+    const tx = createTransaction();
+
+    await sendAndConfirmTransaction(connection, tx, [payer]);
+});
+