add test

Signed-off-by: Jeffrey Tang <[email protected]>

examples/create-topic.js

@@ -0,0 +1,65 @@
+import {
+    Wallet,
+    LocalProvider,
+    TopicCreateTransaction,
+    TopicMessageSubmitTransaction,
+} from "@hashgraph/sdk";
+
+import dotenv from "dotenv";
+
+dotenv.config();
+
+async function main() {
+    if (
+        process.env.OPERATOR_ID == null ||
+        process.env.OPERATOR_KEY == null ||
+        process.env.HEDERA_NETWORK == null
+    ) {
+        throw new Error(
+            "Environment variables OPERATOR_ID, HEDERA_NETWORK, and OPERATOR_KEY are required.",
+        );
+    }
+
+    const provider = new LocalProvider();
+
+    const wallet = new Wallet(
+        process.env.OPERATOR_ID,
+        process.env.OPERATOR_KEY,
+        provider,
+    );
+
+    try {
+        // create topic
+        let transaction = await new TopicCreateTransaction().freezeWithSigner(
+            wallet,
+        );
+        transaction = await transaction.signWithSigner(wallet);
+        const createResponse = await transaction.executeWithSigner(wallet);
+        const createReceipt = await createResponse.getReceiptWithSigner(wallet);
+
+        console.log(`topic id = ${createReceipt.topicId.toString()}`);
+
+        // send one message
+        let topicMessageSubmitTransaction =
+            await new TopicMessageSubmitTransaction({
+                topicId: createReceipt.topicId,
+                message: "Hello World",
+            }).freezeWithSigner(wallet);
+        topicMessageSubmitTransaction =
+            await topicMessageSubmitTransaction.signWithSigner(wallet);
+        const sendResponse =
+            await topicMessageSubmitTransaction.executeWithSigner(wallet);
+
+        const sendReceipt = await sendResponse.getReceiptWithSigner(wallet);
+
+        console.log(
+            `topic sequence number = ${sendReceipt.topicSequenceNumber.toString()}`,
+        );
+    } catch (error) {
+        console.error(error);
+    }
+
+    provider.close();
+}
+
+void main();