add initial testing

agent/run.ts

@@ -0,0 +1,22 @@
+import { Client } from "@langchain/langgraph-sdk";
+
+// only set the apiUrl if you changed the default port when calling langgraph dev
+const client = new Client({ apiUrl: "http://localhost:2024"});
+const thread = await client.threads.create();
+
+const streamResponse = client.runs.stream(
+  thread["thread_id"],
+  "agent", 
+  {
+    input: [
+      { role: "user", content: "3+5" }
+    ],
+    streamMode: "messages-tuple",
+  }
+);
+
+for await (const chunk of streamResponse) {
+  console.log(`Receiving new event of type: ${chunk.event}...`);
+  console.log(JSON.stringify(chunk.data));
+  console.log("\n\n");
+}