refactor(benchmark): Expand js code node benchmark (#11052)

packages/@n8n/benchmark/scenarios/js-code-node/js-code-node.script.js

@@ -0,0 +1,22 @@
+import http from 'k6/http';
+import { check } from 'k6';
+
+const apiBaseUrl = __ENV.API_BASE_URL;
+
+export default function () {
+	const res = http.post(`${apiBaseUrl}/webhook/code-node-benchmark`, {});
+	check(res, {
+		'is status 200': (r) => r.status === 200,
+		'has items in response': (r) => {
+			if (r.status !== 200) return false;
+
+			try {
+				const body = JSON.parse(r.body);
+				return Array.isArray(body) ? body.length === 100 : false;
+			} catch (error) {
+				console.error('Error parsing response body: ', error);
+				return false;
+			}
+		},
+	});
+}