1 files changed, 20 insertions, 2 deletions
diff --git a/tests/unit_node/perf_hooks_test.ts b/tests/unit_node/perf_hooks_test.ts
index d5b900041..83d006222 100644
--- a/tests/unit_node/perf_hooks_test.ts
+++ b/tests/unit_node/perf_hooks_test.ts
@@ -1,7 +1,11 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 import * as perfHooks from "node:perf_hooks";
-import { performance, PerformanceObserver } from "node:perf_hooks";
-import { assertEquals, assertThrows } from "@std/assert";
+import {
+  monitorEventLoopDelay,
+  performance,
+  PerformanceObserver,
+} from "node:perf_hooks";
+import { assert, assertEquals, assertThrows } from "@std/assert";
 
 Deno.test({
   name: "[perf_hooks] performance",
@@ -68,3 +72,17 @@ Deno.test("[perf_hooks]: eventLoopUtilization", () => {
   assertEquals(typeof obj.active, "number");
   assertEquals(typeof obj.utilization, "number");
 });
+
+Deno.test("[perf_hooks]: monitorEventLoopDelay", async () => {
+  const e = monitorEventLoopDelay();
+  assertEquals(e.count, 0);
+  e.enable();
+
+  await new Promise((resolve) => setTimeout(resolve, 100));
+
+  assert(e.min > 0);
+  assert(e.minBigInt > 0n);
+  assert(e.count > 0);
+
+  e.disable();
+});