test: add test for async contexts in PerformanceObserver

This test proves that the PerformanceObserver callback gets called with
the async context of the callsite of performance.mark()/measure() and
therefore AsyncLocalStorage can be used inside a PerformanceObserver.

PR: #36343

PR-URL: #36343
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Rich Trott <rtrott@gmail.com>

test/parallel/test-performanceobserver-asynccontext.js

@@ -0,0 +1,37 @@
+'use strict';
+
+const common = require('../common');
+const assert = require('assert');
+const {
+ performance,
+ PerformanceObserver,
+} = require('perf_hooks');
+const {
+ executionAsyncId,
+ triggerAsyncId,
+ executionAsyncResource,
+} = require('async_hooks');
+
+// Test Non-Buffered PerformanceObserver retains async context
+{
+ const observer =
+ new PerformanceObserver(common.mustCall(callback));
+
+ const initialAsyncId = executionAsyncId();
+ let asyncIdInTimeout;
+ let asyncResourceInTimeout;
+
+ function callback(list) {
+ assert.strictEqual(triggerAsyncId(), initialAsyncId);
+ assert.strictEqual(executionAsyncId(), asyncIdInTimeout);
+ assert.strictEqual(executionAsyncResource(), asyncResourceInTimeout);
+ observer.disconnect();
+ }
+ observer.observe({ entryTypes: ['mark'] });
+
+ setTimeout(() => {
+ asyncIdInTimeout = executionAsyncId();
+ asyncResourceInTimeout = executionAsyncResource();
+ performance.mark('test1');
+ }, 0);
+}