Commit 0f749a3
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>1 parent f368d69 commit 0f749a3
1 file changed
Lines changed: 37 additions & 0 deletions
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|---|---|---|---|
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| 1 | + 'use strict'; | ||
| 2 | + | ||
| 3 | + const common = require('../common'); | ||
| 4 | + const assert = require('assert'); | ||
| 5 | + const { | ||
| 6 | + performance, | ||
| 7 | + PerformanceObserver, | ||
| 8 | + } = require('perf_hooks'); | ||
| 9 | + const { | ||
| 10 | + executionAsyncId, | ||
| 11 | + triggerAsyncId, | ||
| 12 | + executionAsyncResource, | ||
| 13 | + } = require('async_hooks'); | ||
| 14 | + | ||
| 15 | + // Test Non-Buffered PerformanceObserver retains async context | ||
| 16 | + { | ||
| 17 | + const observer = | ||
| 18 | + new PerformanceObserver(common.mustCall(callback)); | ||
| 19 | + | ||
| 20 | + const initialAsyncId = executionAsyncId(); | ||
| 21 | + let asyncIdInTimeout; | ||
| 22 | + let asyncResourceInTimeout; | ||
| 23 | + | ||
| 24 | + function callback(list) { | ||
| 25 | + assert.strictEqual(triggerAsyncId(), initialAsyncId); | ||
| 26 | + assert.strictEqual(executionAsyncId(), asyncIdInTimeout); | ||
| 27 | + assert.strictEqual(executionAsyncResource(), asyncResourceInTimeout); | ||
| 28 | + observer.disconnect(); | ||
| 29 | + } | ||
| 30 | + observer.observe({ entryTypes: ['mark'] }); | ||
| 31 | + | ||
| 32 | + setTimeout(() => { | ||
| 33 | + asyncIdInTimeout = executionAsyncId(); | ||
| 34 | + asyncResourceInTimeout = executionAsyncResource(); | ||
| 35 | + performance.mark('test1'); | ||
| 36 | + }, 0); | ||
| 37 | + } | ||
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