d0a3bf1f11
Make `startMark` and `endMark` parameters optional. PR-URL: https://github.com/nodejs/node/pull/32651 Fixes: https://github.com/nodejs/node/issues/32647 Refs: https://www.w3.org/TR/user-timing-2/#measure-method Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Chengzhong Wu <legendecas@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
26 lines
723 B
JavaScript
26 lines
723 B
JavaScript
'use strict';
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const common = require('../common');
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const assert = require('assert');
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const { PerformanceObserver, performance } = require('perf_hooks');
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const DELAY = 1000;
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const expected = ['Start to Now', 'A to Now', 'A to B'];
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const obs = new PerformanceObserver(common.mustCall((items) => {
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const entries = items.getEntries();
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const { name, duration } = entries[0];
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assert.ok(duration > DELAY);
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assert.strictEqual(expected.shift(), name);
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}, 3));
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obs.observe({ entryTypes: ['measure'] });
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performance.mark('A');
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setTimeout(common.mustCall(() => {
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performance.measure('Start to Now');
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performance.measure('A to Now', 'A');
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performance.mark('B');
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performance.measure('A to B', 'A', 'B');
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}), DELAY);
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