mirror of https://github.com/nodejs/node.git
26 lines
706 B
JavaScript
26 lines
706 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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items.getEntries().forEach(({ name, duration }) => {
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assert.ok(duration > DELAY);
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assert.strictEqual(expected.shift(), name);
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});
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}));
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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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