mirror of https://github.com/nodejs/node.git
27 lines
752 B
JavaScript
27 lines
752 B
JavaScript
'use strict';
|
|
|
|
const common = require('../common');
|
|
const assert = require('assert');
|
|
|
|
const { PerformanceObserver, performance } = require('perf_hooks');
|
|
const DELAY = 1000;
|
|
const ALLOWED_MARGIN = 10;
|
|
|
|
const expected = ['Start to Now', 'A to Now', 'A to B'];
|
|
const obs = new PerformanceObserver(common.mustCall((items) => {
|
|
items.getEntries().forEach(({ name, duration }) => {
|
|
assert.ok(duration > (DELAY - ALLOWED_MARGIN));
|
|
assert.strictEqual(expected.shift(), name);
|
|
});
|
|
}));
|
|
obs.observe({ entryTypes: ['measure'] });
|
|
|
|
performance.mark('A');
|
|
setTimeout(common.mustCall(() => {
|
|
performance.measure('Start to Now');
|
|
performance.measure('A to Now', 'A');
|
|
|
|
performance.mark('B');
|
|
performance.measure('A to B', 'A', 'B');
|
|
}), DELAY);
|