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'use strict';
const common = require('../common');
const assert = require('assert');
const { performance } = require('perf_hooks');
if (!common.isMainThread)
common.skip('bootstrapping workers works differently');
assert(performance);
assert(performance.nodeTiming);
assert.strictEqual(typeof performance.timeOrigin, 'number');
// Use a fairly large epsilon value, since we can only guarantee that the node
// process started up in 15 seconds.
assert(Math.abs(performance.timeOrigin - Date.now()) < 15000);
const inited = performance.now();
assert(inited < 15000);
assert.strictEqual(performance.nodeTiming.name, 'node');
assert.strictEqual(performance.nodeTiming.entryType, 'node');
const delay = 250;
function checkNodeTiming(props) {
console.log(props);
for (const prop of Object.keys(props)) {
if (props[prop].around !== undefined) {
assert.strictEqual(typeof performance.nodeTiming[prop], 'number');
const delta = performance.nodeTiming[prop] - props[prop].around;
assert(
Math.abs(delta) < (props[prop].delay || delay),
`${prop}: ${Math.abs(delta)} >= ${props[prop].delay || delay}`
);
} else {
assert.strictEqual(performance.nodeTiming[prop], props[prop],
`mismatch for performance property ${prop}: ` +
`${performance.nodeTiming[prop]} vs ${props[prop]}`);
}
}
}
checkNodeTiming({
name: 'node',
entryType: 'node',
startTime: 0,
duration: { around: performance.now() },
nodeStart: { around: 0 },
v8Start: { around: 0 },
bootstrapComplete: { around: inited, delay: 2500 },
environment: { around: 0 },
loopStart: -1,
loopExit: -1
});
setTimeout(() => {
checkNodeTiming({
name: 'node',
entryType: 'node',
startTime: 0,
duration: { around: performance.now() },
nodeStart: { around: 0 },
v8Start: { around: 0 },
bootstrapComplete: { around: inited, delay: 2500 },
environment: { around: 0 },
loopStart: { around: inited, delay: 2500 },
loopExit: -1
});
}, 1000);
process.on('exit', () => {
checkNodeTiming({
name: 'node',
entryType: 'node',
startTime: 0,
duration: { around: performance.now() },
nodeStart: { around: 0 },
v8Start: { around: 0 },
bootstrapComplete: { around: inited, delay: 2500 },
environment: { around: 0 },
loopStart: { around: inited, delay: 2500 },
loopExit: { around: performance.now() }
});
});
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