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'use strict';
require('../common');
const assert = require('assert');
// the default behavior, return an Array "tuple" of numbers
const tuple = process.hrtime();
// validate the default behavior
validateTuple(tuple);
// validate that passing an existing tuple returns another valid tuple
validateTuple(process.hrtime(tuple));
// test that only an Array may be passed to process.hrtime()
assert.throws(() => {
process.hrtime(1);
}, /^TypeError: process.hrtime\(\) only accepts an Array tuple$/);
assert.throws(() => {
process.hrtime([]);
}, /^TypeError: process.hrtime\(\) only accepts an Array tuple$/);
assert.throws(() => {
process.hrtime([1]);
}, /^TypeError: process.hrtime\(\) only accepts an Array tuple$/);
assert.throws(() => {
process.hrtime([1, 2, 3]);
}, /^TypeError: process.hrtime\(\) only accepts an Array tuple$/);
function validateTuple(tuple) {
assert(Array.isArray(tuple));
assert.strictEqual(tuple.length, 2);
assert(Number.isInteger(tuple[0]));
assert(Number.isInteger(tuple[1]));
}
const diff = process.hrtime([0, 1e9 - 1]);
assert(diff[1] >= 0); // https://github.com/nodejs/node/issues/4751
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