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