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1// Copyright Joyent, Inc. and other Node contributors.
2//
3// Permission is hereby granted, free of charge, to any person obtaining a
4// copy of this software and associated documentation files (the
5// "Software"), to deal in the Software without restriction, including
6// without limitation the rights to use, copy, modify, merge, publish,
7// distribute, sublicense, and/or sell copies of the Software, and to permit
8// persons to whom the Software is furnished to do so, subject to the
9// following conditions:
10//
11// The above copyright notice and this permission notice shall be included
12// in all copies or substantial portions of the Software.
13//
14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
17// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
18// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20// USE OR OTHER DEALINGS IN THE SOFTWARE.
21
22'use strict';
23require('../common');
24const assert = require('assert');
25
26// The default behavior, return an Array "tuple" of numbers
27const tuple = process.hrtime();
28
29// Validate the default behavior
30validateTuple(tuple);
31
32// Validate that passing an existing tuple returns another valid tuple
33validateTuple(process.hrtime(tuple));
34
35// Test that only an Array may be passed to process.hrtime()
36assert.throws(() => {
37  process.hrtime(1);
38}, {
39  code: 'ERR_INVALID_ARG_TYPE',
40  name: 'TypeError',
41  message: 'The "time" argument must be an instance of Array. Received type ' +
42           'number (1)'
43});
44assert.throws(() => {
45  process.hrtime([]);
46}, {
47  code: 'ERR_OUT_OF_RANGE',
48  name: 'RangeError',
49  message: 'The value of "time" is out of range. It must be 2. Received 0'
50});
51assert.throws(() => {
52  process.hrtime([1]);
53}, {
54  code: 'ERR_OUT_OF_RANGE',
55  name: 'RangeError',
56  message: 'The value of "time" is out of range. It must be 2. Received 1'
57});
58assert.throws(() => {
59  process.hrtime([1, 2, 3]);
60}, {
61  code: 'ERR_OUT_OF_RANGE',
62  name: 'RangeError',
63  message: 'The value of "time" is out of range. It must be 2. Received 3'
64});
65
66function validateTuple(tuple) {
67  assert(Array.isArray(tuple));
68  assert.strictEqual(tuple.length, 2);
69  assert(Number.isInteger(tuple[0]));
70  assert(Number.isInteger(tuple[1]));
71}
72
73const diff = process.hrtime([0, 1e9 - 1]);
74assert(diff[1] >= 0); // https://github.com/nodejs/node/issues/4751
75