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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';
23const common = require('../common');
24const assert = require('assert');
25
26const dns = require('dns');
27const dnsPromises = dns.promises;
28
29(async function() {
30  let res;
31
32  res = await dnsPromises.lookup(null);
33  assert.strictEqual(res.address, null);
34  assert.strictEqual(res.family, 4);
35
36  res = await dnsPromises.lookup('127.0.0.1');
37  assert.strictEqual(res.address, '127.0.0.1');
38  assert.strictEqual(res.family, 4);
39
40  res = await dnsPromises.lookup('::1');
41  assert.strictEqual(res.address, '::1');
42  assert.strictEqual(res.family, 6);
43})().then(common.mustCall());
44
45// Try resolution without hostname.
46dns.lookup(null, common.mustSucceed((result, addressType) => {
47  assert.strictEqual(result, null);
48  assert.strictEqual(addressType, 4);
49}));
50
51dns.lookup('127.0.0.1', common.mustSucceed((result, addressType) => {
52  assert.strictEqual(result, '127.0.0.1');
53  assert.strictEqual(addressType, 4);
54}));
55
56dns.lookup('::1', common.mustSucceed((result, addressType) => {
57  assert.strictEqual(result, '::1');
58  assert.strictEqual(addressType, 6);
59}));
60
61[
62  // Try calling resolve with an unsupported type.
63  'HI',
64  // Try calling resolve with an unsupported type that's an object key
65  'toString',
66].forEach((val) => {
67  const err = {
68    code: 'ERR_INVALID_ARG_VALUE',
69    name: 'TypeError',
70    message: `The argument 'rrtype' is invalid. Received '${val}'`,
71  };
72
73  assert.throws(
74    () => dns.resolve('www.google.com', val),
75    err
76  );
77
78  assert.throws(() => dnsPromises.resolve('www.google.com', val), err);
79});
80
81// Windows doesn't usually have an entry for localhost 127.0.0.1 in
82// C:\Windows\System32\drivers\etc\hosts
83// so we disable this test on Windows.
84// IBMi reports `ENOTFOUND` when get hostname by address 127.0.0.1
85if (!common.isWindows && !common.isIBMi) {
86  dns.reverse('127.0.0.1', common.mustSucceed((domains) => {
87    assert.ok(Array.isArray(domains));
88  }));
89
90  (async function() {
91    assert.ok(Array.isArray(await dnsPromises.reverse('127.0.0.1')));
92  })().then(common.mustCall());
93}
94