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| 1 | +'use strict'; |
| 2 | +const common = require('../common'); |
| 3 | +const assert = require('assert'); |
| 4 | +const cares = process.binding('cares_wrap'); |
| 5 | +const dns = require('dns'); |
| 6 | + |
| 7 | +// Stub `getaddrinfo` to *always* error. |
| 8 | +cares.getaddrinfo = () => process.binding('uv').UV_ENOENT; |
| 9 | + |
| 10 | +assert.throws(() => { |
| 11 | + dns.lookup(1, {}); |
| 12 | +}, /^TypeError: Invalid arguments: hostname must be a string or falsey$/); |
| 13 | + |
| 14 | +assert.throws(() => { |
| 15 | + dns.lookup(false, 'cb'); |
| 16 | +}, /^TypeError: Invalid arguments: callback must be passed$/); |
| 17 | + |
| 18 | +assert.throws(() => { |
| 19 | + dns.lookup(false, 'options', 'cb'); |
| 20 | +}, /^TypeError: Invalid arguments: callback must be passed$/); |
| 21 | + |
| 22 | +assert.throws(() => { |
| 23 | + dns.lookup(false, { |
| 24 | + hints: 100, |
| 25 | + family: 0, |
| 26 | + all: false |
| 27 | + }, () => {}); |
| 28 | +}, /^TypeError: Invalid argument: hints must use valid flags$/); |
| 29 | + |
| 30 | +assert.throws(() => { |
| 31 | + dns.lookup(false, { |
| 32 | + hints: 0, |
| 33 | + family: 20, |
| 34 | + all: false |
| 35 | + }, () => {}); |
| 36 | +}, /^TypeError: Invalid argument: family must be 4 or 6$/); |
| 37 | + |
| 38 | +assert.doesNotThrow(() => { |
| 39 | + dns.lookup(false, { |
| 40 | + hints: 0, |
| 41 | + family: 0, |
| 42 | + all: true |
| 43 | + }, common.mustCall((error, result, addressType) => { |
| 44 | + assert.ifError(error); |
| 45 | + assert.deepStrictEqual(result, []); |
| 46 | + assert.strictEqual(addressType, undefined); |
| 47 | + })); |
| 48 | +}); |
| 49 | + |
| 50 | +assert.doesNotThrow(() => { |
| 51 | + dns.lookup('127.0.0.1', { |
| 52 | + hints: 0, |
| 53 | + family: 4, |
| 54 | + all: true |
| 55 | + }, common.mustCall((error, result, addressType) => { |
| 56 | + assert.ifError(error); |
| 57 | + assert.deepStrictEqual(result, [{ |
| 58 | + address: '127.0.0.1', |
| 59 | + family: 4 |
| 60 | + }]); |
| 61 | + assert.strictEqual(addressType, undefined); |
| 62 | + })); |
| 63 | +}); |
| 64 | + |
| 65 | +assert.doesNotThrow(() => { |
| 66 | + dns.lookup('127.0.0.1', { |
| 67 | + hints: 0, |
| 68 | + family: 4, |
| 69 | + all: false |
| 70 | + }, common.mustCall((error, result, addressType) => { |
| 71 | + assert.ifError(error); |
| 72 | + assert.deepStrictEqual(result, '127.0.0.1'); |
| 73 | + assert.strictEqual(addressType, 4); |
| 74 | + })); |
| 75 | +}); |
| 76 | + |
| 77 | +assert.doesNotThrow(() => { |
| 78 | + let tickValue = 0; |
| 79 | + |
| 80 | + dns.lookup('example.com', common.mustCall((error, result, addressType) => { |
| 81 | + assert(error); |
| 82 | + assert.strictEqual(tickValue, 1); |
| 83 | + assert.strictEqual(error.code, 'ENOENT'); |
| 84 | + })); |
| 85 | + |
| 86 | + // Make sure that the error callback is called |
| 87 | + // on next tick. |
| 88 | + tickValue = 1; |
| 89 | +}); |
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