|
| 1 | +// Flags: --expose-internals |
| 2 | +'use strict'; |
| 3 | +const common = require('../common'); |
| 4 | +const assert = require('assert'); |
| 5 | +const { internalBinding } = require('internal/test/binding'); |
| 6 | +const cares = internalBinding('cares_wrap'); |
| 7 | + |
| 8 | +// Stub `getaddrinfo` to proxy its call dynamic stub. This has to be done before |
| 9 | +// we load the `dns` module to guarantee that the `dns` module uses the stub. |
| 10 | +let getaddrinfoStub = null; |
| 11 | +cares.getaddrinfo = (req) => getaddrinfoStub(req); |
| 12 | + |
| 13 | +const dnsPromises = require('dns').promises; |
| 14 | + |
| 15 | +function getaddrinfoNegative() { |
| 16 | + return function getaddrinfoNegativeHandler(req) { |
| 17 | + const originalReject = req.reject; |
| 18 | + req.resolve = common.mustNotCall(); |
| 19 | + req.reject = common.mustCall(originalReject); |
| 20 | + req.oncomplete(internalBinding('uv').UV_ENOMEM); |
| 21 | + }; |
| 22 | +} |
| 23 | + |
| 24 | +function getaddrinfoPositive(addresses) { |
| 25 | + return function getaddrinfo_positive(req) { |
| 26 | + const originalResolve = req.resolve; |
| 27 | + req.reject = common.mustNotCall(); |
| 28 | + req.resolve = common.mustCall(originalResolve); |
| 29 | + req.oncomplete(null, addresses); |
| 30 | + }; |
| 31 | +} |
| 32 | + |
| 33 | +async function lookupPositive() { |
| 34 | + [ |
| 35 | + { |
| 36 | + stub: getaddrinfoPositive(['::1']), |
| 37 | + factory: () => dnsPromises.lookup('example.com'), |
| 38 | + expectation: { address: '::1', family: 6 } |
| 39 | + }, |
| 40 | + { |
| 41 | + stub: getaddrinfoPositive(['127.0.0.1']), |
| 42 | + factory: () => dnsPromises.lookup('example.com'), |
| 43 | + expectation: { address: '127.0.0.1', family: 4 } |
| 44 | + }, |
| 45 | + { |
| 46 | + stub: getaddrinfoPositive(['127.0.0.1'], { family: 4 }), |
| 47 | + factory: () => dnsPromises.lookup('example.com'), |
| 48 | + expectation: { address: '127.0.0.1', family: 4 } |
| 49 | + }, |
| 50 | + { |
| 51 | + stub: getaddrinfoPositive(['some-address']), |
| 52 | + factory: () => dnsPromises.lookup('example.com'), |
| 53 | + expectation: { address: 'some-address', family: 0 } |
| 54 | + }, |
| 55 | + { |
| 56 | + stub: getaddrinfoPositive(['some-address2']), |
| 57 | + factory: () => dnsPromises.lookup('example.com', { family: 6 }), |
| 58 | + expectation: { address: 'some-address2', family: 6 } |
| 59 | + } |
| 60 | + ].forEach(async ({ stub, factory, expectation }) => { |
| 61 | + getaddrinfoStub = stub; |
| 62 | + assert.deepStrictEqual(await factory(), expectation); |
| 63 | + }); |
| 64 | +} |
| 65 | + |
| 66 | +async function lookupNegative() { |
| 67 | + getaddrinfoStub = getaddrinfoNegative(); |
| 68 | + const expected = { |
| 69 | + code: 'ENOMEM', |
| 70 | + hostname: 'example.com', |
| 71 | + syscall: 'getaddrinfo' |
| 72 | + }; |
| 73 | + return assert.rejects(dnsPromises.lookup('example.com'), expected); |
| 74 | +} |
| 75 | + |
| 76 | +async function lookupallPositive() { |
| 77 | + [ |
| 78 | + { |
| 79 | + stub: getaddrinfoPositive(['::1', '::2']), |
| 80 | + factory: () => dnsPromises.lookup('example', { all: true }), |
| 81 | + expectation: [ |
| 82 | + { address: '::1', family: 6 }, |
| 83 | + { address: '::2', family: 6 } |
| 84 | + ] |
| 85 | + }, |
| 86 | + { |
| 87 | + stub: getaddrinfoPositive(['::1', '::2']), |
| 88 | + factory: () => dnsPromises.lookup('example', { all: true, family: 4 }), |
| 89 | + expectation: [ |
| 90 | + { address: '::1', family: 4 }, |
| 91 | + { address: '::2', family: 4 } |
| 92 | + ] |
| 93 | + }, |
| 94 | + { |
| 95 | + stub: getaddrinfoPositive(['127.0.0.1', 'some-address']), |
| 96 | + factory: () => dnsPromises.lookup('example', { all: true }), |
| 97 | + expectation: [ |
| 98 | + { address: '127.0.0.1', family: 4 }, |
| 99 | + { address: 'some-address', family: 0 } |
| 100 | + ] |
| 101 | + }, |
| 102 | + { |
| 103 | + stub: getaddrinfoPositive(['127.0.0.1', 'some-address']), |
| 104 | + factory: () => dnsPromises.lookup('example', { all: true, family: 6 }), |
| 105 | + expectation: [ |
| 106 | + { address: '127.0.0.1', family: 6 }, |
| 107 | + { address: 'some-address', family: 6 } |
| 108 | + ] |
| 109 | + }, |
| 110 | + { |
| 111 | + stub: getaddrinfoPositive([]), |
| 112 | + factory: () => dnsPromises.lookup('example', { all: true }), |
| 113 | + expectation: [] |
| 114 | + } |
| 115 | + ].forEach(async ({ stub, factory, expectation }) => { |
| 116 | + getaddrinfoStub = stub; |
| 117 | + assert.deepStrictEqual(await factory(), expectation); |
| 118 | + }); |
| 119 | +} |
| 120 | + |
| 121 | +async function lookupallNegative() { |
| 122 | + getaddrinfoStub = getaddrinfoNegative(); |
| 123 | + const expected = { |
| 124 | + code: 'ENOMEM', |
| 125 | + hostname: 'example.com', |
| 126 | + syscall: 'getaddrinfo' |
| 127 | + }; |
| 128 | + return assert.rejects(dnsPromises.lookup('example.com', { all: true }), |
| 129 | + expected); |
| 130 | +} |
| 131 | + |
| 132 | +(async () => { |
| 133 | + await Promise.all([ |
| 134 | + lookupPositive(), |
| 135 | + lookupNegative(), |
| 136 | + lookupallPositive(), |
| 137 | + lookupallNegative() |
| 138 | + ]).then(common.mustCall()); |
| 139 | +})(); |
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