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146 lines
3.3 KiB
146 lines
3.3 KiB
var common = require('../common');
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var assert = require('assert');
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var dns = require('dns');
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var existing = dns.getServers();
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assert(existing.length);
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function noop() {}
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var goog = [
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'8.8.8.8',
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'8.8.4.4',
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];
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assert.doesNotThrow(function () { dns.setServers(goog) });
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assert.deepEqual(dns.getServers(), goog);
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assert.throws(function () { dns.setServers(['foobar']) });
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assert.deepEqual(dns.getServers(), goog);
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var goog6 = [
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'2001:4860:4860::8888',
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'2001:4860:4860::8844',
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];
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assert.doesNotThrow(function () { dns.setServers(goog6) });
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assert.deepEqual(dns.getServers(), goog6);
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goog6.push('4.4.4.4');
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dns.setServers(goog6);
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assert.deepEqual(dns.getServers(), goog6);
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var ports = [
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'4.4.4.4:53',
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'[2001:4860:4860::8888]:53',
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];
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var portsExpected = [
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'4.4.4.4',
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'2001:4860:4860::8888',
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];
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dns.setServers(ports);
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assert.deepEqual(dns.getServers(), portsExpected);
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assert.doesNotThrow(function () { dns.setServers([]); });
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assert.deepEqual(dns.getServers(), []);
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assert.throws(function() {
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dns.resolve('test.com', [], noop);
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}, function(err) {
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return !(err instanceof TypeError);
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}, 'Unexpected error');
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// dns.lookup should accept falsey and string values
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assert.throws(function() {
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dns.lookup({}, noop);
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}, 'invalid arguments: hostname must be a string or falsey');
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assert.throws(function() {
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dns.lookup([], noop);
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}, 'invalid arguments: hostname must be a string or falsey');
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assert.throws(function() {
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dns.lookup(true, noop);
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}, 'invalid arguments: hostname must be a string or falsey');
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assert.throws(function() {
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dns.lookup(1, noop);
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}, 'invalid arguments: hostname must be a string or falsey');
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assert.throws(function() {
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dns.lookup(noop, noop);
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}, 'invalid arguments: hostname must be a string or falsey');
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assert.doesNotThrow(function() {
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dns.lookup('', noop);
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});
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assert.doesNotThrow(function() {
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dns.lookup(null, noop);
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});
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assert.doesNotThrow(function() {
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dns.lookup(undefined, noop);
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});
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assert.doesNotThrow(function() {
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dns.lookup(0, noop);
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});
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assert.doesNotThrow(function() {
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dns.lookup(NaN, noop);
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});
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/*
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* Make sure that dns.lookup throws if hints does not represent a valid flag.
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* (dns.V4MAPPED | dns.ADDRCONFIG) + 1 is invalid because:
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* - it's different from dns.V4MAPPED and dns.ADDRCONFIG.
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* - it's different from them bitwise ored.
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* - it's different from 0.
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* - it's an odd number different than 1, and thus is invalid, because
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* flags are either === 1 or even.
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*/
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assert.throws(function() {
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dns.lookup('www.google.com', { hints: (dns.V4MAPPED | dns.ADDRCONFIG) + 1 },
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noop);
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});
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assert.throws(function() {
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dns.lookup('www.google.com');
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}, 'invalid arguments: callback must be passed');
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assert.throws(function() {
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dns.lookup('www.google.com', 4);
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}, 'invalid arguments: callback must be passed');
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assert.doesNotThrow(function() {
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dns.lookup('www.google.com', 6, noop);
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});
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assert.doesNotThrow(function() {
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dns.lookup('www.google.com', {}, noop);
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});
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assert.doesNotThrow(function() {
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dns.lookup('www.google.com', {
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family: 4,
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hints: 0
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}, noop);
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});
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assert.doesNotThrow(function() {
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dns.lookup('www.google.com', {
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family: 6,
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hints: dns.ADDRCONFIG
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}, noop);
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});
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assert.doesNotThrow(function() {
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dns.lookup('www.google.com', {
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hints: dns.V4MAPPED
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}, noop);
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});
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assert.doesNotThrow(function() {
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dns.lookup('www.google.com', {
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hints: dns.ADDRCONFIG | dns.V4MAPPED
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}, noop);
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});
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