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nodejs/test/parallel/test-dns.js
isaacs 3e1b1dd4a9 Remove excessive copyright/license boilerplate
The copyright and license notice is already in the LICENSE file.  There
is no justifiable reason to also require that it be included in every
file, since the individual files are not individually distributed except
as part of the entire package.
2015-01-12 15:30:28 -08:00

147 lines
3.3 KiB
JavaScript

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