node/test/parallel/test-dns-lookup-cb-error.js
James M Snell 07b54ec4ca test: various test improvements
* Favor strictEqual
* Use const where appropriate
* Modernize where possible

PR-URL: https://github.com/nodejs/node/pull/8468
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
2016-10-10 08:52:03 -07:00

26 lines
608 B
JavaScript

'use strict';
const common = require('../common');
const assert = require('assert');
const cares = process.binding('cares_wrap');
const dns = require('dns');
// Stub `getaddrinfo` to *always* error.
cares.getaddrinfo = function() {
return process.binding('uv').UV_ENOENT;
};
assert.doesNotThrow(() => {
var tickValue = 0;
dns.lookup('example.com', common.mustCall((error, result, addressType) => {
assert(error);
assert.strictEqual(tickValue, 1);
assert.strictEqual(error.code, 'ENOENT');
}));
// Make sure that the error callback is called
// on next tick.
tickValue = 1;
});