dns: add promisified dns module

PR-URL: https://github.com/nodejs/node/pull/21264
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

1 files changed, 13 insertions, 2 deletions

diff --git a/test/parallel/test-dns-resolveany-bad-ancount.js b/test/parallel/test-dns-resolveany-bad-ancount.js
index 63ed1774b1..d48d9385b8 100644
--- a/test/parallel/test-dns-resolveany-bad-ancount.js
+++ b/test/parallel/test-dns-resolveany-bad-ancount.js
@@ -4,6 +4,9 @@ const dnstools = require('../common/dns');
 const dns = require('dns');
 const assert = require('assert');
 const dgram = require('dgram');
+const dnsPromises = dns.promises;
+
+common.crashOnUnhandledRejection();
 
 const server = dgram.createSocket('udp4');
 
@@ -20,12 +23,20 @@ server.on('message', common.mustCall((msg, { address, port }) => {
   // Overwrite the # of answers with 2, which is incorrect.
   buf.writeUInt16LE(2, 6);
   server.send(buf, port, address);
-}));
+}, 2));
 
-server.bind(0, common.mustCall(() => {
+server.bind(0, common.mustCall(async () => {
   const address = server.address();
   dns.setServers([`127.0.0.1:${address.port}`]);
 
+  dnsPromises.resolveAny('example.org')
+    .then(common.mustNotCall())
+    .catch(common.expectsError({
+      code: 'EBADRESP',
+      syscall: 'queryAny',
+      hostname: 'example.org'
+    }));
+
   dns.resolveAny('example.org', common.mustCall((err) => {
     assert.strictEqual(err.code, 'EBADRESP');
     assert.strictEqual(err.syscall, 'queryAny');