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, 15 insertions, 6 deletions

diff --git a/test/parallel/test-dns-resolveany.js b/test/parallel/test-dns-resolveany.js
index 82f589147f..f9a6399cef 100644
--- a/test/parallel/test-dns-resolveany.js
+++ b/test/parallel/test-dns-resolveany.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 answers = [
   { type: 'A', address: '1.2.3.4', ttl: 123 },
@@ -36,18 +39,24 @@ server.on('message', common.mustCall((msg, { address, port }) => {
     questions: parsed.questions,
     answers: answers.map((answer) => Object.assign({ domain }, answer)),
   }), 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}`]);
 
+  validateResults(await dnsPromises.resolveAny('example.org'));
+
   dns.resolveAny('example.org', common.mustCall((err, res) => {
     assert.ifError(err);
-    // Compare copies with ttl removed, c-ares fiddles with that value.
-    assert.deepStrictEqual(
-      res.map((r) => Object.assign({}, r, { ttl: null })),
-      answers.map((r) => Object.assign({}, r, { ttl: null })));
+    validateResults(res);
     server.close();
   }));
 }));
+
+function validateResults(res) {
+  // Compare copies with ttl removed, c-ares fiddles with that value.
+  assert.deepStrictEqual(
+    res.map((r) => Object.assign({}, r, { ttl: null })),
+    answers.map((r) => Object.assign({}, r, { ttl: null })));
+}