test: add dns.onlookupall() to increase coverage

Added test that callback should be called when error occurs
in dns.lookupall().

PR-URL: https://github.com/nodejs/node/pull/22985
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

1 files changed, 17 insertions, 1 deletions

diff --git a/test/internet/test-dns-lookup.js b/test/internet/test-dns-lookup.js
index b84f80735f..df5ccf99a5 100644
--- a/test/internet/test-dns-lookup.js
+++ b/test/internet/test-dns-lookup.js
@@ -1,7 +1,9 @@
 'use strict';
 
 require('../common');
-const dnsPromises = require('dns').promises;
+const common = require('../common');
+const dns = require('dns');
+const dnsPromises = dns.promises;
 const { addresses } = require('../common/internet');
 const assert = require('assert');
 
@@ -28,3 +30,17 @@ assert.rejects(
     message: `getaddrinfo ENOTFOUND ${addresses.INVALID_HOST}`
   }
 );
+
+dns.lookup(addresses.INVALID_HOST, {
+  hints: 0,
+  family: 0,
+  all: true
+}, common.mustCall((error) => {
+  assert.strictEqual(error.code, 'ENOTFOUND');
+  assert.strictEqual(
+    error.message,
+    `getaddrinfo ENOTFOUND ${addresses.INVALID_HOST}`
+  );
+  assert.strictEqual(error.syscall, 'getaddrinfo');
+  assert.strictEqual(error.hostname, addresses.INVALID_HOST);
+}));