test: print helpful err msg on test-dns-ipv6.js

The test sometimes fail on an assertion but no useful error message was generated for debugging. Modify the test to generate useful debugging message. PR-URL: #3501 Reviewed-By: Trevor Norris <[email protected]> Reviewed-By: Rich Trott <[email protected]>
nodejs · Oct 26, 2015 · 9d8d752 · 9d8d752
1 parent 60de9f8
commit 9d8d752
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/test/internet/test-dns-ipv6.js b/test/internet/test-dns-ipv6.js
@@ -165,7 +165,8 @@ TEST(function test_lookup_all_ipv6(done) {
     assert.ok(ips.length > 0);
 
     ips.forEach(function(ip) {
-      assert.ok(isIPv6(ip.address));
+      assert.ok(isIPv6(ip.address),
+                'Invalid IPv6: ' + ip.address.toString());
       assert.strictEqual(ip.family, 6);
     });