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test: improve dns internet test case

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0.0.0.0 is more common than other special ipv4 addresses, so
it is possible that we may not get ENOTFOUND for such addresses.
Instead, this commit uses a less common address that is reserved
for documentation (RFC) use only.

PR-URL: https://github.com/nodejs/node/pull/13261
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: James M Snell <jasnell@gmail.com>
This commit is contained in:
Brian White authored and James M Snell committed 2017-06-05 12:23:29 -07:00
1 parent 315c3aaf43
commit dccd1d2d31
1 file changed
+4 -3
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test/internet/test-dns.js
+4 -3
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@@ -492,11 +492,12 @@ TEST(function test_lookupservice_invalid(done) {
TEST(function test_reverse_failure(done) {
const req = dns.reverse('0.0.0.0', function(err) {
// 203.0.113.0/24 are addresses reserved for (RFC) documentation use only
const req = dns.reverse('203.0.113.0', function(err) {
assert(err instanceof Error);
assert.strictEqual(err.code, 'ENOTFOUND'); // Silly error code...
assert.strictEqual(err.hostname, '0.0.0.0');
assert.ok(/0\.0\.0\.0/.test(err.message));
assert.strictEqual(err.hostname, '203.0.113.0');
assert.ok(/203\.0\.113\.0/.test(err.message));
done();
});