From: Bob Halley <halley@dnspython.org>
Date: Fri, 29 May 2020 15:51:22 +0000 (-0700)
Subject: test cache hit with live resolver
X-Git-Tag: v2.0.0rc1~141
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6feb56af3cbfcf33410722d63d8f73637e301a19;p=thirdparty%2Fdnspython.git

test cache hit with live resolver
---

diff --git a/tests/test_resolver.py b/tests/test_resolver.py
index abc1a0f2..c5814da6 100644
--- a/tests/test_resolver.py
+++ b/tests/test_resolver.py
@@ -393,6 +393,16 @@ class LiveResolverTests(unittest.TestCase):
             answer = dns.resolver.resolve(qname, qtype)
         self.assertRaises(dns.resolver.NXDOMAIN, bad)
 
+    @unittest.skipIf(not _network_available, "Internet not reachable")
+    def testResolveCacheHit(self):
+        res = dns.resolver.Resolver()
+        res.cache = dns.resolver.Cache()
+        answer1 = res.resolve('dns.google.', 'A')
+        seen = set([rdata.address for rdata in answer1])
+        self.assertTrue('8.8.8.8' in seen)
+        self.assertTrue('8.8.4.4' in seen)
+        answer2 = res.resolve('dns.google.', 'A')
+        self.assertTrue(answer2 is answer1)
 
 class PollingMonkeyPatchMixin(object):
     def setUp(self):