Cache for mDNS records

net/dns/record_parsed_unittest.cc

Index: net/dns/record_parsed_unittest.cc
diff --git a/net/dns/record_parsed_unittest.cc b/net/dns/record_parsed_unittest.cc
index bb82b53b02eda68b90d41c57ef5f0fda0606a821..3bfecabc438abb7fd0043592f724f2a89fbdbe1b 100644
--- a/net/dns/record_parsed_unittest.cc
+++ b/net/dns/record_parsed_unittest.cc
@@ -12,6 +12,24 @@
 
 namespace net {
 
+static const char kT1ResponseWithCacheFlushBit[] = {
+  0x0a, 'c', 'o', 'd', 'e', 'r', 'e', 'v', 'i', 'e', 'w',
+  0x08, 'c', 'h', 'r', 'o', 'm', 'i', 'u', 'm',
+  0x03, 'o', 'r', 'g',
+  0x00,
+  0x00, 0x05,        // TYPE is CNAME.
+  0x80, 0x01,        // CLASS is IN with cache flush bit set.
+  0x00, 0x01,        // TTL (4 bytes) is 20 hours, 47 minutes, 48 seconds.
+  0x24, 0x74,
+  0x00, 0x12,        // RDLENGTH is 18 bytes.
+  // ghs.l.google.com in DNS format.
+  0x03, 'g', 'h', 's',
+  0x01, 'l',
+  0x06, 'g', 'o', 'o', 'g', 'l', 'e',
+  0x03, 'c', 'o', 'm',
+  0x00
+};
+
 TEST(RecordParsedTest, ParseSingleRecord) {
   DnsRecordParser parser(kT1ResponseDatagram, sizeof(kT1ResponseDatagram),
                          sizeof(dns_protocol::Header));
@@ -19,7 +37,7 @@ TEST(RecordParsedTest, ParseSingleRecord) {
   const CnameRecordRdata* rdata;
 
   parser.SkipQuestion();
-  record = RecordParsed::CreateFrom(&parser);
+  record = RecordParsed::CreateFrom(&parser, base::Time());
   EXPECT_TRUE(record != NULL);
 
   ASSERT_EQ("codereview.chromium.org", record->name());
@@ -31,5 +49,52 @@ TEST(RecordParsedTest, ParseSingleRecord) {
   ASSERT_EQ(kT1CanonName, rdata->cname());
 
   ASSERT_FALSE(record->rdata<SrvRecordRdata>());
+  ASSERT_TRUE(record->IsEqual(record.get(), true));
+}
+
+TEST(RecordParsedTest, CopyConstructor) {
+  DnsRecordParser parser(kT1ResponseDatagram, sizeof(kT1ResponseDatagram),
+                         sizeof(dns_protocol::Header));
+  scoped_ptr<const RecordParsed> record;
+  const CnameRecordRdata* rdata;
+
+  parser.SkipQuestion();
+  record = RecordParsed::CreateFrom(&parser, base::Time());
+  EXPECT_TRUE(record.get() != NULL);
+
+  scoped_ptr<RecordParsed> record2;
+  record2.reset(new RecordParsed(*record));
+
+  record.reset();
+
+  ASSERT_EQ("codereview.chromium.org", record2->name());
+  ASSERT_EQ(dns_protocol::kTypeCNAME, record2->type());
+  ASSERT_EQ(dns_protocol::kClassIN, record2->klass());
+
+  rdata = record2->rdata<CnameRecordRdata>();
+  EXPECT_TRUE(rdata != NULL);
+  ASSERT_EQ(kT1CanonName, rdata->cname());
+
+  ASSERT_FALSE(record2->rdata<SrvRecordRdata>());
+}
+
+TEST(RecordParsedTest, CacheFlushBitCompare) {
+  DnsRecordParser parser1(kT1ResponseDatagram, sizeof(kT1ResponseDatagram),
+                         sizeof(dns_protocol::Header));
+  parser1.SkipQuestion();
+  scoped_ptr<const RecordParsed> record1 =
+      RecordParsed::CreateFrom(&parser1, base::Time());
+
+  DnsRecordParser parser2(kT1ResponseWithCacheFlushBit,
+                          sizeof(kT1ResponseWithCacheFlushBit),
+                          0);
+
+  scoped_ptr<const RecordParsed> record2 =
+      RecordParsed::CreateFrom(&parser2, base::Time());
+
+  EXPECT_FALSE(record1->IsEqual(record2.get(), false));
+  EXPECT_TRUE(record1->IsEqual(record2.get(), true));
+  EXPECT_FALSE(record2->IsEqual(record1.get(), false));
+  EXPECT_TRUE(record2->IsEqual(record1.get(), true));
 }
 }