Add test for canonical host alternative service.

net/http/http_server_properties_impl_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/http/http_server_properties_impl.h"
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 427 matching lines @@
   EXPECT_EQ(canonical_altsvc.port, alternative_service.port);
   EXPECT_EQ(canonical_altsvc.protocol, alternative_service.protocol);
 
   // Verify the canonical suffix.
   EXPECT_EQ(".c.youtube.com",
             impl_.GetCanonicalSuffix(test_host_port_pair.host()));
   EXPECT_EQ(".c.youtube.com",
             impl_.GetCanonicalSuffix(canonical_port_pair.host()));
 }
 
+TEST_F(AlternateProtocolServerPropertiesTest, CanonicalDefaultHost) {
+  HostPortPair test_host_port_pair("foo.c.youtube.com", 80);
+  EXPECT_FALSE(HasAlternativeService(test_host_port_pair));
+
+  HostPortPair canonical_port_pair("bar.c.youtube.com", 80);
+  EXPECT_FALSE(HasAlternativeService(canonical_port_pair));
+
+  AlternativeService canonical_altsvc(QUIC, "", 1234);
+  impl_.SetAlternativeService(canonical_port_pair, canonical_altsvc, 1.0);
+  ASSERT_TRUE(HasAlternativeService(test_host_port_pair));
+  const AlternativeService alternative_service =
+      impl_.GetAlternativeService(test_host_port_pair);
+  EXPECT_EQ(canonical_altsvc.protocol, alternative_service.protocol);
+  EXPECT_EQ(test_host_port_pair.host(), alternative_service.host);

[Ryan Hamilton, 2015/03/23 20:48:07]

This is great! Nice.

That being said, I'm astounded that it works! :> Did you explicitly implement
this behavior in an earlier CL?

+  EXPECT_EQ(canonical_altsvc.port, alternative_service.port);
+}
+
 TEST_F(AlternateProtocolServerPropertiesTest, CanonicalBelowThreshold) {
   impl_.SetAlternateProtocolProbabilityThreshold(0.02);
 
   HostPortPair test_host_port_pair("foo.c.youtube.com", 80);
   HostPortPair canonical_port_pair("bar.c.youtube.com", 80);
   AlternativeService canonical_altsvc(QUIC, "bar.c.youtube.com", 1234);
 
   impl_.SetAlternativeService(canonical_port_pair, canonical_altsvc, 0.01);
   EXPECT_FALSE(HasAlternativeService(canonical_port_pair));
   EXPECT_FALSE(HasAlternativeService(test_host_port_pair));
@@ skipping 327 matching lines @@
   EXPECT_EQ(100, stats2->bandwidth_estimate.ToBitsPerSecond());
 
   impl_.Clear();
   const ServerNetworkStats* stats3 = impl_.GetServerNetworkStats(foo_server);
   EXPECT_EQ(NULL, stats3);
 }
 
 }  // namespace
 
 }  // namespace net