Add and persist a new field in AlternativeServiceInfo to list QUIC verisons advertised

net/http/http_server_properties_manager_unittest.cc

 // Copyright 2014 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_manager.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/scoped_mock_time_message_loop_task_runner.h"
 #include "base/test/test_mock_time_task_runner.h"
 #include "base/test/test_simple_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/values.h"
 #include "net/base/ip_address.h"
+#include "net/http/http_network_session.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 namespace net {
 
 namespace {
 
 using base::StringPrintf;
 using base::TestMockTimeTaskRunner;
@@ skipping 119 matching lines @@
 // TODO(rtenneti): After we stop supporting version 3 and everyone has migrated
 // to version 4, delete the following code.
 static const int kHttpServerPropertiesVersions[] = {3, 4, 5};
 
 class HttpServerPropertiesManagerTest : public testing::TestWithParam<int> {
  protected:
   HttpServerPropertiesManagerTest() = default;
 
   void SetUp() override {
     one_day_from_now_ = base::Time::Now() + base::TimeDelta::FromDays(1);
+    advertised_versions_ = HttpNetworkSession::Params().quic_supported_versions;
     pref_delegate_ = new MockPrefDelegate;
     http_server_props_manager_.reset(
         new StrictMock<TestingHttpServerPropertiesManager>(
             pref_delegate_, pref_test_task_runner_.task_runner(),
             net_test_task_runner_));
 
     EXPECT_FALSE(http_server_props_manager_->IsInitialized());
     ExpectCacheUpdate();
     EXPECT_FALSE(net_test_task_runner_->HasPendingTask());
     pref_test_task_runner_->RunUntilIdle();
@@ skipping 53 matching lines @@
   bool HasAlternativeService(const url::SchemeHostPort& server) {
     const AlternativeServiceInfoVector alternative_service_info_vector =
         http_server_props_manager_->GetAlternativeServiceInfos(server);
     return !alternative_service_info_vector.empty();
   }
 
   MockPrefDelegate* pref_delegate_;  // Owned by HttpServerPropertiesManager.
   std::unique_ptr<TestingHttpServerPropertiesManager>
       http_server_props_manager_;
   base::Time one_day_from_now_;
+  QuicVersionVector advertised_versions_;
 
   // Overrides the main thread's message loop with a mock tick clock. Making the
   // main thread the |pref_test_task_runner_| matches expectations better than
   // having an independent TestMockTimeTaskRunner and makes tests easier to
   // write.
   base::ScopedMockTimeMessageLoopTaskRunner pref_test_task_runner_;
 
   // Mock the net task runner as well.
   scoped_refptr<TestMockTimeTaskRunner> net_test_task_runner_ =
       new TestMockTimeTaskRunner;
@@ skipping 471 matching lines @@
 
 TEST_P(HttpServerPropertiesManagerTest, GetAlternativeServiceInfos) {
   ExpectPrefsUpdate(1);
   ExpectScheduleUpdatePrefsOnNetworkThread();
 
   url::SchemeHostPort spdy_server_mail("http", "mail.google.com", 80);
   EXPECT_FALSE(HasAlternativeService(spdy_server_mail));
   const AlternativeService alternative_service(kProtoHTTP2, "mail.google.com",
                                                443);
   http_server_props_manager_->SetAlternativeService(
-      spdy_server_mail, alternative_service, one_day_from_now_);
+      spdy_server_mail, alternative_service, one_day_from_now_,
+      advertised_versions_);
   // ExpectScheduleUpdatePrefsOnNetworkThread() should be called only once.
   http_server_props_manager_->SetAlternativeService(
-      spdy_server_mail, alternative_service, one_day_from_now_);
+      spdy_server_mail, alternative_service, one_day_from_now_,
+      advertised_versions_);
 
   // Run the task.
   EXPECT_FALSE(pref_test_task_runner_->HasPendingTask());
   EXPECT_TRUE(net_test_task_runner_->HasPendingTask());
   net_test_task_runner_->FastForwardUntilNoTasksRemain();
   EXPECT_TRUE(pref_test_task_runner_->HasPendingTask());
   EXPECT_FALSE(net_test_task_runner_->HasPendingTask());
   pref_test_task_runner_->FastForwardUntilNoTasksRemain();
   EXPECT_FALSE(pref_test_task_runner_->HasPendingTask());
   EXPECT_FALSE(net_test_task_runner_->HasPendingTask());
@@ skipping 72 matching lines @@
   {
     TestMockTimeTaskRunner::ScopedContext scoped_context(net_test_task_runner_);
 
     spdy_server_mail = url::SchemeHostPort("http", "mail.google.com", 80);
     EXPECT_FALSE(HasAlternativeService(spdy_server_mail));
     alternative_service =
         AlternativeService(kProtoHTTP2, "mail.google.com", 443);
 
     ExpectScheduleUpdatePrefsOnNetworkThread();
     http_server_props_manager_->SetAlternativeService(
-        spdy_server_mail, alternative_service, one_day_from_now_);
+        spdy_server_mail, alternative_service, one_day_from_now_,
+        advertised_versions_);
 
     EXPECT_FALSE(http_server_props_manager_->IsAlternativeServiceBroken(
         alternative_service));
     EXPECT_FALSE(
         http_server_props_manager_->WasAlternativeServiceRecentlyBroken(
             alternative_service));
 
     ExpectScheduleUpdatePrefsOnNetworkThread();
     http_server_props_manager_->MarkAlternativeServiceBroken(
         alternative_service);
@@ skipping 152 matching lines @@
   const QuicServerId mail_quic_server_id("mail.google.com", 80);
   const std::string quic_server_info1("quic_server_info1");
 
   {
     TestMockTimeTaskRunner::ScopedContext scoped_context(net_test_task_runner_);
 
     http_server_props_manager_->SetSupportsSpdy(spdy_server, true);
     AlternativeService alternative_service(kProtoHTTP2, "mail.google.com",
                                            1234);
     http_server_props_manager_->SetAlternativeService(
-        spdy_server, alternative_service, one_day_from_now_);
+        spdy_server, alternative_service, one_day_from_now_,
+        advertised_versions_);
     http_server_props_manager_->SetSupportsQuic(true, actual_address);
     ServerNetworkStats stats;
     stats.srtt = base::TimeDelta::FromMicroseconds(10);
     http_server_props_manager_->SetServerNetworkStats(spdy_server, stats);
 
     http_server_props_manager_->SetQuicServerInfo(mail_quic_server_id,
                                                   quic_server_info1);
   }
 
   // Run the task.
@@ skipping 150 matching lines @@
   const url::SchemeHostPort server_www("https", "www.google.com", 80);
   const url::SchemeHostPort server_mail("https", "mail.google.com", 80);
 
   // #1 & #2: Set alternate protocol.
   AlternativeServiceInfoVector alternative_service_info_vector;
   AlternativeService www_alternative_service1(kProtoHTTP2, "", 443);
   base::Time expiration1;
   ASSERT_TRUE(base::Time::FromUTCString("2036-12-01 10:00:00", &expiration1));
   alternative_service_info_vector.push_back(
       AlternativeServiceInfo(www_alternative_service1, expiration1));
+
   AlternativeService www_alternative_service2(kProtoHTTP2, "www.google.com",
                                               1234);
   base::Time expiration2;
   ASSERT_TRUE(base::Time::FromUTCString("2036-12-31 10:00:00", &expiration2));
   alternative_service_info_vector.push_back(
       AlternativeServiceInfo(www_alternative_service2, expiration2));
   ASSERT_TRUE(http_server_props_manager_->SetAlternativeServices(
       server_www, alternative_service_info_vector));
 
   AlternativeService mail_alternative_service(kProtoHTTP2, "foo.google.com",
                                               444);
   base::Time expiration3 = base::Time::Max();
   ASSERT_TRUE(http_server_props_manager_->SetAlternativeService(
-      server_mail, mail_alternative_service, expiration3));
+      server_mail, mail_alternative_service, expiration3,
+      advertised_versions_));
 
   // #3: Set ServerNetworkStats.
   ServerNetworkStats stats;
   stats.srtt = base::TimeDelta::FromInternalValue(42);
   http_server_props_manager_->SetServerNetworkStats(server_mail, stats);
 
   // #4: Set quic_server_info string.
   QuicServerId mail_quic_server_id("mail.google.com", 80);
   std::string quic_server_info1("quic_server_info1");
   http_server_props_manager_->SetQuicServerInfo(mail_quic_server_id,
@@ skipping 10 matching lines @@
   net_test_task_runner_->FastForwardUntilNoTasksRemain();
   EXPECT_TRUE(pref_test_task_runner_->HasPendingTask());
   pref_test_task_runner_->FastForwardUntilNoTasksRemain();
   EXPECT_FALSE(net_test_task_runner_->HasPendingTask());
   EXPECT_FALSE(pref_test_task_runner_->HasPendingTask());
 
   // Verify preferences.
   const char expected_json[] =
       "{\"quic_servers\":{\"https://"
       "mail.google.com:80\":{\"server_info\":\"quic_server_info1\"}},"
-      "\"servers\":["
-      "{\"https://www.google.com:80\":{"
-      "\"alternative_service\":[{\"expiration\":\"13756212000000000\","
-      "\"port\":443,\"protocol_str\":\"h2\"},"
-      "{\"expiration\":\"13758804000000000\",\"host\":\"www.google.com\","
-      "\"port\":1234,\"protocol_str\":\"h2\"}]}},"
+      "\"servers\":[{\"https://www.google.com:80\":{"
+      "\"alternative_service\":[{\"advertised_versions\":[],\"expiration\":"
+      "\"13756212000000000\",\"port\":443,\"protocol_str\":\"h2\"},"
+      "{\"advertised_versions\":[],\"expiration\":\"13758804000000000\","
+      "\"host\":\"www.google.com\",\"port\":1234,\"protocol_str\":\"h2\"}]}},"
       "{\"https://mail.google.com:80\":{\"alternative_service\":[{"
-      "\"expiration\":\"9223372036854775807\",\"host\":\"foo.google.com\","
-      "\"port\":444,\"protocol_str\":\"h2\"}],"
-      "\"network_stats\":{\"srtt\":42}}}"
-      "],"
+      "\"advertised_versions\":[],\"expiration\":\"9223372036854775807\","
+      "\"host\":\"foo.google.com\",\"port\":444,\"protocol_str\":\"h2\"}],"
+      "\"network_stats\":{\"srtt\":42}}}],"
       "\"supports_quic\":{\"address\":\"127.0.0.1\",\"used_quic\":true},"
       "\"version\":5}";
 
   const base::Value* http_server_properties =
       &pref_delegate_->GetServerProperties();
   std::string preferences_json;
   EXPECT_TRUE(
       base::JSONWriter::Write(*http_server_properties, &preferences_json));
   EXPECT_EQ(expected_json, preferences_json);
 }
@@ skipping 323 matching lines @@
   EXPECT_TRUE(pref_test_task_runner_->HasPendingTask());
   pref_test_task_runner_->FastForwardUntilNoTasksRemain();
   EXPECT_FALSE(net_test_task_runner_->HasPendingTask());
   EXPECT_FALSE(pref_test_task_runner_->HasPendingTask());
   Mock::VerifyAndClearExpectations(http_server_props_manager_.get());
   http_server_props_manager_.reset();
   EXPECT_FALSE(net_test_task_runner_->HasPendingTask());
   EXPECT_FALSE(pref_test_task_runner_->HasPendingTask());
 }
 
+TEST_P(HttpServerPropertiesManagerTest, PersistAdvertisedVersionsToPref) {
+  ExpectScheduleUpdatePrefsOnNetworkThreadRepeatedly(5);
+
+  const url::SchemeHostPort server_www("https", "www.google.com", 80);
+  const url::SchemeHostPort server_mail("https", "mail.google.com", 80);
+
+  // #1 & #2: Set alternate protocol.
+  AlternativeServiceInfoVector alternative_service_info_vector;
+  // Quic alternative service set with two advertised QUIC versions.
+  AlternativeService quic_alternative_service1(kProtoQUIC, "", 443);
+  base::Time expiration1;
+  ASSERT_TRUE(base::Time::FromUTCString("2036-12-01 10:00:00", &expiration1));
+  QuicVersionVector advertised_versions = {QUIC_VERSION_37, QUIC_VERSION_35};
+  alternative_service_info_vector.push_back(AlternativeServiceInfo(
+      quic_alternative_service1, expiration1, advertised_versions));
+  // HTTP/2 alternative service should not set any advertised version.
+  AlternativeService h2_alternative_service(kProtoHTTP2, "www.google.com",
+                                            1234);
+  base::Time expiration2;
+  ASSERT_TRUE(base::Time::FromUTCString("2036-12-31 10:00:00", &expiration2));
+  alternative_service_info_vector.push_back(
+      AlternativeServiceInfo(h2_alternative_service, expiration2));
+  ASSERT_TRUE(http_server_props_manager_->SetAlternativeServices(
+      server_www, alternative_service_info_vector));
+
+  // Set another QUIC alternative service with a single advertised QUIC version.
+  AlternativeService mail_alternative_service(kProtoQUIC, "foo.google.com",
+                                              444);
+  base::Time expiration3 = base::Time::Max();
+  ASSERT_TRUE(http_server_props_manager_->SetAlternativeService(
+      server_mail, mail_alternative_service, expiration3,
+      advertised_versions_));
+  // #3: Set ServerNetworkStats.
+  ServerNetworkStats stats;
+  stats.srtt = base::TimeDelta::FromInternalValue(42);
+  http_server_props_manager_->SetServerNetworkStats(server_mail, stats);
+
+  // #4: Set quic_server_info string.
+  QuicServerId mail_quic_server_id("mail.google.com", 80);
+  std::string quic_server_info1("quic_server_info1");
+  http_server_props_manager_->SetQuicServerInfo(mail_quic_server_id,
+                                                quic_server_info1);
+
+  // #5: Set SupportsQuic.
+  IPAddress actual_address(127, 0, 0, 1);
+  http_server_props_manager_->SetSupportsQuic(true, actual_address);
+
+  // Update Prefs.
+  ExpectPrefsUpdate(1);
+  EXPECT_TRUE(net_test_task_runner_->HasPendingTask());
+  EXPECT_FALSE(pref_test_task_runner_->HasPendingTask());
+  net_test_task_runner_->FastForwardUntilNoTasksRemain();
+  EXPECT_TRUE(pref_test_task_runner_->HasPendingTask());
+  pref_test_task_runner_->FastForwardUntilNoTasksRemain();
+  EXPECT_FALSE(net_test_task_runner_->HasPendingTask());
+  EXPECT_FALSE(pref_test_task_runner_->HasPendingTask());
+
+  // Verify preferences with correct advertised version field.
+  const char expected_json[] =
+      "{\"quic_servers\":{\"https://mail.google.com:80\":{"
+      "\"server_info\":\"quic_server_info1\"}},\"servers\":["
+      "{\"https://www.google.com:80\":{\"alternative_service\":[{"
+      "\"advertised_versions\":[35,37],\"expiration\":\"13756212000000000\","
+      "\"port\":443,\"protocol_str\":\"quic\"},{\"advertised_versions\":[],"
+      "\"expiration\":\"13758804000000000\",\"host\":\"www.google.com\","
+      "\"port\":1234,\"protocol_str\":\"h2\"}]}},"
+      "{\"https://mail.google.com:80\":{\"alternative_service\":[{"
+      "\"advertised_versions\":[37],\"expiration\":\"9223372036854775807\","
+      "\"host\":\"foo.google.com\",\"port\":444,\"protocol_str\":\"quic\"}],"
+      "\"network_stats\":{\"srtt\":42}}}],\"supports_quic\":{"
+      "\"address\":\"127.0.0.1\",\"used_quic\":true},\"version\":5}";
+
+  const base::Value* http_server_properties =
+      &pref_delegate_->GetServerProperties();
+  std::string preferences_json;
+  EXPECT_TRUE(
+      base::JSONWriter::Write(*http_server_properties, &preferences_json));
+  EXPECT_EQ(expected_json, preferences_json);
+}
+
+TEST_P(HttpServerPropertiesManagerTest, ReadAdvertisedVersionsFromPref) {
+  std::unique_ptr<base::Value> server_value = base::JSONReader::Read(
+      "{\"alternative_service\":["
+      "{\"port\":443,\"protocol_str\":\"quic\"},"
+      "{\"port\":123,\"protocol_str\":\"quic\","
+      "\"expiration\":\"9223372036854775807\","
+      "\"advertised_versions\":[37,35]}]}");
+  ASSERT_TRUE(server_value);
+  base::DictionaryValue* server_dict;
+  ASSERT_TRUE(server_value->GetAsDictionary(&server_dict));
+
+  const url::SchemeHostPort server("https", "example.com", 443);
+  AlternativeServiceMap alternative_service_map(/*max_size=*/5);
+  EXPECT_TRUE(http_server_props_manager_->AddToAlternativeServiceMap(
+      server, *server_dict, &alternative_service_map));
+
+  AlternativeServiceMap::iterator it = alternative_service_map.Get(server);
+  ASSERT_NE(alternative_service_map.end(), it);
+  AlternativeServiceInfoVector alternative_service_info_vector = it->second;
+  ASSERT_EQ(2u, alternative_service_info_vector.size());
+
+  // Verify the first alternative service with no advertised version listed.
+  EXPECT_EQ(kProtoQUIC,
+            alternative_service_info_vector[0].alternative_service.protocol);
+  EXPECT_EQ("", alternative_service_info_vector[0].alternative_service.host);
+  EXPECT_EQ(443, alternative_service_info_vector[0].alternative_service.port);
+  // Expiration defaults to one day from now, testing with tolerance.
+  const base::Time now = base::Time::Now();
+  const base::Time expiration = alternative_service_info_vector[0].expiration;
+  EXPECT_LE(now + base::TimeDelta::FromHours(23), expiration);
+  EXPECT_GE(now + base::TimeDelta::FromDays(1), expiration);
+  EXPECT_TRUE(alternative_service_info_vector[0].advertised_versions().empty());
+
+  // Verify the second alterntaive service with two advertised versions.
+  EXPECT_EQ(kProtoQUIC,
+            alternative_service_info_vector[1].alternative_service.protocol);
+  EXPECT_EQ("", alternative_service_info_vector[1].alternative_service.host);
+  EXPECT_EQ(123, alternative_service_info_vector[1].alternative_service.port);
+  EXPECT_EQ(base::Time::Max(), alternative_service_info_vector[1].expiration);
+  // Verify advertised versions.
+  const QuicVersionVector loaded_advertised_versions =
+      alternative_service_info_vector[1].advertised_versions();
+  EXPECT_EQ(2u, loaded_advertised_versions.size());
+  EXPECT_EQ(QUIC_VERSION_35, loaded_advertised_versions[0]);
+  EXPECT_EQ(QUIC_VERSION_37, loaded_advertised_versions[1]);
+}
+
+TEST_P(HttpServerPropertiesManagerTest,
+       UpdatePrefWhenAdvertisedVersionsChange) {
+  ExpectScheduleUpdatePrefsOnNetworkThreadRepeatedly(4);
+
+  const url::SchemeHostPort server_www("https", "www.google.com", 80);
+
+  // #1: Set alternate protocol.
+  AlternativeServiceInfoVector alternative_service_info_vector;
+  // Quic alternative service set with a single QUIC version: QUIC_VERSION_37.
+  AlternativeService quic_alternative_service1(kProtoQUIC, "", 443);
+  base::Time expiration1;
+  ASSERT_TRUE(base::Time::FromUTCString("2036-12-01 10:00:00", &expiration1));
+  alternative_service_info_vector.push_back(AlternativeServiceInfo(
+      quic_alternative_service1, expiration1, advertised_versions_));
+  ASSERT_TRUE(http_server_props_manager_->SetAlternativeServices(
+      server_www, alternative_service_info_vector));
+
+  // Set quic_server_info string.
+  QuicServerId mail_quic_server_id("mail.google.com", 80);
+  std::string quic_server_info1("quic_server_info1");
+  http_server_props_manager_->SetQuicServerInfo(mail_quic_server_id,
+                                                quic_server_info1);
+
+  // Set SupportsQuic.
+  IPAddress actual_address(127, 0, 0, 1);
+  http_server_props_manager_->SetSupportsQuic(true, actual_address);
+
+  // Update Prefs.
+  ExpectPrefsUpdate(1);
+  EXPECT_TRUE(net_test_task_runner_->HasPendingTask());
+  EXPECT_FALSE(pref_test_task_runner_->HasPendingTask());
+  net_test_task_runner_->FastForwardUntilNoTasksRemain();
+  EXPECT_TRUE(pref_test_task_runner_->HasPendingTask());
+  pref_test_task_runner_->FastForwardUntilNoTasksRemain();
+  EXPECT_FALSE(net_test_task_runner_->HasPendingTask());
+  EXPECT_FALSE(pref_test_task_runner_->HasPendingTask());
+
+  // Verify preferences with correct advertised version field.
+  const char expected_json[] =
+      "{\"quic_servers\":{\"https://mail.google.com:80\":"
+      "{\"server_info\":\"quic_server_info1\"}},\"servers\":["
+      "{\"https://www.google.com:80\":"
+      "{\"alternative_service\":[{\"advertised_versions\":[37],"
+      "\"expiration\":\"13756212000000000\",\"port\":443,"
+      "\"protocol_str\":\"quic\"}]}}],\"supports_quic\":"
+      "{\"address\":\"127.0.0.1\",\"used_quic\":true},\"version\":5}";
+
+  const base::Value* http_server_properties =
+      &pref_delegate_->GetServerProperties();
+  std::string preferences_json;
+  EXPECT_TRUE(
+      base::JSONWriter::Write(*http_server_properties, &preferences_json));
+  EXPECT_EQ(expected_json, preferences_json);
+
+  // #2: Set AlternativeService with different advertised_versions for the same
+  // AlternativeService.
+  AlternativeServiceInfoVector alternative_service_info_vector_2;
+  // Quic alternative service set with two advertised QUIC versions.
+  QuicVersionVector advertised_versions = {QUIC_VERSION_37, QUIC_VERSION_35};
+  alternative_service_info_vector_2.push_back(AlternativeServiceInfo(
+      quic_alternative_service1, expiration1, advertised_versions));
+  ASSERT_TRUE(http_server_props_manager_->SetAlternativeServices(
+      server_www, alternative_service_info_vector_2));
+
+  // Update Prefs.
+  ExpectPrefsUpdate(1);
+  EXPECT_TRUE(net_test_task_runner_->HasPendingTask());
+  EXPECT_FALSE(pref_test_task_runner_->HasPendingTask());
+  net_test_task_runner_->FastForwardUntilNoTasksRemain();
+  EXPECT_TRUE(pref_test_task_runner_->HasPendingTask());
+  pref_test_task_runner_->FastForwardUntilNoTasksRemain();
+  EXPECT_FALSE(net_test_task_runner_->HasPendingTask());
+  EXPECT_FALSE(pref_test_task_runner_->HasPendingTask());
+
+  // Verify preferences updated with new advertised versions.
+  const char expected_json_updated[] =
+      "{\"quic_servers\":{\"https://mail.google.com:80\":"
+      "{\"server_info\":\"quic_server_info1\"}},\"servers\":["
+      "{\"https://www.google.com:80\":"
+      "{\"alternative_service\":[{\"advertised_versions\":[35,37],"
+      "\"expiration\":\"13756212000000000\",\"port\":443,"
+      "\"protocol_str\":\"quic\"}]}}],\"supports_quic\":"
+      "{\"address\":\"127.0.0.1\",\"used_quic\":true},\"version\":5}";
+  EXPECT_TRUE(
+      base::JSONWriter::Write(*http_server_properties, &preferences_json));
+  EXPECT_EQ(expected_json_updated, preferences_json);
+
+  // #3: Set AlternativeService with same advertised_versions.
+  AlternativeServiceInfoVector alternative_service_info_vector_3;
+  // A same set of QUIC versions but listed in a different order.
+  QuicVersionVector advertised_versions_2 = {QUIC_VERSION_35, QUIC_VERSION_37};
+  alternative_service_info_vector_3.push_back(AlternativeServiceInfo(
+      quic_alternative_service1, expiration1, advertised_versions_2));
+  ASSERT_FALSE(http_server_props_manager_->SetAlternativeServices(
+      server_www, alternative_service_info_vector_3));
+
+  // No Prefs update.
+  EXPECT_FALSE(net_test_task_runner_->HasPendingTask());
+  EXPECT_FALSE(pref_test_task_runner_->HasPendingTask());
+}
+
 }  // namespace net