sync/engine/syncer_util_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "sync/engine/syncer_util.h"
   6
   7 #include "base/rand_util.h"
   8 #include "sync/internal_api/public/base/unique_position.h"
   9 #include "sync/internal_api/public/test/test_entry_factory.h"
  10 #include "sync/protocol/sync.pb.h"
  11 #include "sync/syncable/mutable_entry.h"
  12 #include "sync/syncable/syncable_write_transaction.h"
  13 #include "sync/test/engine/test_directory_setter_upper.h"
  14 #include "testing/gtest/include/gtest/gtest.h"
  15
  16 namespace syncer {
  17
  18 class GetUpdatePositionTest : public ::testing::Test {
  19  public:
  20   void SetUp() override {
  21     dir_maker_.SetUp();
  22     entry_factory_.reset(new TestEntryFactory(directory()));
  23   }
  24
  25   void TearDown() override { dir_maker_.TearDown(); }
  26
  27   syncable::Directory* directory() {
  28     return dir_maker_.directory();
  29   }
  30
  31   TestEntryFactory* entry_factory() {
  32     return entry_factory_.get();
  33   }
  34
  35   GetUpdatePositionTest() {
  36     InitUpdate();
  37
  38     // Init test_position to some valid position value, but don't assign
  39     // it to the update just yet.
  40     std::string pos_suffix = UniquePosition::RandomSuffix();
  41     test_position = UniquePosition::InitialPosition(pos_suffix);
  42   }
  43
  44   void InitUpdate() {
  45     update.set_id_string("I");
  46     update.set_parent_id_string("P");
  47     update.set_version(10);
  48     update.set_mtime(100);
  49     update.set_ctime(100);
  50     update.set_deleted(false);
  51     update.mutable_specifics()->mutable_bookmark()->set_title("Chrome");
  52     update.mutable_specifics()->mutable_bookmark()->
  53         set_url("https://www.chrome.com");
  54   }
  55
  56   void InitSuffixIngredients() {
  57     update.set_originator_cache_guid("CacheGUID");
  58     update.set_originator_client_item_id("OrigID");
  59   }
  60
  61   void InitProtoPosition() {
  62     test_position.ToProto(update.mutable_unique_position());
  63   }
  64
  65   void InitInt64Position(int64 pos_value) {
  66     update.set_position_in_parent(pos_value);
  67   }
  68
  69   sync_pb::SyncEntity update;
  70   UniquePosition test_position;
  71   base::MessageLoop message_loop_;
  72   TestDirectorySetterUpper dir_maker_;
  73   scoped_ptr<TestEntryFactory> entry_factory_;
  74 };
  75
  76 // Generate a suffix from originator client GUID and client-assigned ID.  These
  77 // values should always be present in updates sent down to the client, and
  78 // combine to create a globally unique value.
  79 TEST_F(GetUpdatePositionTest, SuffixFromUpdate) {
  80   InitSuffixIngredients();
  81
  82   // Expect suffix is valid and consistent.
  83   std::string suffix1 = GetUniqueBookmarkTagFromUpdate(update);
  84   std::string suffix2 = GetUniqueBookmarkTagFromUpdate(update);
  85
  86   EXPECT_EQ(suffix1, suffix2);
  87   EXPECT_TRUE(UniquePosition::IsValidSuffix(suffix1));
  88 }
  89
  90 // Receive an update without the ingredients used to make a consistent suffix.
  91 //
  92 // The server should never send us an update like this.  If it does,
  93 // that's a bug and it needs to be fixed.  Still, we'd like to not
  94 // crash and have fairly reasonable results in this scenario.
  95 TEST_F(GetUpdatePositionTest, SuffixFromRandom) {
  96   // Intentonally do not call InitSuffixIngredients()
  97
  98   // Expect suffix is valid but inconsistent.
  99   std::string suffix1 = GetUniqueBookmarkTagFromUpdate(update);
 100   std::string suffix2 = GetUniqueBookmarkTagFromUpdate(update);
 101
 102   EXPECT_NE(suffix1, suffix2);
 103   EXPECT_TRUE(UniquePosition::IsValidSuffix(suffix1));
 104   EXPECT_TRUE(UniquePosition::IsValidSuffix(suffix2));
 105 }
 106
 107 TEST_F(GetUpdatePositionTest, FromInt64) {
 108   InitSuffixIngredients();
 109   InitInt64Position(10);
 110
 111   std::string suffix = GetUniqueBookmarkTagFromUpdate(update);
 112
 113   // Expect the result is valid.
 114   UniquePosition pos = GetUpdatePosition(update, suffix);
 115   EXPECT_TRUE(pos.IsValid());
 116
 117   // Expect the position had some effect on ordering.
 118   EXPECT_TRUE(pos.LessThan(
 119       UniquePosition::FromInt64(11, UniquePosition::RandomSuffix())));
 120 }
 121
 122 TEST_F(GetUpdatePositionTest, FromProto) {
 123   InitSuffixIngredients();
 124   InitInt64Position(10);
 125
 126   std::string suffix = GetUniqueBookmarkTagFromUpdate(update);
 127
 128   // The proto position is not set, so we should get one based on the int64.
 129   // It should not match the proto we defined in the test harness.
 130   UniquePosition int64_pos = GetUpdatePosition(update, suffix);
 131   EXPECT_FALSE(int64_pos.Equals(test_position));
 132
 133   // Move the test harness' position value into the update proto.
 134   // Expect that it takes precedence over the int64-based position.
 135   InitProtoPosition();
 136   UniquePosition pos = GetUpdatePosition(update, suffix);
 137   EXPECT_TRUE(pos.Equals(test_position));
 138 }
 139
 140 TEST_F(GetUpdatePositionTest, FromNothing) {
 141   // Init none of the ingredients necessary to make a position.
 142   // Verify we still generate a valid position locally.
 143
 144   std::string suffix = GetUniqueBookmarkTagFromUpdate(update);
 145   UniquePosition pos = GetUpdatePosition(update, suffix);
 146   EXPECT_TRUE(pos.IsValid());
 147 }
 148
 149 namespace {
 150
 151 sync_pb::EntitySpecifics DefaultBookmarkSpecifics() {
 152   sync_pb::EntitySpecifics result;
 153   AddDefaultFieldValue(BOOKMARKS, &result);
 154   return result;
 155 }
 156
 157 }  // namespace
 158
 159 // Checks that whole cycle of unique_position updating from
 160 // server works fine and does not browser crash.
 161 TEST_F(GetUpdatePositionTest, UpdateServerFieldsFromUpdateTest) {
 162   InitSuffixIngredients();  // Initialize update with valid data.
 163
 164   std::string root_server_id = syncable::Id::GetRoot().GetServerId();
 165   int64 handle = entry_factory()->CreateUnappliedNewBookmarkItemWithParent(
 166       "I", DefaultBookmarkSpecifics(), root_server_id);
 167
 168   syncable::WriteTransaction trans(FROM_HERE, syncable::UNITTEST, directory());
 169   syncable::MutableEntry target(&trans, syncable::GET_BY_HANDLE, handle);
 170
 171   // Before update, target has invalid bookmark tag and unique position.
 172   EXPECT_FALSE(UniquePosition::IsValidSuffix(target.GetUniqueBookmarkTag()));
 173   EXPECT_FALSE(target.GetServerUniquePosition().IsValid());
 174   UpdateServerFieldsFromUpdate(&target, update, "name");
 175
 176   // After update, target has valid bookmark tag and unique position.
 177   EXPECT_TRUE(UniquePosition::IsValidSuffix(target.GetUniqueBookmarkTag()));
 178   EXPECT_TRUE(target.GetServerUniquePosition().IsValid());
 179 }
 180
 181 // Checks that whole cycle of unique_position updating does not
 182 // browser crash even data from server is invalid.
 183 // It looks like server bug, but browser should not crash and work further.
 184 TEST_F(GetUpdatePositionTest, UpdateServerFieldsFromInvalidUpdateTest) {
 185   // Do not initialize data in update, update is invalid.
 186
 187   std::string root_server_id = syncable::Id::GetRoot().GetServerId();
 188   int64 handle = entry_factory()->CreateUnappliedNewBookmarkItemWithParent(
 189       "I", DefaultBookmarkSpecifics(), root_server_id);
 190
 191   syncable::WriteTransaction trans(FROM_HERE, syncable::UNITTEST, directory());
 192   syncable::MutableEntry target(&trans, syncable::GET_BY_HANDLE, handle);
 193
 194   // Before update, target has invalid bookmark tag and unique position.
 195   EXPECT_FALSE(UniquePosition::IsValidSuffix(target.GetUniqueBookmarkTag()));
 196   EXPECT_FALSE(target.GetServerUniquePosition().IsValid());
 197   UpdateServerFieldsFromUpdate(&target, update, "name");
 198
 199   // After update, target has valid bookmark tag and unique position.
 200   EXPECT_TRUE(UniquePosition::IsValidSuffix(target.GetUniqueBookmarkTag()));
 201   EXPECT_TRUE(target.GetServerUniquePosition().IsValid());
 202 }
 203
 204 }  // namespace syncer