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// 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 "sync/engine/syncer_util.h"
#include "base/rand_util.h"
#include "sync/internal_api/public/base/unique_position.h"
#include "sync/protocol/sync.pb.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace syncer {
class GetUpdatePositionTest : public ::testing::Test {
public:
GetUpdatePositionTest() {
InitUpdate();
// Init test_position to some valid position value, but don't assign
// it to the update just yet.
std::string pos_suffix = UniquePosition::RandomSuffix();
test_position = UniquePosition::InitialPosition(pos_suffix);
}
void InitUpdate() {
update.set_id_string("I");
update.set_parent_id_string("P");
update.set_version(10);
update.set_mtime(100);
update.set_ctime(100);
update.set_deleted(false);
update.mutable_specifics()->mutable_bookmark()->set_title("Chrome");
update.mutable_specifics()->mutable_bookmark()->
set_url("https://www.chrome.com");
}
void InitSuffixIngredients() {
update.set_originator_cache_guid("CacheGUID");
update.set_originator_client_item_id("OrigID");
}
void InitProtoPosition() {
test_position.ToProto(update.mutable_unique_position());
}
void InitInt64Position(int64 pos_value) {
update.set_position_in_parent(pos_value);
}
sync_pb::SyncEntity update;
UniquePosition test_position;
};
// Generate a suffix from originator client GUID and client-assigned ID. These
// values should always be present in updates sent down to the client, and
// combine to create a globally unique value.
TEST_F(GetUpdatePositionTest, SuffixFromUpdate) {
InitSuffixIngredients();
// Expect suffix is valid and consistent.
std::string suffix1 = GetUniqueBookmarkTagFromUpdate(update);
std::string suffix2 = GetUniqueBookmarkTagFromUpdate(update);
EXPECT_EQ(suffix1, suffix2);
EXPECT_TRUE(UniquePosition::IsValidSuffix(suffix1));
}
// Receive an update without the ingredients used to make a consistent suffix.
//
// The server should never send us an update like this. If it does,
// that's a bug and it needs to be fixed. Still, we'd like to not
// crash and have fairly reasonable results in this scenario.
TEST_F(GetUpdatePositionTest, SuffixFromRandom) {
// Intentonally do not call InitSuffixIngredients()
// Expect suffix is valid but inconsistent.
std::string suffix1 = GetUniqueBookmarkTagFromUpdate(update);
std::string suffix2 = GetUniqueBookmarkTagFromUpdate(update);
EXPECT_NE(suffix1, suffix2);
EXPECT_TRUE(UniquePosition::IsValidSuffix(suffix1));
EXPECT_TRUE(UniquePosition::IsValidSuffix(suffix2));
}
TEST_F(GetUpdatePositionTest, FromInt64) {
InitSuffixIngredients();
InitInt64Position(10);
std::string suffix = GetUniqueBookmarkTagFromUpdate(update);
// Expect the result is valid.
UniquePosition pos = GetUpdatePosition(update, suffix);
EXPECT_TRUE(pos.IsValid());
// Expect the position had some effect on ordering.
EXPECT_TRUE(pos.LessThan(
UniquePosition::FromInt64(11, UniquePosition::RandomSuffix())));
}
TEST_F(GetUpdatePositionTest, FromProto) {
InitSuffixIngredients();
InitInt64Position(10);
std::string suffix = GetUniqueBookmarkTagFromUpdate(update);
// The proto position is not set, so we should get one based on the int64.
// It should not match the proto we defined in the test harness.
UniquePosition int64_pos = GetUpdatePosition(update, suffix);
EXPECT_FALSE(int64_pos.Equals(test_position));
// Move the test harness' position value into the update proto.
// Expect that it takes precedence over the int64-based position.
InitProtoPosition();
UniquePosition pos = GetUpdatePosition(update, suffix);
EXPECT_TRUE(pos.Equals(test_position));
}
TEST_F(GetUpdatePositionTest, FromNothing) {
// Init none of the ingredients necessary to make a position.
// Verify we still generate a valid position locally.
std::string suffix = GetUniqueBookmarkTagFromUpdate(update);
UniquePosition pos = GetUpdatePosition(update, suffix);
EXPECT_TRUE(pos.IsValid());
}
} // namespace syncer
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