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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 "components/sync/engine_impl/worker_entity_tracker.h"
#include "components/sync/base/hash_util.h"
#include "components/sync/base/model_type.h"
#include "components/sync/base/time.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace syncer {
// Some simple tests for the WorkerEntityTracker.
//
// The WorkerEntityTracker is an implementation detail of the ModelTypeWorker.
// As such, it doesn't make much sense to test it exhaustively, since it
// already gets a lot of test coverage from the ModelTypeWorker unit tests.
//
// These tests are intended as a basic sanity check. Anything more complicated
// would be redundant.
class WorkerEntityTrackerTest : public ::testing::Test {
public:
WorkerEntityTrackerTest()
: kServerId("ServerID"),
kClientTag("some.sample.tag"),
kClientTagHash(GenerateSyncableHash(PREFERENCES, kClientTag)),
kSpecificsHash("somehash"),
kCtime(base::Time::UnixEpoch() + base::TimeDelta::FromDays(10)),
kMtime(base::Time::UnixEpoch() + base::TimeDelta::FromDays(20)),
entity_(new WorkerEntityTracker(kClientTagHash)) {
specifics.mutable_preference()->set_name(kClientTag);
specifics.mutable_preference()->set_value("pref.value");
}
~WorkerEntityTrackerTest() override {}
CommitRequestData MakeCommitRequestData(int64_t sequence_number,
int64_t base_version) {
EntityData data;
data.client_tag_hash = kClientTagHash;
data.creation_time = kCtime;
data.modification_time = kMtime;
data.specifics = specifics;
data.non_unique_name = kClientTag;
CommitRequestData request_data;
request_data.entity = data.PassToPtr();
request_data.sequence_number = sequence_number;
request_data.base_version = base_version;
request_data.specifics_hash = kSpecificsHash;
return request_data;
}
UpdateResponseData MakeUpdateResponseData(int64_t response_version) {
EntityData data;
data.id = kServerId;
data.client_tag_hash = kClientTagHash;
UpdateResponseData response_data;
response_data.entity = data.PassToPtr();
response_data.response_version = response_version;
return response_data;
}
const std::string kServerId;
const std::string kClientTag;
const std::string kClientTagHash;
const std::string kSpecificsHash;
const base::Time kCtime;
const base::Time kMtime;
sync_pb::EntitySpecifics specifics;
std::unique_ptr<WorkerEntityTracker> entity_;
};
// Construct a new entity from a server update. Then receive another update.
TEST_F(WorkerEntityTrackerTest, FromUpdateResponse) {
EXPECT_FALSE(entity_->HasPendingCommit());
EXPECT_EQ("", entity_->id());
entity_->ReceiveUpdate(MakeUpdateResponseData(20));
EXPECT_FALSE(entity_->HasPendingCommit());
EXPECT_EQ(kServerId, entity_->id());
}
// Construct a new entity from a commit request. Then serialize it.
TEST_F(WorkerEntityTrackerTest, FromCommitRequest) {
const int64_t kSequenceNumber = 22;
const int64_t kBaseVersion = 33;
CommitRequestData data = MakeCommitRequestData(kSequenceNumber, kBaseVersion);
entity_->RequestCommit(data);
EXPECT_EQ("", entity_->id());
ASSERT_TRUE(entity_->HasPendingCommit());
sync_pb::SyncEntity pb_entity;
entity_->PopulateCommitProto(&pb_entity);
EXPECT_EQ("", pb_entity.id_string());
EXPECT_EQ(kClientTagHash, pb_entity.client_defined_unique_tag());
EXPECT_EQ(kBaseVersion, pb_entity.version());
EXPECT_EQ(kCtime, ProtoTimeToTime(pb_entity.ctime()));
EXPECT_EQ(kMtime, ProtoTimeToTime(pb_entity.mtime()));
EXPECT_FALSE(pb_entity.deleted());
EXPECT_EQ(specifics.preference().name(),
pb_entity.specifics().preference().name());
EXPECT_EQ(specifics.preference().value(),
pb_entity.specifics().preference().value());
CommitResponseData ack;
ack.response_version = kBaseVersion + 1;
ack.id = kServerId;
entity_->ReceiveCommitResponse(&ack);
EXPECT_EQ(kSequenceNumber, ack.sequence_number);
EXPECT_EQ(kSpecificsHash, ack.specifics_hash);
EXPECT_FALSE(entity_->HasPendingCommit());
EXPECT_EQ(kServerId, entity_->id());
CommitRequestData data2 =
MakeCommitRequestData(kSequenceNumber + 1, ack.response_version);
entity_->RequestCommit(data2);
entity_->PopulateCommitProto(&pb_entity);
EXPECT_EQ(kServerId, pb_entity.id_string());
}
// Start with a server initiated entity. Commit over top of it.
TEST_F(WorkerEntityTrackerTest, RequestCommit) {
entity_->RequestCommit(MakeCommitRequestData(1, 10));
EXPECT_TRUE(entity_->HasPendingCommit());
}
// Start with a server initiated entity. Fail to request a commit because of
// an out of date base version.
TEST_F(WorkerEntityTrackerTest, RequestCommitFailure) {
entity_->ReceiveUpdate(MakeUpdateResponseData(10));
EXPECT_FALSE(entity_->HasPendingCommit());
entity_->RequestCommit(
MakeCommitRequestData(23, 5 /* base_version 5 < 10 */));
EXPECT_FALSE(entity_->HasPendingCommit());
}
// Start with a pending commit. Clobber it with an incoming update.
TEST_F(WorkerEntityTrackerTest, UpdateClobbersCommit) {
CommitRequestData data = MakeCommitRequestData(22, 33);
entity_->RequestCommit(data);
EXPECT_TRUE(entity_->HasPendingCommit());
entity_->ReceiveUpdate(MakeUpdateResponseData(400)); // Version 400 > 33.
EXPECT_FALSE(entity_->HasPendingCommit());
}
// Start with a pending commit. Send it a reflected update that
// will not override the in-progress commit.
TEST_F(WorkerEntityTrackerTest, ReflectedUpdateDoesntClobberCommit) {
CommitRequestData data = MakeCommitRequestData(22, 33);
entity_->RequestCommit(data);
EXPECT_TRUE(entity_->HasPendingCommit());
entity_->ReceiveUpdate(MakeUpdateResponseData(33)); // Version 33 == 33.
EXPECT_TRUE(entity_->HasPendingCommit());
}
// Request two commits, both with the same old version. The second commit should
// have the updated server version.
TEST_F(WorkerEntityTrackerTest, QuickCommits) {
const int64_t kLocalBaseVersion = 10;
const int64_t kCommitResponseVersion = 11;
entity_->RequestCommit(MakeCommitRequestData(1, kLocalBaseVersion));
CommitResponseData ack;
ack.response_version = kCommitResponseVersion;
ack.id = kServerId;
entity_->ReceiveCommitResponse(&ack);
entity_->RequestCommit(MakeCommitRequestData(1, kLocalBaseVersion));
sync_pb::SyncEntity pb_entity;
entity_->PopulateCommitProto(&pb_entity);
EXPECT_EQ(kCommitResponseVersion, pb_entity.version());
}
} // namespace syncer
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