Add some unit tests for SyncData.

sync/api/sync_data_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 "sync/api/sync_data.h"
+
+#include <string>
+
+#include "base/time/time.h"
+#include "sync/protocol/sync.pb.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using std::string;
+
+namespace syncer {
+
+namespace {
+
+const string kSyncTag = "3984729834";
+const ModelType kDatatype = syncer::PREFERENCES;
+const string kNonUniqueTitle = "my preference";
+const int64 kId = 439829;
+const base::Time kLastModifiedTime = base::Time();
+
+typedef testing::Test SyncDataTest;
+
+TEST_F(SyncDataTest, NoArgCtor) {
+  SyncData data;
+  EXPECT_FALSE(data.IsValid());
+}
+
+TEST_F(SyncDataTest, CreateLocalDelete) {
+  SyncData data = SyncData::CreateLocalDelete(kSyncTag, kDatatype);
+  EXPECT_TRUE(data.IsValid());
+  EXPECT_TRUE(data.IsLocal());
+  EXPECT_EQ(kSyncTag, data.GetTag());
+  EXPECT_EQ(kDatatype, data.GetDataType());
+}
+
+TEST_F(SyncDataTest, CreateLocalData) {
+  sync_pb::EntitySpecifics specifics;
+  specifics.mutable_preference();
+  SyncData data =
+      SyncData::CreateLocalData(kSyncTag, kNonUniqueTitle, specifics);
+  EXPECT_TRUE(data.IsValid());
+  EXPECT_TRUE(data.IsLocal());
+  EXPECT_EQ(kSyncTag, data.GetTag());
+  EXPECT_EQ(kDatatype, data.GetDataType());
+  EXPECT_EQ(kNonUniqueTitle, data.GetTitle());
+  EXPECT_TRUE(data.GetSpecifics().has_preference());
+}
+
+TEST_F(SyncDataTest, CreateRemoteData) {
+  sync_pb::EntitySpecifics specifics;
+  specifics.mutable_preference();
+  SyncData data = SyncData::CreateRemoteData(kId, specifics, kLastModifiedTime);
+  EXPECT_TRUE(data.IsValid());
+  EXPECT_FALSE(data.IsLocal());
+  EXPECT_EQ(kId, data.GetRemoteId());
+  EXPECT_EQ(kLastModifiedTime, data.GetRemoteModifiedTime());
+  EXPECT_TRUE(data.GetSpecifics().has_preference());
+}
+
+}  // namespace
+
+}  // namespace syncer