chrome/browser/sync/prefs/chrome_syncable_prefs_database_unittest.cc

// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/sync/prefs/chrome_syncable_prefs_database.h"

#include <string_view>

#include "base/test/metrics/histogram_enum_reader.h"
#include "base/test/scoped_feature_list.h"
#include "components/sync/base/features.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace {

TEST(ChromeSyncablePrefsDatabaseTest, CheckMetricsEnum) {
  std::optional<base::HistogramEnumEntryMap> syncable_pref_enums =
      base::ReadEnumFromEnumsXml("SyncablePref", "sync");

  ASSERT_TRUE(syncable_pref_enums.has_value())
      << "Failed to read SyncablePref enum from "
         "tools/metrics/histograms/metadata/sync/enums.xml.";

  browser_sync::ChromeSyncablePrefsDatabase db;
  std::map<std::string_view, sync_preferences::SyncablePrefMetadata>
      syncable_prefs = db.GetAllSyncablePrefsForTest();
  for (const auto& [pref_name, metadata] : syncable_prefs) {
    EXPECT_TRUE(syncable_pref_enums->contains(metadata.syncable_pref_id()))
        << "Enum entry for preference " << pref_name
        << ", syncable_pref_id=" << metadata.syncable_pref_id()
        << " not found in SyncablePref enum in enums.xml.";
  }
}

TEST(ChromeSyncablePrefsDatabaseTest, IsPreferenceAlwaysSyncing) {
  base::test::ScopedFeatureList scoped_feature_list(
      syncer::kSyncSupportAlwaysSyncingPriorityPreferences);
  browser_sync::ChromeSyncablePrefsDatabase db;
  EXPECT_TRUE(db.IsPreferenceAlwaysSyncing(
      sync_preferences::kSyncableAlwaysSyncingPriorityPrefForTesting));
  EXPECT_FALSE(db.IsPreferenceAlwaysSyncing(
      sync_preferences::kSyncablePriorityPrefForTesting));

  // Currently, only priority preferences are allowed in the allowlist.
  const std::map<std::string_view, sync_preferences::SyncablePrefMetadata>
      syncable_prefs = db.GetAllSyncablePrefsForTest();
  for (const auto& [pref_name, metadata] : syncable_prefs) {
    if (db.IsPreferenceAlwaysSyncing(pref_name)) {
      EXPECT_EQ(metadata.data_type(), syncer::PRIORITY_PREFERENCES);
    }
  }
}

}  // namespace