sync: Finish the SyncScheduler refactor

sync/sessions/nudge_tracker_unittest.cc

+// Copyright (c) 2012 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/sessions/nudge_tracker.h"
+
+#include "sync/internal_api/public/base/model_type_invalidation_map.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace syncer {
+
+namespace {
+
+ModelTypeSet ParamsMeaningAllEnabledTypes() {
+  ModelTypeSet request_params(BOOKMARKS, AUTOFILL);
+  return request_params;
+}
+
+ModelTypeSet ParamsMeaningJustOneEnabledType() {
+  return ModelTypeSet(AUTOFILL);
+}
+
+}  // namespace
+
+namespace sessions {
+
+TEST(NudgeTrackerTest, CoalesceSources) {
+  ModelTypeInvalidationMap one_type =
+      ModelTypeSetToInvalidationMap(
+          ParamsMeaningJustOneEnabledType(),
+          std::string());
+  ModelTypeInvalidationMap all_types =
+      ModelTypeSetToInvalidationMap(
+          ParamsMeaningAllEnabledTypes(),
+          std::string());
+  sessions::SyncSourceInfo source_one(
+      sync_pb::GetUpdatesCallerInfo::NOTIFICATION, one_type);
+  sessions::SyncSourceInfo source_two(
+      sync_pb::GetUpdatesCallerInfo::LOCAL, all_types);
+
+  NudgeTracker tracker;
+  EXPECT_TRUE(tracker.IsEmpty());
+
+  tracker.CoalesceSources(source_one);
+  EXPECT_EQ(source_one.updates_source, tracker.source_info().updates_source);
+
+  tracker.CoalesceSources(source_two);
+  EXPECT_EQ(source_two.updates_source, tracker.source_info().updates_source);
+}
+
+TEST(NudgeTrackerTest, LocallyModifiedTypes_WithInvalidationFirst) {
+  ModelTypeInvalidationMap one_type =
+      ModelTypeSetToInvalidationMap(
+          ParamsMeaningJustOneEnabledType(),
+          std::string());
+  ModelTypeInvalidationMap all_types =
+      ModelTypeSetToInvalidationMap(
+          ParamsMeaningAllEnabledTypes(),
+          std::string());
+  sessions::SyncSourceInfo source_one(
+      sync_pb::GetUpdatesCallerInfo::NOTIFICATION, all_types);
+  sessions::SyncSourceInfo source_two(
+      sync_pb::GetUpdatesCallerInfo::LOCAL, one_type);
+
+  NudgeTracker tracker;
+  EXPECT_TRUE(tracker.IsEmpty());
+  EXPECT_TRUE(tracker.GetLocallyModifiedTypes().Empty());
+
+  tracker.CoalesceSources(source_one);
+  EXPECT_TRUE(tracker.GetLocallyModifiedTypes().Empty());
+
+  tracker.CoalesceSources(source_two);
+  // TODO: This result is wrong, but that's how the code has always been.  A
+  // local invalidation for a single type should mean that we have only one
+  // locally modified source.  It should not "inherit" the list of data types
+  // from the previous source.
+  EXPECT_TRUE(tracker.GetLocallyModifiedTypes().Equals(
+          ParamsMeaningAllEnabledTypes()));
+}
+
+TEST(NudgeTrackerTest, LocallyModifiedTypes_WithInvalidationSecond) {
+  ModelTypeInvalidationMap one_type =
+      ModelTypeSetToInvalidationMap(
+          ParamsMeaningJustOneEnabledType(),
+          std::string());
+  ModelTypeInvalidationMap all_types =
+      ModelTypeSetToInvalidationMap(
+          ParamsMeaningAllEnabledTypes(),
+          std::string());
+  sessions::SyncSourceInfo source_one(
+      sync_pb::GetUpdatesCallerInfo::LOCAL, one_type);
+  sessions::SyncSourceInfo source_two(
+      sync_pb::GetUpdatesCallerInfo::NOTIFICATION, all_types);
+
+  NudgeTracker tracker;
+  EXPECT_TRUE(tracker.IsEmpty());
+  EXPECT_TRUE(tracker.GetLocallyModifiedTypes().Empty());
+
+  tracker.CoalesceSources(source_one);
+  EXPECT_TRUE(tracker.GetLocallyModifiedTypes().Equals(
+          ParamsMeaningJustOneEnabledType()));
+
+  tracker.CoalesceSources(source_two);
+
+  // TODO: This result is wrong, but that's how the code has always been.
+  // The receipt of an invalidation should have no effect on the set of
+  // locally modified types.
+  EXPECT_TRUE(tracker.GetLocallyModifiedTypes().Empty());
+}
+
+}  // namespace sessions
+}  // namespace syncer