[Sync] Add tests for invalid specifics field number handling

sync/engine/store_timestamps_command_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 "base/basictypes.h"
+#include "sync/engine/store_timestamps_command.h"
+#include "sync/internal_api/public/base/model_type.h"
+#include "sync/protocol/sync.pb.h"
+#include "sync/test/engine/syncer_command_test.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace syncer {
+
+namespace {
+
+// Adds a progress marker to |response| for the given field number and
+// token.
+void AddProgressMarkerForFieldNumber(
+    sync_pb::GetUpdatesResponse* response,
+    int field_number, const std::string& token) {
+  sync_pb::DataTypeProgressMarker* marker =
+      response->add_new_progress_marker();
+  marker->set_data_type_id(field_number);
+  marker->set_token(token);
+}
+
+// Adds a progress marker to |response| for the given model type and
+// token.
+void AddProgressMarkerForModelType(
+    sync_pb::GetUpdatesResponse* response,
+    ModelType model_type, const std::string& token) {
+  AddProgressMarkerForFieldNumber(
+      response, GetSpecificsFieldNumberFromModelType(model_type), token);
+}
+
+class StoreTimestampsCommandTest : public SyncerCommandTest {
+ protected:
+  // Gets the directory's progress marker's token for the given model
+  // type.
+  std::string GetProgessMarkerToken(ModelType model_type) {
+    sync_pb::DataTypeProgressMarker progress_marker;
+    session()->context()->directory()->GetDownloadProgress(
+        model_type, &progress_marker);
+    EXPECT_EQ(
+        GetSpecificsFieldNumberFromModelType(model_type),
+        progress_marker.data_type_id());
+    return progress_marker.token();
+  }
+};
+
+// Builds a GetUpdatesResponse with some progress markers, including
+// invalid ones.  ProcessNewProgressMarkers() should return the model
+// types for the valid progress markers and fill in the progress
+// markers in the directory.
+TEST_F(StoreTimestampsCommandTest, ProcessNewProgressMarkers) {
+  sync_pb::GetUpdatesResponse response;
+  AddProgressMarkerForModelType(&response, BOOKMARKS, "token1");
+  AddProgressMarkerForModelType(&response,
+                                HISTORY_DELETE_DIRECTIVES, "token2");
+  AddProgressMarkerForFieldNumber(&response, -1, "bad token");
+
+  ModelTypeSet forward_progress_types =
+      ProcessNewProgressMarkers(
+          response, session()->context()->directory());
+
+  EXPECT_TRUE(
+      forward_progress_types.Equals(
+          ModelTypeSet(BOOKMARKS, HISTORY_DELETE_DIRECTIVES)));
+
+  EXPECT_EQ("token1", GetProgessMarkerToken(BOOKMARKS));
+  EXPECT_EQ("token2", GetProgessMarkerToken(HISTORY_DELETE_DIRECTIVES));
+
+  ModelTypeSet non_forward_progress_types =
+      Difference(ModelTypeSet::All(), forward_progress_types);
+  for (ModelTypeSet::Iterator it = non_forward_progress_types.First();
+       it.Good(); it.Inc()) {
+    EXPECT_TRUE(GetProgessMarkerToken(it.Get()).empty());
+  }
+}
+
+}  // namespace
+
+}  // namespace syncer