sync: Introduce ModelTypeRegistry and helpers

sync/sessions/model_type_registry_unittest.cc

Index: sync/sessions/model_type_registry_unittest.cc
diff --git a/sync/sessions/model_type_registry_unittest.cc b/sync/sessions/model_type_registry_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ab36e57ebbbb0f5f3f79f91e040c21ecb01fd324
--- /dev/null
+++ b/sync/sessions/model_type_registry_unittest.cc
@@ -0,0 +1,114 @@
+// Copyright (c) 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 <vector>
+
+#include "base/message_loop/message_loop.h"
+#include "sync/internal_api/public/base/model_type.h"
+#include "sync/sessions/model_type_registry.h"
+#include "sync/test/engine/fake_model_worker.h"
+#include "sync/test/engine/test_directory_setter_upper.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace syncer {
+
+class ModelTypeRegistryTest : public ::testing::Test {
+ public:
+  ModelTypeRegistryTest();
+  virtual void SetUp() OVERRIDE;
+  virtual void TearDown() OVERRIDE;
+
+  ModelTypeRegistry* registry();
+
+ private:
+  syncable::Directory* directory();
+
+  base::MessageLoop message_loop_;
+
+  TestDirectorySetterUpper dir_maker_;
+  std::vector<scoped_refptr<ModelSafeWorker> > workers_;
+  scoped_ptr<ModelTypeRegistry> registry_;
+};
+
+ModelTypeRegistryTest::ModelTypeRegistryTest() {}
+
+void ModelTypeRegistryTest::SetUp() {
+  dir_maker_.SetUp();
+  scoped_refptr<ModelSafeWorker> passive_worker(
+      new FakeModelWorker(GROUP_PASSIVE));
+  scoped_refptr<ModelSafeWorker> ui_worker(
+      new FakeModelWorker(GROUP_UI));
+  scoped_refptr<ModelSafeWorker> db_worker(
+      new FakeModelWorker(GROUP_DB));
+  workers_.push_back(passive_worker);
+  workers_.push_back(ui_worker);
+  workers_.push_back(db_worker);
+
+  registry_.reset(new ModelTypeRegistry(workers_, directory()));
+}
+
+void ModelTypeRegistryTest::TearDown() {
+  registry_.reset();
+  workers_.clear();
+  dir_maker_.TearDown();
+}
+
+ModelTypeRegistry* ModelTypeRegistryTest::registry() {
+  return registry_.get();
+}
+
+syncable::Directory* ModelTypeRegistryTest::directory() {
+  return dir_maker_.directory();
+}
+
+// Create some directory update handlers and commit contributors.
+//
+// We don't get to inspect any of the state we're modifying.  This test is
+// useful only for detecting crashes or memory leaks.
+TEST_F(ModelTypeRegistryTest, SetEnabledDirectoryTypes_Once) {
+  ModelSafeRoutingInfo routing_info;
+  routing_info.insert(std::make_pair(NIGORI, GROUP_PASSIVE));
+  routing_info.insert(std::make_pair(BOOKMARKS, GROUP_UI));
+  routing_info.insert(std::make_pair(AUTOFILL, GROUP_DB));
+
+  registry()->SetEnabledDirectoryTypes(routing_info);
+}
+
+// Try two different routing info settings.
+//
+// We don't get to inspect any of the state we're modifying.  This test is
+// useful only for detecting crashes or memory leaks.
+TEST_F(ModelTypeRegistryTest, SetEnabledDirectoryTypes_Repeatedly) {
+  ModelSafeRoutingInfo routing_info1;
+  routing_info1.insert(std::make_pair(NIGORI, GROUP_PASSIVE));
+  routing_info1.insert(std::make_pair(BOOKMARKS, GROUP_PASSIVE));
+  routing_info1.insert(std::make_pair(AUTOFILL, GROUP_PASSIVE));
+
+  registry()->SetEnabledDirectoryTypes(routing_info1);
+
+  ModelSafeRoutingInfo routing_info2;
+  routing_info2.insert(std::make_pair(NIGORI, GROUP_PASSIVE));
+  routing_info2.insert(std::make_pair(BOOKMARKS, GROUP_UI));
+  routing_info2.insert(std::make_pair(AUTOFILL, GROUP_DB));
+
+  registry()->SetEnabledDirectoryTypes(routing_info2);
+}
+
+// Test removing all types from the list.
+//
+// We don't get to inspect any of the state we're modifying.  This test is
+// useful only for detecting crashes or memory leaks.
+TEST_F(ModelTypeRegistryTest, SetEnabledDirectoryTypes_Clear) {
+  ModelSafeRoutingInfo routing_info1;
+  routing_info1.insert(std::make_pair(NIGORI, GROUP_PASSIVE));
+  routing_info1.insert(std::make_pair(BOOKMARKS, GROUP_UI));
+  routing_info1.insert(std::make_pair(AUTOFILL, GROUP_DB));
+
+  registry()->SetEnabledDirectoryTypes(routing_info1);
+
+  ModelSafeRoutingInfo routing_info2;
+  registry()->SetEnabledDirectoryTypes(routing_info2);
+}
+
+}  // namespace syncer