[fsp] Introduce file_system_provider::Service class for the FileSystemProvider API.

chrome/browser/chromeos/file_system_provider/service_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 <string>
+
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
+#include "chrome/browser/chromeos/file_system_provider/observer.h"
+#include "chrome/browser/chromeos/file_system_provider/provided_file_system.h"
+#include "chrome/browser/chromeos/file_system_provider/service.h"
+#include "chrome/browser/chromeos/login/fake_user_manager.h"
+#include "chrome/test/base/testing_profile.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "webkit/browser/fileapi/external_mount_points.h"
+
+namespace chromeos {
+namespace file_system_provider {
+namespace {
+
+const char kExtensionId[] = "mbflcebpggnecokmikipoihdbecnjfoj";
+const char kFileSystemName[] = "Camera Pictures";
+
+// Utility observer, logging events from file_system_provider::Service.
+class LoggingObserver : public Observer {
+ public:
+  LoggingObserver() {}
+  virtual ~LoggingObserver() {}
+
+  // file_system_provider::Observer overrides.
+  virtual void OnProvidedFileSystemRegistered(
+      const ProvidedFileSystem& file_system) OVERRIDE {
+    registered.push_back(new const ProvidedFileSystem(file_system));
+  }
+
+  virtual void OnProvidedFileSystemUnregistered(
+      const ProvidedFileSystem& file_system) OVERRIDE {
+    unregistered.push_back(new const ProvidedFileSystem(file_system));
+  }
+
+  ScopedVector<const ProvidedFileSystem> registered;
+  ScopedVector<const ProvidedFileSystem> unregistered;
+};
+
+}  // namespace
+
+class FileSystemProviderServiceTest : public testing::Test {
+ protected:
+  FileSystemProviderServiceTest() {}
+  virtual ~FileSystemProviderServiceTest() {}
+
+  virtual void SetUp() OVERRIDE {
+    user_manager_ = new FakeUserManager();
+    user_manager_enabler_.reset(new ScopedUserManagerEnabler(user_manager_));
+    profile_.reset(new TestingProfile);
+    user_manager_->AddUser(profile_->GetProfileName());
+    file_system_provider_service_.reset(new Service(profile_.get()));
+  }
+
+  virtual void TearDown() {
+    fileapi::ExternalMountPoints::GetSystemInstance()->RevokeAllFileSystems();
+  }
+
+  content::TestBrowserThreadBundle thread_bundle_;
+  scoped_ptr<TestingProfile> profile_;
+  scoped_ptr<ScopedUserManagerEnabler> user_manager_enabler_;
+  FakeUserManager* user_manager_;
+  scoped_ptr<Service> file_system_provider_service_;
+};
+
+TEST_F(FileSystemProviderServiceTest, RegisterFileSystem) {
+  LoggingObserver observer;
+  file_system_provider_service_->AddObserver(&observer);
+
+  const std::string file_system_id =
+      file_system_provider_service_->RegisterFileSystem(kExtensionId,
+                                                        kFileSystemName);
+
+  EXPECT_NE("", file_system_id);
+  ASSERT_EQ(1u, observer.registered.size());
+  EXPECT_EQ(kExtensionId, observer.registered[0]->extension_id());
+  EXPECT_EQ("mbflcebpggnecokmikipoihdbecnjfoj-1-testing_profile-hash",
+            observer.registered[0]->file_system_id());
+  EXPECT_EQ("/provided/mbflcebpggnecokmikipoihdbecnjfoj-1-testing_profile-hash",
+            observer.registered[0]->mount_path().AsUTF8Unsafe());
+  EXPECT_EQ(kFileSystemName, observer.registered[0]->file_system_name());
+  ASSERT_EQ(0u, observer.unregistered.size());
+
+  std::vector<ProvidedFileSystem> provided_file_systems =
+      file_system_provider_service_->GetRegisteredFileSystems();
+  ASSERT_EQ(1u, provided_file_systems.size());
+
+  file_system_provider_service_->RemoveObserver(&observer);
+}
+
+TEST_F(FileSystemProviderServiceTest, RegisterFileSystem_UniqueIds) {
+  LoggingObserver observer;
+  file_system_provider_service_->AddObserver(&observer);
+
+  std::string file_system_first_id =
+      file_system_provider_service_->RegisterFileSystem(kExtensionId,
+                                                        kFileSystemName);
+  ASSERT_NE("", file_system_first_id);
+
+  std::string file_system_second_id =
+      file_system_provider_service_->RegisterFileSystem(kExtensionId,
+                                                        kFileSystemName);
+  ASSERT_NE("", file_system_second_id);
+
+  ASSERT_NE(file_system_first_id, file_system_second_id);
+  ASSERT_EQ(2u, observer.registered.size());
+
+  std::vector<ProvidedFileSystem> provided_file_systems =
+      file_system_provider_service_->GetRegisteredFileSystems();
+  ASSERT_EQ(2u, provided_file_systems.size());
+
+  file_system_provider_service_->RemoveObserver(&observer);
+}
+
+TEST_F(FileSystemProviderServiceTest, RegisterFileSystem_StressTest) {
+  LoggingObserver observer;
+  file_system_provider_service_->AddObserver(&observer);
+
+  const size_t kMaxFileSystems = 16;
+  for (size_t i = 0; i < kMaxFileSystems; ++i) {
+    std::string file_system_id =
+        file_system_provider_service_->RegisterFileSystem(kExtensionId,
+                                                          kFileSystemName);
+    ASSERT_NE("", file_system_id);
+  }
+  ASSERT_EQ(kMaxFileSystems, observer.registered.size());
+
+  // The next file system is out of limit, and registering it should fail.
+  std::string file_system_id =
+      file_system_provider_service_->RegisterFileSystem(kExtensionId,
+                                                        kFileSystemName);
+  ASSERT_EQ("", file_system_id);
+  ASSERT_EQ(kMaxFileSystems, observer.registered.size());
+
+  std::vector<ProvidedFileSystem> provided_file_systems =
+      file_system_provider_service_->GetRegisteredFileSystems();
+  ASSERT_EQ(kMaxFileSystems, provided_file_systems.size());
+
+  file_system_provider_service_->RemoveObserver(&observer);
+}
+
+TEST_F(FileSystemProviderServiceTest, UnregisterFileSystem) {
+  LoggingObserver observer;
+  file_system_provider_service_->AddObserver(&observer);
+
+  const std::string file_system_id =
+      file_system_provider_service_->RegisterFileSystem(kExtensionId,
+                                                        kFileSystemName);
+  ASSERT_NE("", file_system_id);
+  ASSERT_EQ(1u, observer.registered.size());
+
+  const bool result = file_system_provider_service_->UnregisterFileSystem(
+      kExtensionId, file_system_id);
+  ASSERT_TRUE(result);
+  ASSERT_EQ(1u, observer.unregistered.size());
+
+  EXPECT_EQ(kExtensionId, observer.unregistered[0]->extension_id());
+  EXPECT_EQ("mbflcebpggnecokmikipoihdbecnjfoj-1-testing_profile-hash",
+            observer.unregistered[0]->file_system_id());
+  EXPECT_EQ("/provided/mbflcebpggnecokmikipoihdbecnjfoj-1-testing_profile-hash",
+            observer.unregistered[0]->mount_path().AsUTF8Unsafe());
+  EXPECT_EQ(kFileSystemName, observer.unregistered[0]->file_system_name());
+
+  std::vector<ProvidedFileSystem> provided_file_systems =
+      file_system_provider_service_->GetRegisteredFileSystems();
+  ASSERT_EQ(0u, provided_file_systems.size());
+
+  file_system_provider_service_->RemoveObserver(&observer);
+}
+
+TEST_F(FileSystemProviderServiceTest, UnregisterFileSystem_WrongExtensionId) {
+  LoggingObserver observer;
+  file_system_provider_service_->AddObserver(&observer);
+
+  const std::string kWrongExtensionId = "helloworldhelloworldhelloworldhe";
+
+  const std::string file_system_id =
+      file_system_provider_service_->RegisterFileSystem(kExtensionId,
+                                                        kFileSystemName);
+  ASSERT_NE("", file_system_id);
+  ASSERT_EQ(1u, observer.registered.size());
+
+  const bool result = file_system_provider_service_->UnregisterFileSystem(
+      kWrongExtensionId, file_system_id);
+  ASSERT_FALSE(result);
+  ASSERT_EQ(0u, observer.unregistered.size());
+
+  std::vector<ProvidedFileSystem> provided_file_systems =
+      file_system_provider_service_->GetRegisteredFileSystems();
+  ASSERT_EQ(1u, provided_file_systems.size());
+
+  file_system_provider_service_->RemoveObserver(&observer);
+}
+
+}  // namespace file_system_provider
+}  // namespace chromeos