Migrates legacy packaged app data when it's upgraded to a platform app

chrome/browser/extensions/app_data_migrator_unittest.cc

Index: chrome/browser/extensions/app_data_migrator_unittest.cc
diff --git a/chrome/browser/extensions/app_data_migrator_unittest.cc b/chrome/browser/extensions/app_data_migrator_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..9528da9cf1d5e4b263f0df286cf14f9202b7577b
--- /dev/null
+++ b/chrome/browser/extensions/app_data_migrator_unittest.cc
@@ -0,0 +1,273 @@
+// Copyright 2015 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/callback_forward.h"
+#include "base/message_loop/message_loop.h"
+#include "base/threading/sequenced_worker_pool.h"
+#include "chrome/browser/extensions/app_data_migrator.h"
+#include "chrome/browser/extensions/extension_special_storage_policy.h"
+#include "chrome/test/base/testing_profile.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/indexed_db_context.h"
+#include "content/public/browser/storage_partition.h"
+#include "content/public/test/mock_blob_url_request_context.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "extensions/browser/extension_registry.h"
+#include "extensions/common/extension.h"
+#include "extensions/common/extension_builder.h"
+#include "extensions/common/manifest.h"
+#include "storage/browser/fileapi/file_system_context.h"
+#include "storage/browser/fileapi/file_system_operation_runner.h"
+#include "storage/browser/fileapi/file_system_url.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+scoped_ptr<TestingProfile> GetTestingProfile() {
+  TestingProfile::Builder profile_builder;
+  return profile_builder.Build();
+}
+}
+
+namespace extensions {
+
+class AppDataMigratorTest : public testing::Test {
+ public:
+  AppDataMigratorTest()
+      : thread_bundle_(content::TestBrowserThreadBundle::IO_MAINLOOP) {}
+
+  void SetUp() override {
+    profile_ = GetTestingProfile();
+    registry_ = ExtensionRegistry::Get(profile_.get());
+    migrator_ = scoped_ptr<AppDataMigrator>(
+        new AppDataMigrator(profile_.get(), registry_));
+
+    default_partition_ =
+        content::BrowserContext::GetDefaultStoragePartition(profile_.get());
+
+    idb_context_ = default_partition_->GetIndexedDBContext();
+    idb_context_->SetTaskRunnerForTesting(
+        base::MessageLoop::current()->message_loop_proxy().get());
+
+    default_fs_context_ = default_partition_->GetFileSystemContext();
+
+    url_request_context_ = scoped_ptr<content::MockBlobURLRequestContext>(
+        new content::MockBlobURLRequestContext(default_fs_context_));
+  }
+
+  void TearDown() override {}
+
+ protected:
+  content::TestBrowserThreadBundle thread_bundle_;
+  scoped_ptr<TestingProfile> profile_;
+  scoped_ptr<AppDataMigrator> migrator_;
+  content::StoragePartition* default_partition_;
+  ExtensionRegistry* registry_;
+  storage::FileSystemContext* default_fs_context_;
+  content::IndexedDBContext* idb_context_;
+  scoped_ptr<content::MockBlobURLRequestContext> url_request_context_;
+};
+
+scoped_refptr<const Extension> GetTestExtension(bool platform_app) {
+  scoped_refptr<const Extension> app;
+  if (platform_app) {
+    app = ExtensionBuilder()
+              .SetManifest(
+                   DictionaryBuilder()
+                       .Set("name", "test app")
+                       .Set("version", "1")
+                       .Set("app", DictionaryBuilder().Set(
+                                       "background",
+                                       DictionaryBuilder().Set(
+                                           "scripts", ListBuilder().Append(
+                                                          "background.js"))))
+                       .Set("permissions",
+                            ListBuilder().Append("unlimitedStorage")))
+              .Build();
+  } else {
+    app = ExtensionBuilder()
+              .SetManifest(DictionaryBuilder()
+                               .Set("name", "test app")
+                               .Set("version", "1")
+                               .Set("app", DictionaryBuilder().Set(
+                                               "launch",
+                                               DictionaryBuilder().Set(
+                                                   "local_path", "index.html")))
+                               .Set("permissions",
+                                    ListBuilder().Append("unlimitedStorage")))
+              .Build();
+  }
+  return app;
+}
+
+void MigrationCallback() {
+}
+
+void DidWrite(base::File::Error status, int64 bytes, bool complete) {
+  base::MessageLoop::current()->Quit();
+}
+
+void DidCreate(base::File::Error status) {
+}
+
+void DidOpenFileSystem(const GURL& root,
+                       const std::string& name,
+                       base::File::Error result) {
+}
+
+void OpenFileSystems(storage::FileSystemContext* fs_context,
+                     GURL extension_url) {
+  fs_context->OpenFileSystem(extension_url, storage::kFileSystemTypeTemporary,
+                             storage::OPEN_FILE_SYSTEM_CREATE_IF_NONEXISTENT,
+                             base::Bind(&DidOpenFileSystem));
+
+  fs_context->OpenFileSystem(extension_url, storage::kFileSystemTypePersistent,
+                             storage::OPEN_FILE_SYSTEM_CREATE_IF_NONEXISTENT,
+                             base::Bind(&DidOpenFileSystem));
+  base::MessageLoop::current()->RunUntilIdle();
+}
+
+void GenerateTestFiles(content::MockBlobURLRequestContext* url_request_context,
+                       const Extension* ext,
+                       storage::FileSystemContext* fs_context,
+                       Profile* profile) {
+  profile->GetExtensionSpecialStoragePolicy()->GrantRightsForExtension(ext,
+                                                                       profile);
+
+  base::FilePath path(FILE_PATH_LITERAL("test.txt"));
+  GURL extension_url =
+      extensions::Extension::GetBaseURLFromExtensionId(ext->id());
+
+  OpenFileSystems(fs_context, extension_url);
+
+  storage::FileSystemURL fs_temp_url = fs_context->CreateCrackedFileSystemURL(
+      extension_url, storage::kFileSystemTypeTemporary, path);
+
+  storage::FileSystemURL fs_persistent_url =
+      fs_context->CreateCrackedFileSystemURL(
+          extension_url, storage::kFileSystemTypePersistent, path);
+
+  content::ScopedTextBlob blob1(*url_request_context, "blob-id:success1",
+                                "Hello, world!\n");
+
+  fs_context->operation_runner()->CreateFile(fs_temp_url, false,
+                                             base::Bind(&DidCreate));
+
+  fs_context->operation_runner()->CreateFile(fs_persistent_url, false,
+                                             base::Bind(&DidCreate));
+  base::MessageLoop::current()->RunUntilIdle();
+
+  fs_context->operation_runner()->Write(url_request_context, fs_temp_url,
+                                        blob1.GetBlobDataHandle(), 0,
+                                        base::Bind(&DidWrite));
+  base::MessageLoop::current()->Run();
+  fs_context->operation_runner()->Write(url_request_context, fs_persistent_url,
+                                        blob1.GetBlobDataHandle(), 0,
+                                        base::Bind(&DidWrite));
+  base::MessageLoop::current()->Run();
+}
+
+void VerifyFileContents(base::File file,
+                        const base::Closure& on_close_callback) {
+  ASSERT_EQ(14, file.GetLength());
+  scoped_ptr<char[]> buffer(new char[15]);
+
+  file.Read(0, buffer.get(), 14);
+  buffer.get()[14] = 0;
+
+  std::string expected = "Hello, world!\n";
+  std::string actual = buffer.get();
+  EXPECT_EQ(expected, actual);
+
+  file.Close();
+  if (!on_close_callback.is_null())
+    on_close_callback.Run();
+  base::MessageLoop::current()->Quit();
+}
+
+void VerifyTestFilesMigrated(content::StoragePartition* new_partition,
+                             const Extension* new_ext) {
+  GURL extension_url =
+      extensions::Extension::GetBaseURLFromExtensionId(new_ext->id());
+  storage::FileSystemContext* new_fs_context =
+      new_partition->GetFileSystemContext();
+
+  OpenFileSystems(new_fs_context, extension_url);
+
+  base::FilePath path(FILE_PATH_LITERAL("test.txt"));
+
+  storage::FileSystemURL fs_temp_url =
+      new_fs_context->CreateCrackedFileSystemURL(
+          extension_url, storage::kFileSystemTypeTemporary, path);
+  storage::FileSystemURL fs_persistent_url =
+      new_fs_context->CreateCrackedFileSystemURL(
+          extension_url, storage::kFileSystemTypePersistent, path);
+
+  new_fs_context->operation_runner()->OpenFile(
+      fs_temp_url, base::File::FLAG_READ | base::File::FLAG_OPEN,
+      base::Bind(&VerifyFileContents));
+  base::MessageLoop::current()->Run();
+  new_fs_context->operation_runner()->OpenFile(
+      fs_persistent_url, base::File::FLAG_READ | base::File::FLAG_OPEN,
+      base::Bind(&VerifyFileContents));
+  base::MessageLoop::current()->Run();
+}
+
+TEST_F(AppDataMigratorTest, ShouldMigrate) {
+  scoped_refptr<const Extension> old_ext = GetTestExtension(false);
+  scoped_refptr<const Extension> new_ext = GetTestExtension(true);
+
+  EXPECT_TRUE(AppDataMigrator::NeedsMigration(old_ext.get(), new_ext.get()));
+}
+
+TEST_F(AppDataMigratorTest, ShouldNotMigratePlatformApp) {
+  scoped_refptr<const Extension> old_ext = GetTestExtension(true);
+  scoped_refptr<const Extension> new_ext = GetTestExtension(true);
+
+  EXPECT_FALSE(AppDataMigrator::NeedsMigration(old_ext.get(), new_ext.get()));
+}
+
+TEST_F(AppDataMigratorTest, ShouldNotMigrateLegacyApp) {
+  scoped_refptr<const Extension> old_ext = GetTestExtension(false);
+  scoped_refptr<const Extension> new_ext = GetTestExtension(false);
+
+  EXPECT_FALSE(AppDataMigrator::NeedsMigration(old_ext.get(), new_ext.get()));
+}
+
+TEST_F(AppDataMigratorTest, NoOpMigration) {
+  scoped_refptr<const Extension> old_ext = GetTestExtension(false);
+  scoped_refptr<const Extension> new_ext = GetTestExtension(true);
+
+  // Nothing to migrate. Basically this should just not cause an error
+  migrator_->DoMigrationAndReply(old_ext.get(), new_ext.get(),
+                                 base::Bind(&MigrationCallback));
+}
+
+TEST_F(AppDataMigratorTest, FileSystemMigration) {
+  scoped_refptr<const Extension> old_ext = GetTestExtension(false);
+  scoped_refptr<const Extension> new_ext = GetTestExtension(true);
+
+  GenerateTestFiles(url_request_context_.get(), old_ext.get(),
+                    default_fs_context_, profile_.get());
+
+  migrator_->DoMigrationAndReply(old_ext.get(), new_ext.get(),
+                                 base::Bind(&MigrationCallback));
+
+  base::MessageLoop::current()->RunUntilIdle();
+
+  registry_->AddEnabled(new_ext);
+  GURL extension_url =
+      extensions::Extension::GetBaseURLFromExtensionId(new_ext->id());
+
+  content::StoragePartition* new_partition =
+      content::BrowserContext::GetStoragePartitionForSite(profile_.get(),
+                                                          extension_url);
+
+  ASSERT_NE(new_partition->GetPath(), default_partition_->GetPath());
+
+  VerifyTestFilesMigrated(new_partition, new_ext.get());
+}
+
+}  // namespace extensions