[fsp] Add support for opening files.

chrome/browser/chromeos/file_system_provider/operations/open_file_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 <vector>
+
+#include "base/files/file.h"
+#include "base/files/file_path.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
+#include "chrome/browser/chromeos/file_system_provider/operations/open_file.h"
+#include "chrome/browser/chromeos/file_system_provider/provided_file_system_interface.h"
+#include "chrome/common/extensions/api/file_system_provider.h"
+#include "chrome/common/extensions/api/file_system_provider_internal.h"
+#include "extensions/browser/event_router.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "webkit/browser/fileapi/async_file_util.h"
+
+namespace chromeos {
+namespace file_system_provider {
+namespace operations {
+namespace {
+
+const char kExtensionId[] = "mbflcebpggnecokmikipoihdbecnjfoj";
+const int kFileSystemId = 1;
+const int kRequestId = 2;
+const base::FilePath::CharType kFilePath[] = "/directory/blueberries.txt";
+
+// Fake event dispatcher implementation with extra logging capability. Acts as
+// a providing extension end-point.
+class LoggingDispatchEventImpl {
+ public:
+  explicit LoggingDispatchEventImpl(bool dispatch_reply)
+      : dispatch_reply_(dispatch_reply) {}
+  virtual ~LoggingDispatchEventImpl() {}
+
+  bool OnDispatchEventImpl(scoped_ptr<extensions::Event> event) {
+    events_.push_back(event->DeepCopy());
+    return dispatch_reply_;
+  }
+
+  ScopedVector<extensions::Event>& events() { return events_; }
+
+ private:
+  ScopedVector<extensions::Event> events_;
+  bool dispatch_reply_;
+
+  DISALLOW_COPY_AND_ASSIGN(LoggingDispatchEventImpl);
+};
+
+// Callback invocation logger. Acts as a fileapi end-point.
+class CallbackLogger {
+ public:
+  CallbackLogger() : weak_ptr_factory_(this) {}
+  virtual ~CallbackLogger() {}
+
+  void OnOpenFile(base::File::Error result) { events_.push_back(result); }
+
+  std::vector<base::File::Error>& events() { return events_; }
+
+  base::WeakPtr<CallbackLogger> GetWeakPtr() {
+    return weak_ptr_factory_.GetWeakPtr();
+  }
+
+ private:
+  std::vector<base::File::Error> events_;
+  base::WeakPtrFactory<CallbackLogger> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(CallbackLogger);
+};
+
+}  // namespace
+
+class FileSystemProviderOperationsOpenFileTest : public testing::Test {
+ protected:
+  FileSystemProviderOperationsOpenFileTest() {}
+  virtual ~FileSystemProviderOperationsOpenFileTest() {}
+
+  virtual void SetUp() OVERRIDE {
+    file_system_info_ =
+        ProvidedFileSystemInfo(kExtensionId,
+                               kFileSystemId,
+                               "" /* file_system_name */,
+                               base::FilePath() /* mount_path */);
+  }
+
+  ProvidedFileSystemInfo file_system_info_;
+};
+
+TEST_F(FileSystemProviderOperationsOpenFileTest, Execute) {
+  LoggingDispatchEventImpl dispatcher(true /* dispatch_reply */);
+  CallbackLogger callback_logger;
+
+  OpenFile open_file(
+      NULL,
+      file_system_info_,
+      base::FilePath::FromUTF8Unsafe(kFilePath),
+      ProvidedFileSystemInterface::OPEN_FILE_MODE_READ,
+      false /* create */,
+      base::Bind(&CallbackLogger::OnOpenFile, callback_logger.GetWeakPtr()));
+  open_file.SetDispatchEventImplForTesting(
+      base::Bind(&LoggingDispatchEventImpl::OnDispatchEventImpl,
+                 base::Unretained(&dispatcher)));
+
+  EXPECT_TRUE(open_file.Execute(kRequestId));
+
+  ASSERT_EQ(1u, dispatcher.events().size());
+  extensions::Event* event = dispatcher.events()[0];
+  EXPECT_EQ(
+      extensions::api::file_system_provider::OnOpenFileRequested::kEventName,
+      event->event_name);
+  base::ListValue* event_args = event->event_args.get();
+  ASSERT_EQ(5u, event_args->GetSize());
+
+  int event_file_system_id = -1;
+  EXPECT_TRUE(event_args->GetInteger(0, &event_file_system_id));
+  EXPECT_EQ(kFileSystemId, event_file_system_id);
+
+  int event_request_id = -1;
+  EXPECT_TRUE(event_args->GetInteger(1, &event_request_id));
+  EXPECT_EQ(kRequestId, event_request_id);
+
+  std::string event_file_path;
+  EXPECT_TRUE(event_args->GetString(2, &event_file_path));
+  EXPECT_EQ(kFilePath, event_file_path);
+
+  std::string event_file_open_mode;
+  EXPECT_TRUE(event_args->GetString(3, &event_file_open_mode));
+  const std::string expected_file_open_mode =
+      extensions::api::file_system_provider::ToString(
+          extensions::api::file_system_provider::OPEN_FILE_MODE_READ);
+  EXPECT_EQ(expected_file_open_mode, event_file_open_mode);
+
+  bool event_create;
+  EXPECT_TRUE(event_args->GetBoolean(4, &event_create));
+  EXPECT_FALSE(event_create);
+}
+
+TEST_F(FileSystemProviderOperationsOpenFileTest, Execute_NoListener) {
+  LoggingDispatchEventImpl dispatcher(false /* dispatch_reply */);
+  CallbackLogger callback_logger;
+
+  OpenFile open_file(
+      NULL,
+      file_system_info_,
+      base::FilePath::FromUTF8Unsafe(kFilePath),
+      ProvidedFileSystemInterface::OPEN_FILE_MODE_READ,
+      false /* create */,
+      base::Bind(&CallbackLogger::OnOpenFile, callback_logger.GetWeakPtr()));
+  open_file.SetDispatchEventImplForTesting(
+      base::Bind(&LoggingDispatchEventImpl::OnDispatchEventImpl,
+                 base::Unretained(&dispatcher)));
+
+  EXPECT_FALSE(open_file.Execute(kRequestId));
+}
+
+TEST_F(FileSystemProviderOperationsOpenFileTest, OnSuccess) {
+  using extensions::api::file_system_provider::EntryMetadata;
+  using extensions::api::file_system_provider_internal::
+      OpenFileRequestedSuccess::Params;
+
+  LoggingDispatchEventImpl dispatcher(true /* dispatch_reply */);
+  CallbackLogger callback_logger;
+
+  OpenFile open_file(
+      NULL,
+      file_system_info_,
+      base::FilePath::FromUTF8Unsafe(kFilePath),
+      ProvidedFileSystemInterface::OPEN_FILE_MODE_READ,
+      false /* create */,
+      base::Bind(&CallbackLogger::OnOpenFile, callback_logger.GetWeakPtr()));
+  open_file.SetDispatchEventImplForTesting(
+      base::Bind(&LoggingDispatchEventImpl::OnDispatchEventImpl,
+                 base::Unretained(&dispatcher)));
+
+  EXPECT_TRUE(open_file.Execute(kRequestId));
+
+  open_file.OnSuccess(kRequestId,
+                      scoped_ptr<RequestValue>(new RequestValue()),
+                      false /* has_next */);
+  ASSERT_EQ(1u, callback_logger.events().size());
+  EXPECT_EQ(base::File::FILE_OK, callback_logger.events()[0]);
+}
+
+TEST_F(FileSystemProviderOperationsOpenFileTest, OnError) {
+  using extensions::api::file_system_provider::EntryMetadata;
+  using extensions::api::file_system_provider_internal::OpenFileRequestedError::
+      Params;
+
+  LoggingDispatchEventImpl dispatcher(true /* dispatch_reply */);
+  CallbackLogger callback_logger;
+
+  OpenFile open_file(
+      NULL,
+      file_system_info_,
+      base::FilePath::FromUTF8Unsafe(kFilePath),
+      ProvidedFileSystemInterface::OPEN_FILE_MODE_READ,
+      false /* create */,
+      base::Bind(&CallbackLogger::OnOpenFile, callback_logger.GetWeakPtr()));
+  open_file.SetDispatchEventImplForTesting(
+      base::Bind(&LoggingDispatchEventImpl::OnDispatchEventImpl,
+                 base::Unretained(&dispatcher)));
+
+  EXPECT_TRUE(open_file.Execute(kRequestId));
+
+  open_file.OnError(kRequestId, base::File::FILE_ERROR_TOO_MANY_OPENED);
+  ASSERT_EQ(1u, callback_logger.events().size());
+  EXPECT_EQ(base::File::FILE_ERROR_TOO_MANY_OPENED,
+            callback_logger.events()[0]);
+}
+
+}  // namespace operations
+}  // namespace file_system_provider
+}  // namespace chromeos