[fsp] Refactor FakeProvidedFileSystem to be more flexible.

chrome/browser/chromeos/file_system_provider/fake_provided_file_system.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FAKE_PROVIDED_FILE_SYSTEM_H_
 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FAKE_PROVIDED_FILE_SYSTEM_H_
 
 #include <map>
 
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_info.h"
 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_interface.h"
 
 class Profile;
 
+namespace base {
+class Time;
+}  // namespace base
+
 namespace net {
 class IOBuffer;
 }  // namespace net
 
 namespace chromeos {
 namespace file_system_provider {
 
 class RequestManager;
 
-extern const char kFakeFileName[];
+// Path of a sample fake file, which is added to the fake file system by
+// default.
 extern const char kFakeFilePath[];
-extern const char kFakeFileText[];
-extern const size_t kFakeFileSize;
-extern const char kFakeFileModificationTime[];
+
+// Represents a file or a directory on a fake file system.
+struct FakeEntry {
+  FakeEntry() {}
+
+  FakeEntry(EntryMetadata& metadata, const std::string& contents)
+      : metadata(metadata), contents(contents) {}
+
+  virtual ~FakeEntry() {}
+
+  EntryMetadata metadata;
+  std::string contents;
+};
 
 // Fake provided file system implementation. Does not communicate with target
 // extensions. Used for unit tests.
 class FakeProvidedFileSystem : public ProvidedFileSystemInterface {
  public:
   explicit FakeProvidedFileSystem(
       const ProvidedFileSystemInfo& file_system_info);
   virtual ~FakeProvidedFileSystem();
 
+  // Adds a fake entry to the fake file system.
+  void AddEntry(const base::FilePath& entry_path,
+                bool is_directory,
+                const std::string& name,
+                int64 size,
+                base::Time modification_time,
+                std::string mime_type,
+                std::string contents);
+
+  // Fetches a pointer to a fake entry registered in the fake file system. If
+  // found, then the result is written to |fake_entry| and true is returned.
+  // Otherwise, false is returned. |fake_entry| must not be NULL.
+  bool GetEntry(const base::FilePath& entry_path, FakeEntry* fake_entry) const;
+
   // ProvidedFileSystemInterface overrides.
   virtual void RequestUnmount(
       const fileapi::AsyncFileUtil::StatusCallback& callback) OVERRIDE;
   virtual void GetMetadata(
       const base::FilePath& entry_path,
       const ProvidedFileSystemInterface::GetMetadataCallback& callback)
       OVERRIDE;
   virtual void ReadDirectory(
       const base::FilePath& directory_path,
       const fileapi::AsyncFileUtil::ReadDirectoryCallback& callback) OVERRIDE;
@@ skipping 21 matching lines @@
   virtual RequestManager* GetRequestManager() OVERRIDE;
   virtual base::WeakPtr<ProvidedFileSystemInterface> GetWeakPtr() OVERRIDE;
 
   // Factory callback, to be used in Service::SetFileSystemFactory(). The
   // |event_router| argument can be NULL.
   static ProvidedFileSystemInterface* Create(
       Profile* profile,
       const ProvidedFileSystemInfo& file_system_info);
 
  private:
+  typedef std::map<base::FilePath, FakeEntry> Entries;
   typedef std::map<int, base::FilePath> OpenedFilesMap;
 
   ProvidedFileSystemInfo file_system_info_;
+  Entries entries_;
   OpenedFilesMap opened_files_;
   int last_file_handle_;
 
   base::WeakPtrFactory<ProvidedFileSystemInterface> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(FakeProvidedFileSystem);
 };
 
 }  // namespace file_system_provider
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FAKE_PROVIDED_FILE_SYSTEM_H_