Cleanup: Introduce AsyncFileTestHelper for testing with async file/quota operations

webkit/fileapi/async_file_test_helper.h

Index: webkit/fileapi/async_file_test_helper.h
diff --git a/webkit/fileapi/async_file_test_helper.h b/webkit/fileapi/async_file_test_helper.h
new file mode 100644
index 0000000000000000000000000000000000000000..9955b40e8520529d1d49f18acbd7408c8f6c815b
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+++ b/webkit/fileapi/async_file_test_helper.h
@@ -0,0 +1,90 @@
+// Copyright (c) 2013 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 WEBKIT_FILEAPI_ASYNC_FILE_TEST_HELPER_H_
+#define WEBKIT_FILEAPI_ASYNC_FILE_TEST_HELPER_H_
+
+#include "base/basictypes.h"
+#include "webkit/fileapi/file_system_operation.h"
+#include "webkit/fileapi/file_system_types.h"
+#include "webkit/quota/quota_status_code.h"
+
+namespace quota {
+class QuotaManager;
+}
+
+namespace fileapi {
+
+class FileSystemContext;
+class FileSystemURL;
+
+// A helper class to perform async file operations in a synchronous way.
+class AsyncFileTestHelper {
+ public:
+  typedef FileSystemOperation::FileEntryList FileEntryList;
+
+  static const int64 kDontCheckSize;
+
+  // Performs Copy from |src| to |dest| and returns the status code.
+  static base::PlatformFileError Copy(FileSystemContext* context,
+                                      const FileSystemURL& src,
+                                      const FileSystemURL& dest);
+
+  // Performs Move from |src| to |dest| and returns the status code.
+  static base::PlatformFileError Move(FileSystemContext* context,
+                                      const FileSystemURL& src,
+                                      const FileSystemURL& dest);
+
+  // Removes the given |url|.
+  static base::PlatformFileError Remove(FileSystemContext* context,
+                                        const FileSystemURL& url,
+                                        bool recursive);
+
+  // Performs ReadDirectory on |url|.
+  static base::PlatformFileError ReadDirectory(FileSystemContext* context,
+                                               const FileSystemURL& url,
+                                               FileEntryList* entries);
+
+  // Creates a directory at |url|.
+  static base::PlatformFileError CreateDirectory(FileSystemContext* context,
+                                                 const FileSystemURL& url);
+
+  // Creates a file at |url|.
+  static base::PlatformFileError CreateFile(FileSystemContext* context,
+                                            const FileSystemURL& url);
+
+  // Truncates the file |url| to |size|.
+  static base::PlatformFileError TruncateFile(FileSystemContext* context,
+                                              const FileSystemURL& url,
+                                              size_t size);
+
+  // Retrieves PlatformFileInfo for |url| and populates |file_info|.
+  static base::PlatformFileError GetMetadata(FileSystemContext* context,
+                                             const FileSystemURL& url,
+                                             base::PlatformFileInfo* file_info,
+                                             base::FilePath* platform_path);
+
+  // Returns true if a file exists at |url| with |size|. If |size| is
+  // kDontCheckSize it doesn't check the file size (but just check its
+  // existence).
+  static bool FileExists(FileSystemContext* context,
+                         const FileSystemURL& url,
+                         int64 size);
+
+  // Returns true if a directory exists at |url|.
+  static bool DirectoryExists(FileSystemContext* context,
+                              const FileSystemURL& url);
+
+  // Returns usage and quota. It's valid to pass NULL to |usage| and/or |quota|.
+  static quota::QuotaStatusCode GetUsageAndQuota(
+      quota::QuotaManager* quota_manager,
+      const GURL& origin,
+      FileSystemType type,
+      int64* usage,
+      int64* quota);
+};
+
+}  // namespace fileapi
+
+#endif  // WEBKIT_FILEAPI_ASYNC_FILE_TEST_HELPER_H_