# Package org.apache.lucene.mockfile

Support for testing/debugging with virtual filesystems

See: Description

- Class Summary
  Class | Description
  --- | ---
  DisableFsyncFS | Disables actual calls to fsync.
  ExtrasFS | Adds extra files/subdirectories when directories are created.
  FilterAsynchronousFileChannel | A `FilterAsynchronousFileChannel` contains another `AsynchronousFileChannel`, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
  FilterDirectoryStream | A `FilterDirectoryStream` contains another `DirectoryStream`, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
  FilterFileChannel | A `FilterFileChannel` contains another `FileChannel`, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
  FilterFileStore | A `FilterFileStore` contains another `FileStore`, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
  FilterFileSystem | A `FilterFileSystem` contains another `FileSystem`, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
  FilterFileSystemProvider | A `FilterFileSystemProvider` contains another `FileSystemProvider`, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
  FilterInputStream2 | A `FilterInputStream2` contains another `InputStream`, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
  FilterOutputStream2 | A `FilterOutputStream2` contains another `OutputStream`, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
  FilterPath | A `FilterPath` contains another `Path`, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
  FilterSeekableByteChannel | A `FilterSeekableByteChannel` contains another `SeekableByteChannel`, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.
  HandleLimitFS | FileSystem that throws exception if file handles in use exceeds a specified limit
  HandleTrackingFS | Base class for tracking file handles.
  LeakFS | FileSystem that tracks open handles.
  MockFileSystemTestCase | Base class for testing mockfilesystems.
  ShuffleFS | Gives an unpredictable, but deterministic order to directory listings.
  VerboseFS | FileSystem that records all major destructive filesystem activities.
  VirusCheckingFS | Acts like a virus checker on Windows, where random programs may open the files you just wrote in an unfriendly way preventing deletion (e.g.
  WindowsFS | FileSystem that (imperfectly) acts like windows.

## Package org.apache.lucene.mockfile Description

Support for testing/debugging with virtual filesystems

The primary classes are:

- `LeakFS`: Fails tests if they leave open filehandles.
- `VerboseFS`: Prints destructive filesystem operations to infostream.
- `WindowsFS`: Acts like windows.
- `DisableFsyncFS`: Makes actual fsync calls a no-op.
- `ExtrasFS`: Adds 'bonus' files to directories.
- `ShuffleFS`: Directory listings in an unpredictable but deterministic order.

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