Test::Inline::IO::File - Test::Inline Local Filesystem IO Handler


version 2.214


Test::Inline::IO::File is the default IO handler for Test::Inline.

Test::Inline 2.0 was conceived in an enterprise setting, and retains the flexibilty, power, and bulk that this created, although for most users the power and complexity that is available is largely hidden away under multiple layers of sensible defaults.

The intent with the InputHandler and OutputHandle parameters is to allow Test::Inline to be able to pull source data from anywhere, and write the resulting test scripts to anywhere.

Until a more powerful pure-OO file-system API comes along, this module serves as a minimalist implementation of the subset of functionality that Test::Inline needs in order to work.

An alternative IO Handler class need not subclass this one (although it is recommended), merely implement the same interface, taking whatever alternative arguments to the new constructor that it wishes.

All methods in this class are provided with unix-style paths, and should do the translating to the underlying filesystem themselves if required.



  # Simplified usage
  $io_handler = Test::Inline::IO::File->new( $path );
  # Full key/value usage
  $io_handler = Test::Inline::IO::File->new(
          path     => $path,
          readonly => 1,

The new constructor takes a root path on the local filesystem and returns a new Test::Inline::IO::File object to that location.

exists_file $file

The exists_file method checks to see if a particular file currently exists in the input handler.

Returns true if it exists, or false if not.

exists_dir $dir

The exists_dir method checks to see if a particular directory currently exists in the input handler.

Returns true if it exists, or false if not.

read $file

The read method reads in the entire contents of a single file, returning it as a reference to a SCALAR. It also localises the newlines as it does this, so files from different operating systems should read as you expect.

Returns a SCALAR reference, or undef on error.

write $file, $content

The write method writes a string to a file in one hit, creating it and it's path if needed.

class_file $class

Assuming your input FileHandler is pointing at the root directory of a lib path (meaning that My::Module will be located at My/ within it) the class_file method will take a class name, and check to see if the file for that class exists in the FileHandler.

Returns a reference to an ARRAY containing the filename if it exists, or undef on error.

find $class

The find method takes as argument a directory root class, and then scans within the input FileHandler to find all files contained in that class or any other classes under it's namespace.

Returns a reference to an ARRAY containing all the files within the class, or undef on error.


- Convert to using FSI::FileSystem objects, once they exist


See the main SUPPORT section.

Bugs may be submitted through the RT bug tracker (or


Adam Kennedy <>


This software is copyright (c) 2003 by Adam Kennedy.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.