Test::Base::Filter(3)

NAME
Test::Base::Filter - Default Filter Class for Test::Base

SYNOPSIS
    package MyTestSuite;
    use Test::Base -Base;

    ... reusable testing code ...

    package MyTestSuite::Filter;
    use Test::Base::Filter -Base;

    sub my_filter1 {
        ...
    }

DESCRIPTION
Filters are the key to writing effective data driven tests with Test::Base. Test::Base::Filter is a class containing a large default set of generic filters. You can easily subclass it to add/override functionality.

FILTERS
This is a list of the default stock filters (in alphabetic order):

  append
list => list

Append a string to each element of a list.

    --- numbers lines chomp append=-#\n join
    one
    two
    three

  array
list => scalar

Turn a list of values into an anonymous array reference.

  base64_decode
scalar => scalar

Decode base64 data. Useful for binary tests.

  base64_encode
scalar => scalar

Encode base64 data. Useful for binary tests.

  chomp
list => list

Remove the final newline from each string value in a list.

  chop
list => list

Remove the final char from each string value in a list.

  dumper
scalar => list

Take a data structure (presumably from another filter like eval) and use Data::Dumper to dump it in a canonical fashion.

  escape
scalar => scalar

Unescape all backslash escaped chars.

  eval
scalar => list

Run Perl's "eval" command against the data and use the returned value as the data.

  eval_all
scalar => list

Run Perl's "eval" command against the data and return a list of 4 values:

    1) The return value
    2) The error in $@
    3) Captured STDOUT
    4) Captured STDERR

  eval_stderr
scalar => scalar

Run Perl's "eval" command against the data and return the captured STDERR.

  eval_stdout
scalar => scalar

Run Perl's "eval" command against the data and return the captured STDOUT.

  exec_perl_stdout
list => scalar

Input Perl code is written to a temp file and run. STDOUT is captured and returned.

  flatten
scalar => list

Takes a hash or array ref and flattens it to a list.

  get_url
scalar => scalar

The text is chomped and considered to be a url. Then LWP::Simple::get is used to fetch the contents of the url.

  hash
list => scalar

Turn a list of key/value pairs into an anonymous hash reference.

  head[=number]
list => list

Takes a list and returns a number of the elements from the front of it. The default number is one.

  join
list => scalar

Join a list of strings into a scalar.

  Join
Join the list of strings inside a list of array refs and return the strings in place of the array refs.

  lines
scalar => list

Break the data into an anonymous array of lines. Each line (except possibly the last one if the "chomp" filter came first) will have a newline at the end.

  norm
scalar => scalar

Normalize the data. Change non-Unix line endings to Unix line endings.

  prepend=string
list => list

Prepend a string onto each of a list of strings.

  read_file
scalar => scalar

Read the file named by the current content and return the file's content.

  regexp[=xism]
scalar => scalar

The "regexp" filter will turn your data section into a regular expression object. You can pass in extra flags after an equals sign.

If the text contains more than one line and no flags are specified, then the 'xism' flags are assumed.

  reverse
list => list

Reverse the elements of a list.

  Reverse
list => list

Reverse the list of strings inside a list of array refs.

  slice=x[,y]
list => list

Returns the element number x through element number y of a list.

  sort
list => list

Sorts the elements of a list in character sort order.

  Sort
list => list

Sort the list of strings inside a list of array refs.

  split[=string|pattern]
scalar => list

Split a string in into a list. Takes a optional string or regexp as a parameter. Defaults to /\s+/. Same as Perl "split".

  Split[=string|pattern]
list => list

Split each of a list of strings and turn them into array refs.

  strict
scalar => scalar

Prepend the string:

    use strict;
    use warnings;

to the block's text.

  tail[=number]
list => list

Return a number of elements from the end of a list. The default number is one.

  trim
list => list

Remove extra blank lines from the beginning and end of the data. This allows you to visually separate your test data with blank lines.

  unchomp
list => list

Add a newline to each string value in a list.

  write_file[=filename]
scalar => scalar

Write the content of the section to the named file. Return the filename.

  yaml
scalar => list

Apply the YAML::Load function to the data block and use the resultant structure. Requires YAML.pm.

AUTHOR
Ingy dA~Xt Net <ingy@cpan.org>

COPYRIGHT
Copyright (c) 2006, 2011. Ingy dA~Xt Net. All rights reserved. Copyright (c) 2005. Brian Ingerson. All rights reserved.

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

See http://www.perl.com/perl/misc/Artistic.html