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 döt Net <ingy@cpan.org>

COPYRIGHT
Copyright 2005-2018. Ingy döt Net. 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>