NAME

       Test::HexDifferences - Test binary as hexadecimal string

VERSION

       1.001

SYNOPSIS

           use Test::HexDifferences;

           eq_or_dump_diff(
               $got,
               $expected,
           );

           eq_or_dump_diff(
               $got,
               $expected,
               $test_name,
           );

           eq_or_dump_diff(
               $got,
               $expected,
               {
                   address => $start_address,
                   format  => "%a : %4C : %d\n",
               }
               $test_name,
           );

       If $got or $expected is "undef" or a reference, the hexadecimal formatter is off.  Then
       "eq_or_dump_diff" is a text compare.

           dumped_eq_dump_or_diff(
               $got_value,
               $expected_dump,
           );

           dumped_eq_dump_or_diff(
               $got_value,
               $expected_dump,
               $test_name,
           );

           dumped_eq_dump_or_diff(
               $got_value,
               $expected_dump,
               {
                   address => $start_address,
                   format  => "%a : %4C : %d\n",
               }
               $test_name,
           );

       See Test::HexDifferences::HexDump for the format description.

EXAMPLE

       Inside of this Distribution is a directory named example.  Run this *.t files.

DESCRIPTION

       The are some special cases for testing binary data.

       •   The ascii format is not good for e.g. a length byte 0x41 displayed as A.

       •   Multibyte values are better shown as 1 value.

       •   Structured binary e.g. 2 byte length followed by bytes better are shown as it is.

       •   Compare 2 binary or 1 binary and a dump.

SUBROUTINES/METHODS

   subroutine eq_or_dump_diff
           eq_or_dump_diff(
               $got_value,
               $expected_value,
               {                                      # optional hash reference
                   address => $display_start_address, # optional
                   format  => $format_string,         # optional
               }
               $test_name,                            # optional
           );

   subroutine dumped_eq_dump_or_diff
           dumped_eq_dump_or_diff(
               $got_value,
               $expected_dump,
               {                                      # optional hash reference
                   address => $display_start_address, # optional
                   format  => $format_string,         # optional
               }
               $test_name,                            # optional
           );

DIAGNOSTICS

       nothing

CONFIGURATION AND ENVIRONMENT

       nothing

DEPENDENCIES

       Sub::Exporter

       Test::Builder::Module

       Test::HexDifferences::HexDump

       Text::Diff

INCOMPATIBILITIES

       none

BUGS AND LIMITATIONS

       none

SEE ALSO

       Test::HexDifferences::HexDump

AUTHOR

       Steffen Winkler

LICENSE AND COPYRIGHT

       Copyright (c) 2012 - 2015, Steffen Winkler "<steffenw at cpan.org>".  All rights reserved.

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