unpack.t

use v6;
use Test;

# L<S32::Str/Str/"=item pack">

plan 2 * 12;

{
    for "H*", <H*> -> $template {
        my $hexstring = Buf.new(:16<41>, :16<42>, :16<43>).unpack($template);
        is $hexstring, "414243", 'H* works';
    }
}

{
    my $buf =
      "03/23/2001 Totals                      1235.00    1172.98".encode;
    for "A10 x A6 x19 A10 x A*", <A10 x A6 x19 A10 x A*> -> $template {
        my ($date,$totals,$tot_income,$tot_expend) = $buf.unpack($template);

        is $date,       "03/23/2001",  'field 1 (A11) works';
        is $totals,     "Totals",      'field 2 (A28) works';
        is $tot_income, "   1235.00",  'field 3 (A8) works';
        is $tot_expend, "   1172.98",  'field 4 (A*) works';
    }
}

{
    my $buf = Buf.new(0x30, 0x30, 0x00, 0x30, 0x00, 0x00, 0x00,
                      0x12, 0x34, 0x12, 0x34, 0x56, 0x78,
                      0x34, 0x12, 0x78, 0x56, 0x34, 0x12);
    for "C S L n N v V", <C S L n N v V> -> $template {
        my ($char, $short, $long, $bigend_short, $bigend_long,
          $lilend_short, $lilend_long) = $buf.unpack($template);

        is $char,         0x30,       'C works';
        is $short,        0x30,       'S works';
        is $long,         0x30,       'L works';
        is $bigend_short, 0x1234,     'n works';
        is $bigend_long,  0x12345678, 'N works';
        is $lilend_short, 0x1234,     'v works';
        is $lilend_long,  0x12345678, 'V works';
    }
}

# vim: ft=perl6