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# -*- mode: perl; -*-
package Math::BigInt::Lib::TestUtil;
use strict;
use warnings;
use Exporter;
our @ISA = qw< Exporter >;
our @EXPORT_OK = qw< randstr >;
# randstr NUM, BASE
#
# Generate a string representing a NUM digit number in base BASE.
sub randstr {
die "randstr: wrong number of input arguments\n"
unless @_ == 2;
my $n = shift;
my $b = shift;
die "randstr: first input argument must be >= 0"
unless $n >= 0;
die "randstr: second input argument must be in the range 2 .. 36\n"
unless 2 <= $b && $b <= 36;
return '' if $n == 0;
my @dig = (0 .. 9, 'a' .. 'z');
my $str = $dig[ 1 + int rand ($b - 1) ];
$str .= $dig[ int rand $b ] for 2 .. $n;
return $str;
}
1;
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