#!perl -T
use strict;
use warnings;
use Test::More 'no_plan';
use Scalar::Vec::Util qw<veq SVU_SIZE>;
for ([ 1, 'offset', -1 ], [ 3, 'offset', '-1' ], [ 4, 'length', -1 ]) {
my @args = ('1') x 5;
$args[$_->[0]] = $_->[2];
local $@;
eval { &veq(@args) };
my $err = $@;
my $line = __LINE__-2;
like $err, qr/^Invalid\s+negative\s+$_->[1]\s+at\s+\Q$0\E\s+line\s+$line/,
"veq(@args) failed";
}
my $p = SVU_SIZE;
$p = 8 if $p < 8;
my $n = 3 * $p;
my $q = 1;
sub myfill {
my (undef, $s, $l, $x) = @_;
$x = 1 if $x;
vec($_[0], $_, 1) = $x for $s .. $s + $l - 1;
}
sub rst {
myfill $_[0], 0, $n, 0;
}
sub pat {
my (undef, $a, $b, $x, $y) = @_;
myfill $_[0], 0, $a, $x;
myfill $_[0], $a, $b, 1 - $x;
myfill $_[0], $a + $b, $n - ($a + $b), $x if $y;
}
my $z = '';
my @s = ($p - $q) .. ($p + $q);
for my $s1 (@s) {
for my $s2 (@s) {
for my $l (0 .. $n) {
next if $s1 + $l > $n or $s2 + $l > $n;
my $v1 = '';
my $v2 = '';
pat $v1, $s1, $l, 0, 0;
pat $v2, $s2, $l, 0, 1;
if ($l > 0) {
my $desc = "not veq 0, 0, $n";
ok !veq($v1 => 0, $z => 0, $n), "$desc [1<=>0,$l]";
ok !veq($z => 0, $v1 => 0, $n), "$desc [0<=>1,$l]";
}
for my $r ($l, $l + $n + 1) {
my $desc = "veq $s1, $s2, $r";
ok veq($v1 => $s1, $v2 => $s2, $r), "$desc [1<=>2,$l]";
ok veq($v2 => $s2, $v1 => $s1, $r), "$desc [2<=>1,$l]";
if ($l > 0) { # Implies $r > 0
if ($s1 > 0) {
my $desc = 'not veq ' . ($s1 - 1). ", $s2, $r";
ok !veq($v1 => $s1-1, $v2 => $s2, $r), "$desc [1-1<=>2,$l]";
ok !veq($v2 => $s2, $v1 => $s1-1, $r), "$desc [2<=>1-1,$l]";
}
{
my $desc = 'not veq ' . ($s1 + 1). ", $s2, $r";
ok !veq($v1 => $s1+1, $v2 => $s2, $r), "$desc [1+1<=>2,$l]";
ok !veq($v2 => $s2, $v1 => $s1+1, $r), "$desc [2<=>1+1,$l]";
}
}
}
}
}
}