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#!/usr/bin/env perl
use strict;
use warnings;
use Test::More;
use Test::Exception;
use Eval::Closure;
use Test::Requires 'PadWalker';
{
my $foo = [];
my $env = { '$foo' => \$foo };
my $code = eval_closure(
source => 'sub { push @$foo, @_ }',
environment => $env,
);
is_deeply(scalar(PadWalker::closed_over($code)), $env,
"closed over the right things");
}
{
my $foo = {};
my $bar = [];
my $env = { '$foo' => \$bar, '$bar' => \$foo };
my $code = eval_closure(
source => 'sub { push @$foo, @_; $bar->{foo} = \@_ }',
environment => $env,
);
is_deeply(scalar(PadWalker::closed_over($code)), $env,
"closed over the right things");
}
{
my $foo = [];
my $env = { '$foo' => \$foo };
throws_ok {
my $code = eval_closure(
source => 'sub { push @$foo, @_; return $__captures }',
environment => $env,
);
} qr/Global symbol "\$__captures/, "we don't close over \$__captures";
}
# it'd be nice if we could test that closing over other things wasn't possible,
# but perl's optimizer gets in the way of that
done_testing;
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