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#!/usr/bin/env perl
use strict;
use warnings;
use Test::More;
use Test::Fatal;
use B;
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");
}
{
# i feel dirty
my $c = eval_closure(source => 'sub { }');
my $b = B::svref_2object($c);
my @scopes;
while ($b->isa('B::CV')) {
push @scopes, $b;
$b = $b->OUTSIDE;
}
my @visible_in_outer_scope
= grep { defined && length && $_ ne '&' }
map { $_->PV }
grep { $_->can('PV') }
map { $_->PADLIST->ARRAYelt(0)->ARRAY }
@scopes;
# test to ensure we don't inadvertently screw up this test by rearranging
# code. if the scope that encloses the eval ends up not declaring $e, then
# change this test.
ok(scalar(grep { $_ eq '$e' } @visible_in_outer_scope),
"visible list is sane");
for my $outer_scope_pad_entry (@visible_in_outer_scope) {
like(
exception {
eval_closure(
source => "sub { $outer_scope_pad_entry }",
);
},
qr/Global symbol "\Q$outer_scope_pad_entry/,
"we don't close over $outer_scope_pad_entry"
);
}
}
done_testing;