use Class::DBI::Frozen::301;
#!/usr/bin/perl -w

use strict;
use Test::More tests => 3;

use Class::DBI;

package A;
@A::ISA = qw(Class::DBI);
__PACKAGE__->columns(Primary => 'id');

package A::B;
@A::B::ISA = 'A';
__PACKAGE__->columns(All => qw(id b1));

package A::C;
@A::C::ISA = 'A';
__PACKAGE__->columns(All => qw(id c1 c2 c3));

package main;
is join (' ', sort A->columns),    'id',          "A columns";
is join (' ', sort A::B->columns), 'b1 id',       "A::B columns";
is join (' ', sort A::C->columns), 'c1 c2 c3 id', "A::C columns";