use Test2::V0;
use Astro::Constants qw( HUBBLE_TIME );
#use Astro::Constants qw( :deprecated );
#imported_ok('HUBBLE_TIME');
#not_imported_ok('HUBBLE_TIME2');
ok warns { HUBBLE_TIME }, 'Deprecated constant emits a warning';
like(
    warning { HUBBLE_TIME },
    qr/^HUBBLE_TIME deprecated at/,
    'Got expected warning'
);
done_testing();