--- /dev/null
+use strictures 1;
+use Test::More;
+
+{
+ package Tower1;
+
+ use Mouse;
+
+ has 'attr1' => (is => 'ro', required => 1);
+
+ package Tower2;
+
+ use Moo;
+
+ extends 'Tower1';
+
+ has 'attr2' => (is => 'ro', required => 1);
+
+ package Tower3;
+
+ use Moose;
+
+ extends 'Tower2';
+
+ has 'attr3' => (is => 'ro', required => 1);
+
+ __PACKAGE__->meta->make_immutable;
+}
+
+foreach my $num (1..3) {
+ my $class = "Tower${num}";
+ my @attrs = map "attr$_", 1..$num;
+ my %args = map +($_ => "${_}_value"), @attrs;
+ my $obj = $class->new(%args);
+ is($obj->{$_}, "${_}_value", "Attribute $_ ok for $class") for @attrs;
+}
+
+done_testing;