The London Perl and Raku Workshop takes place on 26th Oct 2024. If your company depends on Perl, please consider sponsoring and/or attending.
#!/usr/bin/env perl
use strict;
use warnings;
use Test::More tests => 3;

my @called;

do {
    package Class;
    use Mouse;

    sub BUILD {
        push @called, 'Class::BUILD';
    }

    sub BUILDALL {
        my $self = shift;
        push @called, 'Class::BUILDALL';
        $self->SUPER::BUILDALL(@_);
    }

    package Child;
    use Mouse;
    extends 'Class';

    sub BUILD {
        push @called, 'Child::BUILD';
    }

    sub BUILDALL {
        my $self = shift;
        push @called, 'Child::BUILDALL';
        $self->SUPER::BUILDALL(@_);
    }
};

is_deeply([splice @called], [], "no BUILD calls yet");

my $object = Class->new;

is_deeply([splice @called], ["Class::BUILDALL", "Class::BUILD"]);

my $child = Child->new;

is_deeply([splice @called], ["Child::BUILDALL", "Class::BUILDALL", "Class::BUILD", "Child::BUILD"]);