use v6.d;
use lib 'lib';
use ORM::ActiveRecord::Model;
use Test;

class Book is Model {
  submethod BUILD {
    self.validate: 'title', { :presence, :if => { self.returns-true } }
    self.validate: 'pages', { :presence, :if => { self.returns-false } }
    self.validate: 'sentences', { :presence, :unless => { self.returns-true } }
    self.validate: 'words', { :presence, :unless => { self.returns-false } }
  }

  method returns-true { True }
  method returns-false { False }
}

plan 5;

%*ENV<DISABLE-SQL-LOG> = True;

my $book = Book.build;
nok $book.is-valid;

ok $book.errors.title[0] eq 'must be present';
nok $book.errors.pages;
nok $book.errors.sentences;
ok $book.errors.words[0] eq 'must be present';

Book.destroy-all;