Lotus::Validations custom coercion problem

test.rb

require 'rubygems'
require 'bundler/setup'
require 'lotus/validations'

puts "Lotus::Validations::VERSION: #{ Lotus::Validations::VERSION }"

class Bar
  attr_reader :baz
  def initialize(value)
    @baz = value
  end
end

class FooValidator
  include Lotus::Validations
  attribute :bar,          type: Bar
end

foo = FooValidator.new(bar: 'BAZBAZ')

puts "before"
puts foo.bar
puts foo.bar.class.name
puts foo.bar.baz
puts foo.bar.baz.class.name
puts "\n\n\n"

foo.valid?

puts "after"
puts foo.bar
puts foo.bar.class.name
puts foo.bar.baz
puts foo.bar.baz.class.name

__END__

Lotus::Validations::VERSION: 0.2.0

# CORRECT (lazy coercion)
before
#<Bar:0x007fa6359b8948>
Bar
BAZBAZ
String



# WRONG (coercion triggered by #valid?)
after
#<Bar:0x007fa6359b8240>
Bar
#<Bar:0x007fa6359b8420>
Bar