Paranoia gem bug

paranoid_test.rb

begin
  require "bundler/inline"
rescue LoadError => e
  warn "Bundler version 1.10 or later is required. Please update your Bundler"
  raise e
end

gemfile(true) do
  source "https://rubygems.org"
  gem "rails", "5.2.3" # use correct rails version
  gem "sqlite3"#, "1.3.6" # use another DB if necessary
  gem "paranoia"
end
require "active_record"
require "minitest/autorun"
require "logger"
# This connection will do for database-independent bug reports.
ActiveRecord::Base.establish_connection(:adapter => "sqlite3", :database => ":memory:")
ActiveRecord::Base.logger = Logger.new(STDOUT)
# create your tables here
ActiveRecord::Schema.define do
  create_table :books, :force => true do |t|
    t.integer :library_id
    t.string :name
    t.datetime :deleted_at
    t.timestamps null: false
  end
  create_table :libraries, :force => true do |t|
    t.string :name
    t.datetime :deleted_at
    t.timestamps null: false
  end
end


class Library < ActiveRecord::Base
  has_many :books, :dependent => :destroy, :inverse_of => :library
  has_many :library_users
  acts_as_paranoid

  before_destroy :validate_delete

  def validate_delete
    self.errors.add(:base, :not_available_destroy)
    throw(:abort) if self.errors.any?
    false
  end
end

class Book < ActiveRecord::Base
  belongs_to :library
  acts_as_paranoid
end

class ArticleTest < ActiveSupport::TestCase
  def test_create
    lib = Library.create!(:name => "Test library")
    book = lib.books.create!(:name => "Test book")
    lib.destroy
    assert_nil(lib.reload.deleted_at, "Library must be not deleted")
    assert_nil(book.reload.deleted_at, "Book must be not deleted")
  end
end