32729.rb

# frozen_string_literal: true

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

gemfile(true) do
  source "https://rubygems.org"

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  gem "rails", github: "rails/rails"
  gem "sqlite3"
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)

ActiveRecord::Schema.define do
  create_table :posts, force: true do |t|
    t.string :column
    t.string :ignored
  end
end

class Post < ActiveRecord::Base
  self.ignored_columns = [:ignored]
end

class BugTest < Minitest::Test
  def test_ignored
    assert_equal ['ignored'], Post.ignored_columns
  end

  def test_attributes
    assert_raises ActiveModel::UnknownAttributeError,
      post = Post.create!(column: 'value', ignored: 'another value')

    expected_attributes = {
      'id' => post.id,
      'column' => 'value',
      'ignored' => 'another value',
    }

    assert_equal 3, post.attributes.size
    assert_equal expected_attributes, post.attributes
  end
end