psych_invalid_to_json_active_record.rb

# frozen_string_literal: true
begin
  require 'bundler/inline'
rescue LoadError => e
  $stderr.puts 'Bundler version 1.10 or later is required.'
  raise e
end

gemfile(true) do
  source 'https://rubygems.org'
  gem 'activerecord', '5.0.0'
  gem 'sqlite3'
end

require 'active_record'
require 'minitest/autorun'
require 'logger'

# Ensure backward compatibility with Minitest 4
Minitest::Test = MiniTest::Unit::TestCase unless defined?(Minitest::Test)

# 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|
  end
end

class Post < ActiveRecord::Base
end

class BugTest < Minitest::Test
  def test_psych_to_json_returns_valid_json
    post = Post.new
    json = Psych.to_json(post)
    puts json
    parsed = JSON.parse(json)
    assert_instance_of Hash, parsed
  end
end