ActiveRecord fails to parse BCE dates in PostgreSQL ranges

bce_date_test.rb

# frozen_string_literal: true

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'

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

  gem 'rails', github: 'rails/rails'
  gem 'pg'
end

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

# Create the database with
# $ createuser test -P
# $ createdb test -o test
ActiveRecord::Base.establish_connection(
  adapter: 'postgresql', database: 'test', host: '127.0.0.1', username: 'test', password: 'test')

ActiveRecord::Base.logger = Logger.new(STDOUT)

ActiveRecord::Schema.define do
  create_table :date_tests, force: true do |t|
    t.timestamp :time
    t.tsrange :timerange
  end
end

class DateTest < ActiveRecord::Base
end

class BugTest < Minitest::Test
  BCE_TIME = ::DateTime.new(-1000, 1, 1, 0, 0)

  def teardown
    DateTest.delete_all
  end

  def test_bce_time
    record = DateTest.create(time: BCE_TIME)
    record.reload
    # This test currently passes
    assert_equal(BCE_TIME, record.time)
  end

  def test_bce_tsrange
    record = DateTest.create(timerange: (BCE_TIME .. Time.now.utc))
    record.reload
    # This test currently fails
    assert_equal(BCE_TIME, record.timerange.begin)
  end
end