Executable test case for behavior of `where` with exclusive endless ranges

exclusive_endless_range_where_test.rb

# frozen_string_literal: true

require "bundler/inline"

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

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

  # Activate the gem you are reporting the issue against.
  gem "activerecord", "6.0.3"
  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 :things, force: true do |t|
    t.integer :number
  end
end

class Thing < ActiveRecord::Base
end

class EndlessRangeBugTest < Minitest::Test
  def test_query_with_upper_unbounded_exclusive_range
    Thing.create [{ number: 1 }, { number: 2 }]

    assert_equal 1, Thing.where(number: 1...::Float::INFINITY).count
  end
end