has_one-associations-bug_test.rb

# frozen_string_literal: true

require "bundler/inline"

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

  gem "rails"
  # If you want to test against edge Rails replace the previous line with this:
  # gem "rails", github: "rails/rails", branch: "main"

  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 :responses, force: true do |t|
    t.integer :client_id, null: false
  end

  create_table :clients, force: true do |t|
  end
end

class Response < ActiveRecord::Base
  belongs_to :client
end

class Client < ActiveRecord::Base
  has_many :response
  has_one :response
end

class BugTest < Minitest::Test
  def test_association_stuff
    client = Client.create!
    client.create_response!

    # NoMethodError: undefined method `find_all' for #<Response>
    client.save!
  end
end