In-memory ActiveRecord Test Bed

active_record_test_bed.rb

# active_record_testbed.rb
require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'activerecord', require: 'active_record'
  gem 'sqlite3', require: true
  gem 'pry', require: true
end

ActiveRecord::Base.logger = Logger.new($stdout)
ActiveRecord::Base.establish_connection(
  adapter: 'sqlite3',
  database: ':memory:'
)

ActiveRecord::Schema.define do
  create_table :users do |table|
    table.integer :name, null: false
    table.integer :account_id, null: false
  end
end

class User < ActiveRecord::Base; end

binding.pry