A showcase of oaken, using data from its test suite. Early Access at: https://kaspthrb.gumroad.com/l/open-source-retreat-summer-2023

db-seeds-accounts-kaspers_donuts.rb

donuts = accounts.create :kaspers_donuts, name: "Kasper's Donuts"

kasper   = users.create :kasper,   name: "Kasper",   accounts: [donuts]
coworker = users.create :coworker, name: "Coworker", accounts: [donuts]

menu = menus.create account: donuts
plain_donut     = menu_items.create menu: menu, name: "Plain",     price_cents: 10_00
sprinkled_donut = menu_items.create menu: menu, name: "Sprinkled", price_cents: 10_10

supporter = users.create name: "Super Supporter"
orders.insert_all [user_id: supporter.id, item_id: plain_donut.id] * 10

orders.insert_all \
  10.times.map { { user_id: users.create(name: "Customer #{_1}").id, item_id: menu.items.sample.id } }

db-seeds-data-plans.rb

plans.insert :basic, title: "Basic", price_cents: 10_00

db-seeds.rb

Oaken.prepare do
  register Menu::Item

  seed :accounts, :data
end

test-integration-pagination_test.rb

require "test_helper"

class PaginationTest < ActiveSupport::TestCase
  seed "cases/pagination" # Allows you to seed custom cases too.

  test "pagination sorta" do
    assert_operator Order.count, :>=, 100
  end
end

test-models-account_test.rb

require "test_helper"

class AccountTest < ActiveSupport::TestCase
  test "something" do
    assert accounts.kaspers_donuts # `create :kaspers_donuts` defines a reader method on `accounts` to find the same record again.
  end
end

test-test_helper.rb

ENV["RAILS_ENV"] ||= "test"
require_relative "../config/environment"
require "rails/test_help"

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

class ActiveSupport::TestCase
  # Run tests in parallel with specified workers
  parallelize workers: :number_of_processors

  # Loads from db/seeds.rb to reuse the same data that devs see in browsers and help reinforce your object graph's connections in tests.
  include Oaken.seeds
  
  # Override Minitest::Test#run to wrap each test in a transaction.
  def run
    result = nil
    ActiveRecord::Base.transaction(requires_new: true) do
      result = super
      raise ActiveRecord::Rollback
    end
    result
  end
end