Created
September 21, 2018 12:36
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| # frozen_string_literal: true | |
| begin | |
| require "bundler/inline" | |
| rescue LoadError => e | |
| $stderr.puts "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" } | |
| # Activate the gem you are reporting the issue against. | |
| # gem "activerecord", "5.2.1" | |
| gem "activerecord", :path => './rails/activerecord' | |
| gem "activesupport", :path => './rails/activesupport' | |
| gem "activemodel", :path => './rails/activemodel' | |
| gem "sqlite3" | |
| end | |
| require "active_record" | |
| require "minitest/autorun" | |
| require "logger" | |
| # Ensure backward compatibility with minitest 4. | |
| Minitest::Test = MiniTest::Unit::TestCase unless defined?(Minitest::Test) | |
| # 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 :orders, force: true do |t| | |
| end | |
| create_table :items, force: true do |t| | |
| end | |
| create_table :item_orders, force: true do |t| | |
| t.integer :item_id | |
| t.integer :order_id | |
| end | |
| end | |
| class Order < ActiveRecord::Base | |
| has_many :item_orders | |
| has_many :items, through: :item_orders | |
| end | |
| class Item < ActiveRecord::Base | |
| has_many :item_orders | |
| has_many :orders, through: :item_orders | |
| end | |
| class ItemOrder < ActiveRecord::Base | |
| belongs_to :item | |
| belongs_to :order | |
| end | |
| class HasManyThroughJoinModelAndDuplicateBugTest < Minitest::Test | |
| attr_reader :item, :order | |
| def teardown | |
| Item.destroy_all | |
| end | |
| def setup | |
| @item = Item.create! | |
| @order = Order.create! | |
| end | |
| # Objects | |
| def test_append_collection # ok | |
| order.items << item | |
| order.items << item | |
| assert_equal 2, order.items.count | |
| end | |
| def test_replace_collection # ok | |
| order.items.replace([item, item]) | |
| assert_equal 2, order.items.count | |
| end | |
| def test_assign_collection # ok | |
| order.items = [item, item] | |
| assert_equal 2, order.items.count | |
| end | |
| def test_replace_collection_preexisting # failing | |
| order.items.replace([item]) | |
| order.items.replace([item, item]) | |
| assert_equal 2, order.items.count | |
| end | |
| def test_assign_collection_preexisting # failing | |
| order.items = [item] | |
| order.items = [item, item] | |
| assert_equal 2, order.items.count | |
| end | |
| # IDs | |
| def test_ids_writer_assignment_with_duplicates # ok | |
| order.item_ids = [item.id, item.id] | |
| assert_equal 2, order.items.count | |
| end | |
| def test_ids_writer_with_preexisting # failing | |
| order.item_ids = [item.id] | |
| order.item_ids = [item.id, item.id] | |
| assert_equal 2, order.items.count | |
| end | |
| # Available workaround | |
| def test_ids_writer_workaround | |
| order.item_ids = [item.id] | |
| order.item_ids.clear | |
| order.item_ids = [item.id, item.id] | |
| assert_equal 2, order.items.count | |
| end | |
| end |
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Output with ruby ruby 2.4.3p205 (2017-12-14 revision 61247)