require "cases/helper" require "models/topic" require "models/reply" require "models/post" require "models/author" class YamlSerializationTest < ActiveRecord::TestCase fixtures :topics, :authors, :author_addresses, :posts def test_to_yaml_with_time_with_zone_should_not_raise_exception with_timezone_config aware_attributes: true, zone: "Pacific Time (US & Canada)" do topic = Topic.new(written_on: DateTime.now) assert_nothing_raised { topic.to_yaml } end end def test_roundtrip topic = Topic.first assert topic t = YAML.load YAML.dump topic assert_equal topic, t end def test_roundtrip_serialized_column topic = Topic.new(content: { omg: :lol }) assert_equal({ omg: :lol }, YAML.load(YAML.dump(topic)).content) end def test_psych_roundtrip topic = Topic.first assert topic t = Psych.load Psych.dump topic assert_equal topic, t end def test_psych_roundtrip_new_object topic = Topic.new assert topic t = Psych.load Psych.dump topic assert_equal topic.attributes, t.attributes end def test_active_record_relation_serialization [Topic.all].to_yaml end def test_raw_types_are_not_changed_on_round_trip topic = Topic.new(parent_id: "123") assert_equal "123", topic.parent_id_before_type_cast assert_equal "123", YAML.load(YAML.dump(topic)).parent_id_before_type_cast end def test_cast_types_are_not_changed_on_round_trip topic = Topic.new(parent_id: "123") assert_equal 123, topic.parent_id assert_equal 123, YAML.load(YAML.dump(topic)).parent_id end def test_new_records_remain_new_after_round_trip topic = Topic.new assert topic.new_record?, "Sanity check that new records are new" assert YAML.load(YAML.dump(topic)).new_record?, "Record should be new after deserialization" topic.save! assert_not topic.new_record?, "Saved records are not new" assert_not YAML.load(YAML.dump(topic)).new_record?, "Saved record should not be new after deserialization" topic = Topic.select("title").last assert_not topic.new_record?, "Loaded records without ID are not new" assert_not YAML.load(YAML.dump(topic)).new_record?, "Record should not be new after deserialization" end def test_types_of_virtual_columns_are_not_changed_on_round_trip author = Author.select("authors.*, count(posts.id) as posts_count") .joins(:posts) .group("authors.id") .first dumped = YAML.load(YAML.dump(author)) assert_equal 5, author.posts_count assert_equal 5, dumped.posts_count end def test_a_yaml_version_is_provided_for_future_backwards_compat coder = {} Topic.first.encode_with(coder) assert coder["active_record_yaml_version"] end def test_deserializing_rails_41_yaml topic = YAML.load(yaml_fixture("rails_4_1")) assert topic.new_record? assert_nil topic.id assert_equal "The First Topic", topic.title assert_equal({ omg: :lol }, topic.content) end def test_deserializing_rails_4_2_0_yaml topic = YAML.load(yaml_fixture("rails_4_2_0")) assert_not topic.new_record? assert_equal 1, topic.id assert_equal "The First Topic", topic.title assert_equal("Have a nice day", topic.content) end def test_yaml_encoding_keeps_mutations author = Author.first author.name = "Sean" dumped = YAML.load(YAML.dump(author)) assert_equal "Sean", dumped.name assert_equal author.name_was, dumped.name_was assert_equal author.changes, dumped.changes end def test_yaml_encoding_keeps_false_values topic = Topic.first topic.approved = false dumped = YAML.load(YAML.dump(topic)) assert_equal false, dumped.approved end private def yaml_fixture(file_name) path = File.expand_path( "../support/yaml_compatibility_fixtures/#{file_name}.yml", __dir__ ) File.read(path) end end