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require "cases/helper"
require "models/topic"
require "models/reply"
require "models/post"
require "models/author"
class YamlSerializationTest < ActiveRecord::TestCase
fixtures :topics, :authors, :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_equal 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
private
def yaml_fixture(file_name)
path = File.expand_path(
"../../support/yaml_compatibility_fixtures/#{file_name}.yml",
__FILE__
)
File.read(path)
end
end
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