mirror of
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396 lines
11 KiB
Ruby
396 lines
11 KiB
Ruby
# frozen_string_literal: true
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require "cases/helper"
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require "models/topic"
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require "models/reply"
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require "models/person"
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require "models/traffic_light"
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require "models/post"
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require "bcrypt"
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class SerializedAttributeTest < ActiveRecord::TestCase
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fixtures :topics, :posts
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MyObject = Struct.new :attribute1, :attribute2
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teardown do
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Topic.serialize("content")
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end
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def test_serialize_does_not_eagerly_load_columns
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Topic.reset_column_information
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assert_no_queries do
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Topic.serialize(:content)
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end
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end
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def test_serialized_attribute
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Topic.serialize("content", MyObject)
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myobj = MyObject.new("value1", "value2")
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topic = Topic.create("content" => myobj)
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assert_equal(myobj, topic.content)
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topic.reload
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assert_equal(myobj, topic.content)
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end
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def test_serialized_attribute_in_base_class
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Topic.serialize("content", Hash)
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hash = { "content1" => "value1", "content2" => "value2" }
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important_topic = ImportantTopic.create("content" => hash)
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assert_equal(hash, important_topic.content)
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important_topic.reload
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assert_equal(hash, important_topic.content)
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end
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def test_serialized_attributes_from_database_on_subclass
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Topic.serialize :content, Hash
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t = Reply.new(content: { foo: :bar })
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assert_equal({ foo: :bar }, t.content)
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t.save!
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t = Reply.last
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assert_equal({ foo: :bar }, t.content)
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end
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def test_serialized_attribute_calling_dup_method
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Topic.serialize :content, JSON
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orig = Topic.new(content: { foo: :bar })
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clone = orig.dup
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assert_equal(orig.content, clone.content)
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end
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def test_serialized_json_attribute_returns_unserialized_value
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Topic.serialize :content, JSON
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my_post = posts(:welcome)
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t = Topic.new(content: my_post)
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t.save!
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t.reload
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assert_instance_of(Hash, t.content)
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assert_equal(my_post.id, t.content["id"])
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assert_equal(my_post.title, t.content["title"])
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end
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def test_json_read_legacy_null
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Topic.serialize :content, JSON
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# Force a row to have a JSON "null" instead of a database NULL (this is how
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# null values are saved on 4.1 and before)
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id = Topic.connection.insert "INSERT INTO topics (content) VALUES('null')"
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t = Topic.find(id)
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assert_nil t.content
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end
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def test_json_read_db_null
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Topic.serialize :content, JSON
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# Force a row to have a database NULL instead of a JSON "null"
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id = Topic.connection.insert "INSERT INTO topics (content) VALUES(NULL)"
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t = Topic.find(id)
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assert_nil t.content
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end
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def test_serialized_attribute_declared_in_subclass
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hash = { "important1" => "value1", "important2" => "value2" }
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important_topic = ImportantTopic.create("important" => hash)
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assert_equal(hash, important_topic.important)
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important_topic.reload
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assert_equal(hash, important_topic.important)
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assert_equal(hash, important_topic.read_attribute(:important))
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end
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def test_serialized_time_attribute
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myobj = Time.local(2008, 1, 1, 1, 0)
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topic = Topic.create("content" => myobj).reload
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assert_equal(myobj, topic.content)
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end
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def test_serialized_string_attribute
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myobj = "Yes"
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topic = Topic.create("content" => myobj).reload
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assert_equal(myobj, topic.content)
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end
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def test_nil_serialized_attribute_without_class_constraint
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topic = Topic.new
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assert_nil topic.content
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end
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def test_nil_not_serialized_without_class_constraint
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assert Topic.new(content: nil).save
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assert_equal 1, Topic.where(content: nil).count
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end
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def test_nil_not_serialized_with_class_constraint
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Topic.serialize :content, Hash
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assert Topic.new(content: nil).save
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assert_equal 1, Topic.where(content: nil).count
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end
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def test_serialized_attribute_should_raise_exception_on_assignment_with_wrong_type
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Topic.serialize(:content, Hash)
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assert_raise(ActiveRecord::SerializationTypeMismatch) do
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Topic.new(content: "string")
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end
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end
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def test_should_raise_exception_on_serialized_attribute_with_type_mismatch
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myobj = MyObject.new("value1", "value2")
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topic = Topic.new(content: myobj)
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assert topic.save
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Topic.serialize(:content, Hash)
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assert_raise(ActiveRecord::SerializationTypeMismatch) { Topic.find(topic.id).content }
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end
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def test_serialized_attribute_with_class_constraint
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settings = { "color" => "blue" }
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Topic.serialize(:content, Hash)
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topic = Topic.new(content: settings)
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assert topic.save
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assert_equal(settings, Topic.find(topic.id).content)
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end
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def test_where_by_serialized_attribute_with_array
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settings = [ "color" => "green" ]
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Topic.serialize(:content, Array)
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topic = Topic.create!(content: settings)
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assert_equal topic, Topic.where(content: settings).take
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end
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def test_where_by_serialized_attribute_with_hash
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settings = { "color" => "green" }
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Topic.serialize(:content, Hash)
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topic = Topic.create!(content: settings)
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assert_equal topic, Topic.where(content: settings).take
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end
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def test_where_by_serialized_attribute_with_hash_in_array
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settings = { "color" => "green" }
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Topic.serialize(:content, Hash)
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topic = Topic.create!(content: settings)
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assert_equal topic, Topic.where(content: [settings]).take
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end
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def test_serialized_default_class
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Topic.serialize(:content, Hash)
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topic = Topic.new
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assert_equal Hash, topic.content.class
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assert_equal Hash, topic.read_attribute(:content).class
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topic.content["beer"] = "MadridRb"
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assert topic.save
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topic.reload
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assert_equal Hash, topic.content.class
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assert_equal "MadridRb", topic.content["beer"]
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end
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def test_serialized_no_default_class_for_object
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topic = Topic.new
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assert_nil topic.content
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end
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def test_serialized_boolean_value_true
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topic = Topic.new(content: true)
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assert topic.save
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topic = topic.reload
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assert_equal true, topic.content
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end
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def test_serialized_boolean_value_false
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topic = Topic.new(content: false)
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assert topic.save
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topic = topic.reload
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assert_equal false, topic.content
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end
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def test_serialize_with_coder
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some_class = Struct.new(:foo) do
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def self.dump(value)
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value.foo
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end
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def self.load(value)
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new(value)
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end
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end
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Topic.serialize(:content, some_class)
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topic = Topic.new(content: some_class.new("my value"))
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topic.save!
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topic.reload
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assert_kind_of some_class, topic.content
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assert_equal some_class.new("my value"), topic.content
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end
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def test_serialize_attribute_via_select_method_when_time_zone_available
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with_timezone_config aware_attributes: true do
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Topic.serialize(:content, MyObject)
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myobj = MyObject.new("value1", "value2")
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topic = Topic.create(content: myobj)
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assert_equal(myobj, Topic.select(:content).find(topic.id).content)
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assert_raise(ActiveModel::MissingAttributeError) { Topic.select(:id).find(topic.id).content }
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end
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end
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def test_serialize_attribute_can_be_serialized_in_an_integer_column
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insures = ["life"]
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person = SerializedPerson.new(first_name: "David", insures: insures)
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assert person.save
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person = person.reload
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assert_equal(insures, person.insures)
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end
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def test_regression_serialized_default_on_text_column_with_null_false
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light = TrafficLight.new
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assert_equal [], light.state
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assert_equal [], light.long_state
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end
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def test_unexpected_serialized_type
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Topic.serialize :content, Hash
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topic = Topic.create!(content: { zomg: true })
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Topic.serialize :content, Array
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topic.reload
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error = assert_raise(ActiveRecord::SerializationTypeMismatch) do
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topic.content
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end
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expected = "can't load `content`: was supposed to be a Array, but was a Hash. -- {:zomg=>true}"
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assert_equal expected, error.to_s
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end
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def test_serialized_column_should_unserialize_after_update_column
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t = Topic.create(content: "first")
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assert_equal("first", t.content)
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t.update_column(:content, ["second"])
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assert_equal(["second"], t.content)
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assert_equal(["second"], t.reload.content)
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end
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def test_serialized_column_should_unserialize_after_update_attribute
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t = Topic.create(content: "first")
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assert_equal("first", t.content)
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t.update_attribute(:content, "second")
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assert_equal("second", t.content)
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assert_equal("second", t.reload.content)
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end
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def test_nil_is_not_changed_when_serialized_with_a_class
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Topic.serialize(:content, Array)
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topic = Topic.new(content: nil)
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assert_not_predicate topic, :content_changed?
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end
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def test_classes_without_no_arg_constructors_are_not_supported
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assert_raises(ArgumentError) do
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Topic.serialize(:content, Regexp)
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end
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end
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def test_newly_emptied_serialized_hash_is_changed
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Topic.serialize(:content, Hash)
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topic = Topic.create(content: { "things" => "stuff" })
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topic.content.delete("things")
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topic.save!
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topic.reload
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assert_equal({}, topic.content)
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end
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def test_values_cast_from_nil_are_persisted_as_nil
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# This is required to fulfil the following contract, which must be universally
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# true in Active Record:
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#
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# model.attribute = value
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# assert_equal model.attribute, model.tap(&:save).reload.attribute
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Topic.serialize(:content, Hash)
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topic = Topic.create!(content: {})
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topic2 = Topic.create!(content: nil)
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assert_equal [topic, topic2], Topic.where(content: nil)
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end
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def test_nil_is_always_persisted_as_null
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Topic.serialize(:content, Hash)
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topic = Topic.create!(content: { foo: "bar" })
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topic.update_attribute :content, nil
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assert_equal [topic], Topic.where(content: nil)
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end
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def test_mutation_detection_does_not_double_serialize
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coder = Object.new
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def coder.dump(value)
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return if value.nil?
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value + " encoded"
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end
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def coder.load(value)
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return if value.nil?
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value.gsub(" encoded", "")
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end
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type = Class.new(ActiveModel::Type::Value) do
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include ActiveModel::Type::Helpers::Mutable
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def serialize(value)
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return if value.nil?
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value + " serialized"
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end
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def deserialize(value)
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return if value.nil?
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value.gsub(" serialized", "")
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end
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end.new
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model = Class.new(Topic) do
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attribute :foo, type
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serialize :foo, coder
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end
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topic = model.create!(foo: "bar")
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topic.foo
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assert_not_predicate topic, :changed?
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end
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def test_serialized_attribute_works_under_concurrent_initial_access
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model = Topic.dup
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topic = model.last
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topic.update group: "1"
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model.serialize :group, JSON
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model.reset_column_information
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# This isn't strictly necessary for the test, but a little bit of
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# knowledge of internals allows us to make failures far more likely.
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model.define_singleton_method(:define_attribute) do |*args|
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Thread.pass
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super(*args)
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end
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threads = 4.times.map do
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Thread.new do
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topic.reload.group
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end
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end
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# All the threads should retrieve the value knowing it is JSON, and
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# thus decode it. If this fails, some threads will instead see the
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# raw string ("1"), or raise an exception.
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assert_equal [1] * threads.size, threads.map(&:value)
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end
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end
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