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|
# frozen_string_literal: true
require "cases/helper"
require "models/author"
require "models/company"
require "models/membership"
require "models/person"
require "models/post"
require "models/project"
require "models/subscriber"
require "models/vegetables"
require "models/shop"
require "models/sponsor"
module InheritanceTestHelper
def with_store_full_sti_class(&block)
assign_store_full_sti_class true, &block
end
def without_store_full_sti_class(&block)
assign_store_full_sti_class false, &block
end
def assign_store_full_sti_class(flag)
old_store_full_sti_class = ActiveRecord::Base.store_full_sti_class
ActiveRecord::Base.store_full_sti_class = flag
yield
ensure
ActiveRecord::Base.store_full_sti_class = old_store_full_sti_class
end
end
class InheritanceTest < ActiveRecord::TestCase
include InheritanceTestHelper
fixtures :companies, :projects, :subscribers, :accounts, :vegetables, :memberships
def test_class_with_store_full_sti_class_returns_full_name
with_store_full_sti_class do
assert_equal "Namespaced::Company", Namespaced::Company.sti_name
end
end
def test_class_with_blank_sti_name
company = Company.first
company = company.dup
company.extend(Module.new {
def _read_attribute(name)
return " " if name == "type"
super
end
})
company.save!
company = Company.all.to_a.find { |x| x.id == company.id }
assert_equal " ", company.type
end
def test_class_without_store_full_sti_class_returns_demodulized_name
without_store_full_sti_class do
assert_equal "Company", Namespaced::Company.sti_name
end
end
def test_compute_type_success
assert_equal Author, Company.send(:compute_type, "Author")
end
def test_compute_type_nonexistent_constant
e = assert_raises NameError do
Company.send :compute_type, "NonexistentModel"
end
assert_equal "uninitialized constant Company::NonexistentModel", e.message
assert_equal "Company::NonexistentModel", e.name
end
def test_compute_type_no_method_error
ActiveSupport::Dependencies.stub(:safe_constantize, proc { raise NoMethodError }) do
assert_raises NoMethodError do
Company.send :compute_type, "InvalidModel"
end
end
end
def test_compute_type_on_undefined_method
error = nil
begin
Class.new(Author) do
alias_method :foo, :bar
end
rescue => e
error = e
end
ActiveSupport::Dependencies.stub(:safe_constantize, proc { raise e }) do
exception = assert_raises NameError do
Company.send :compute_type, "InvalidModel"
end
assert_equal error.message, exception.message
end
end
def test_compute_type_argument_error
ActiveSupport::Dependencies.stub(:safe_constantize, proc { raise ArgumentError }) do
assert_raises ArgumentError do
Company.send :compute_type, "InvalidModel"
end
end
end
def test_should_store_demodulized_class_name_with_store_full_sti_class_option_disabled
without_store_full_sti_class do
item = Namespaced::Company.new
assert_equal "Company", item[:type]
end
end
def test_should_store_full_class_name_with_store_full_sti_class_option_enabled
with_store_full_sti_class do
item = Namespaced::Company.new
assert_equal "Namespaced::Company", item[:type]
end
end
def test_different_namespace_subclass_should_load_correctly_with_store_full_sti_class_option
with_store_full_sti_class do
item = Namespaced::Company.create name: "Wolverine 2"
assert_not_nil Company.find(item.id)
assert_not_nil Namespaced::Company.find(item.id)
end
end
def test_descends_from_active_record
assert_not_predicate ActiveRecord::Base, :descends_from_active_record?
# Abstract subclass of AR::Base.
assert_predicate LoosePerson, :descends_from_active_record?
# Concrete subclass of an abstract class.
assert_predicate LooseDescendant, :descends_from_active_record?
# Concrete subclass of AR::Base.
assert_predicate TightPerson, :descends_from_active_record?
# Concrete subclass of a concrete class but has no type column.
assert_predicate TightDescendant, :descends_from_active_record?
# Concrete subclass of AR::Base.
assert_predicate Post, :descends_from_active_record?
# Concrete subclasses of a concrete class which has a type column.
assert_not_predicate StiPost, :descends_from_active_record?
assert_not_predicate SubStiPost, :descends_from_active_record?
# Abstract subclass of a concrete class which has a type column.
# This is pathological, as you'll never have Sub < Abstract < Concrete.
assert_not_predicate AbstractStiPost, :descends_from_active_record?
# Concrete subclass of an abstract class which has a type column.
assert_not_predicate SubAbstractStiPost, :descends_from_active_record?
end
def test_company_descends_from_active_record
assert_not_predicate ActiveRecord::Base, :descends_from_active_record?
assert AbstractCompany.descends_from_active_record?, "AbstractCompany should descend from ActiveRecord::Base"
assert Company.descends_from_active_record?, "Company should descend from ActiveRecord::Base"
assert_not Class.new(Company).descends_from_active_record?, "Company subclass should not descend from ActiveRecord::Base"
end
def test_abstract_class
assert_not_predicate ActiveRecord::Base, :abstract_class?
assert_predicate LoosePerson, :abstract_class?
assert_not_predicate LooseDescendant, :abstract_class?
end
def test_inheritance_base_class
assert_equal Post, Post.base_class
assert_predicate Post, :base_class?
assert_equal Post, SpecialPost.base_class
assert_not_predicate SpecialPost, :base_class?
assert_equal Post, StiPost.base_class
assert_not_predicate StiPost, :base_class?
assert_equal Post, SubStiPost.base_class
assert_not_predicate SubStiPost, :base_class?
assert_equal SubAbstractStiPost, SubAbstractStiPost.base_class
assert_predicate SubAbstractStiPost, :base_class?
end
def test_abstract_inheritance_base_class
assert_equal LoosePerson, LoosePerson.base_class
assert_predicate LoosePerson, :base_class?
assert_equal LooseDescendant, LooseDescendant.base_class
assert_predicate LooseDescendant, :base_class?
assert_equal TightPerson, TightPerson.base_class
assert_predicate TightPerson, :base_class?
assert_equal TightPerson, TightDescendant.base_class
assert_not_predicate TightDescendant, :base_class?
end
def test_base_class_activerecord_error
klass = Class.new { include ActiveRecord::Inheritance }
assert_raise(ActiveRecord::ActiveRecordError) { klass.base_class }
end
def test_a_bad_type_column
Company.connection.insert "INSERT INTO companies (id, #{QUOTED_TYPE}, name) VALUES(100, 'bad_class!', 'Not happening')"
assert_raise(ActiveRecord::SubclassNotFound) { Company.find(100) }
end
def test_inheritance_find
assert_kind_of Firm, Company.find(1), "37signals should be a firm"
assert_kind_of Firm, Firm.find(1), "37signals should be a firm"
assert_kind_of Client, Company.find(2), "Summit should be a client"
assert_kind_of Client, Client.find(2), "Summit should be a client"
end
def test_alt_inheritance_find
assert_kind_of Cucumber, Vegetable.find(1)
assert_kind_of Cucumber, Cucumber.find(1)
assert_kind_of Cabbage, Vegetable.find(2)
assert_kind_of Cabbage, Cabbage.find(2)
end
def test_alt_becomes_works_with_sti
vegetable = Vegetable.find(1)
assert_kind_of Vegetable, vegetable
cabbage = vegetable.becomes(Cabbage)
assert_kind_of Cabbage, cabbage
end
def test_becomes_and_change_tracking_for_inheritance_columns
cucumber = Vegetable.find(1)
cabbage = cucumber.becomes!(Cabbage)
assert_equal ["Cucumber", "Cabbage"], cabbage.custom_type_change
end
def test_alt_becomes_bang_resets_inheritance_type_column
vegetable = Vegetable.create!(name: "Red Pepper")
assert_nil vegetable.custom_type
cabbage = vegetable.becomes!(Cabbage)
assert_equal "Cabbage", cabbage.custom_type
cabbage.becomes!(Vegetable)
assert_nil cabbage.custom_type
end
def test_inheritance_find_all
companies = Company.all.merge!(order: "id").to_a
assert_kind_of Firm, companies[0], "37signals should be a firm"
assert_kind_of Client, companies[1], "Summit should be a client"
end
def test_alt_inheritance_find_all
companies = Vegetable.all.merge!(order: "id").to_a
assert_kind_of Cucumber, companies[0]
assert_kind_of Cabbage, companies[1]
end
def test_inheritance_save
firm = Firm.new
firm.name = "Next Angle"
firm.save
next_angle = Company.find(firm.id)
assert_kind_of Firm, next_angle, "Next Angle should be a firm"
end
def test_alt_inheritance_save
cabbage = Cabbage.new(name: "Savoy")
cabbage.save!
savoy = Vegetable.find(cabbage.id)
assert_kind_of Cabbage, savoy
end
def test_inheritance_new_with_default_class
company = Company.new
assert_equal Company, company.class
end
def test_inheritance_new_with_base_class
company = Company.new(type: "Company")
assert_equal Company, company.class
end
def test_inheritance_new_with_subclass
firm = Company.new(type: "Firm")
assert_equal Firm, firm.class
end
def test_where_new_with_subclass
firm = Company.where(type: "Firm").new
assert_equal Firm, firm.class
end
def test_where_create_with_subclass
firm = Company.where(type: "Firm").create(name: "Basecamp")
assert_equal Firm, firm.class
end
def test_where_create_bang_with_subclass
firm = Company.where(type: "Firm").create!(name: "Basecamp")
assert_equal Firm, firm.class
end
def test_new_with_abstract_class
e = assert_raises(NotImplementedError) do
AbstractCompany.new
end
assert_equal("AbstractCompany is an abstract class and cannot be instantiated.", e.message)
end
def test_new_with_ar_base
e = assert_raises(NotImplementedError) do
ActiveRecord::Base.new
end
assert_equal("ActiveRecord::Base is an abstract class and cannot be instantiated.", e.message)
end
def test_new_with_invalid_type
assert_raise(ActiveRecord::SubclassNotFound) { Company.new(type: "InvalidType") }
end
def test_new_with_unrelated_type
assert_raise(ActiveRecord::SubclassNotFound) { Company.new(type: "Account") }
end
def test_where_new_with_invalid_type
assert_raise(ActiveRecord::SubclassNotFound) { Company.where(type: "InvalidType").new }
end
def test_where_new_with_unrelated_type
assert_raise(ActiveRecord::SubclassNotFound) { Company.where(type: "Account").new }
end
def test_where_create_with_invalid_type
assert_raise(ActiveRecord::SubclassNotFound) { Company.where(type: "InvalidType").create }
end
def test_where_create_with_unrelated_type
assert_raise(ActiveRecord::SubclassNotFound) { Company.where(type: "Account").create }
end
def test_where_create_bang_with_invalid_type
assert_raise(ActiveRecord::SubclassNotFound) { Company.where(type: "InvalidType").create! }
end
def test_where_create_bang_with_unrelated_type
assert_raise(ActiveRecord::SubclassNotFound) { Company.where(type: "Account").create! }
end
def test_new_with_unrelated_namespaced_type
without_store_full_sti_class do
e = assert_raises ActiveRecord::SubclassNotFound do
Namespaced::Company.new(type: "Firm")
end
assert_equal "Invalid single-table inheritance type: Namespaced::Firm is not a subclass of Namespaced::Company", e.message
end
end
def test_new_with_complex_inheritance
assert_nothing_raised { Client.new(type: "VerySpecialClient") }
end
def test_new_without_storing_full_sti_class
without_store_full_sti_class do
item = Company.new(type: "SpecialCo")
assert_instance_of Company::SpecialCo, item
end
end
def test_new_with_autoload_paths
path = File.expand_path("../models/autoloadable", __dir__)
ActiveSupport::Dependencies.autoload_paths << path
firm = Company.new(type: "ExtraFirm")
assert_equal ExtraFirm, firm.class
ensure
ActiveSupport::Dependencies.autoload_paths.reject! { |p| p == path }
ActiveSupport::Dependencies.clear
end
def test_inheritance_condition
assert_equal 11, Company.count
assert_equal 2, Firm.count
assert_equal 5, Client.count
end
def test_alt_inheritance_condition
assert_equal 4, Vegetable.count
assert_equal 1, Cucumber.count
assert_equal 3, Cabbage.count
end
def test_finding_incorrect_type_data
assert_raise(ActiveRecord::RecordNotFound) { Firm.find(2) }
assert_nothing_raised { Firm.find(1) }
end
def test_alt_finding_incorrect_type_data
assert_raise(ActiveRecord::RecordNotFound) { Cucumber.find(2) }
assert_nothing_raised { Cucumber.find(1) }
end
def test_update_all_within_inheritance
Client.update_all "name = 'I am a client'"
assert_equal "I am a client", Client.first.name
# Order by added as otherwise Oracle tests were failing because of different order of results
assert_equal "37signals", Firm.all.merge!(order: "id").to_a.first.name
end
def test_alt_update_all_within_inheritance
Cabbage.update_all "name = 'the cabbage'"
assert_equal "the cabbage", Cabbage.first.name
assert_equal ["my cucumber"], Cucumber.all.map(&:name).uniq
end
def test_destroy_all_within_inheritance
Client.destroy_all
assert_equal 0, Client.count
assert_equal 2, Firm.count
end
def test_alt_destroy_all_within_inheritance
Cabbage.destroy_all
assert_equal 0, Cabbage.count
assert_equal 1, Cucumber.count
end
def test_find_first_within_inheritance
assert_kind_of Firm, Company.all.merge!(where: "name = '37signals'").first
assert_kind_of Firm, Firm.all.merge!(where: "name = '37signals'").first
assert_nil Client.all.merge!(where: "name = '37signals'").first
end
def test_alt_find_first_within_inheritance
assert_kind_of Cabbage, Vegetable.all.merge!(where: "name = 'his cabbage'").first
assert_kind_of Cabbage, Cabbage.all.merge!(where: "name = 'his cabbage'").first
assert_nil Cucumber.all.merge!(where: "name = 'his cabbage'").first
end
def test_complex_inheritance
very_special_client = VerySpecialClient.create("name" => "veryspecial")
assert_equal very_special_client, VerySpecialClient.where("name = 'veryspecial'").first
assert_equal very_special_client, SpecialClient.all.merge!(where: "name = 'veryspecial'").first
assert_equal very_special_client, Company.all.merge!(where: "name = 'veryspecial'").first
assert_equal very_special_client, Client.all.merge!(where: "name = 'veryspecial'").first
assert_equal 1, Client.all.merge!(where: "name = 'Summit'").to_a.size
assert_equal very_special_client, Client.find(very_special_client.id)
end
def test_alt_complex_inheritance
king_cole = KingCole.create("name" => "uniform heads")
assert_equal king_cole, KingCole.where("name = 'uniform heads'").first
assert_equal king_cole, GreenCabbage.all.merge!(where: "name = 'uniform heads'").first
assert_equal king_cole, Cabbage.all.merge!(where: "name = 'uniform heads'").first
assert_equal king_cole, Vegetable.all.merge!(where: "name = 'uniform heads'").first
assert_equal 1, Cabbage.all.merge!(where: "name = 'his cabbage'").to_a.size
assert_equal king_cole, Cabbage.find(king_cole.id)
end
def test_eager_load_belongs_to_something_inherited
account = Account.all.merge!(includes: :firm).find(1)
assert account.association(:firm).loaded?, "association was not eager loaded"
end
def test_alt_eager_loading
cabbage = RedCabbage.all.merge!(includes: :seller).find(4)
assert cabbage.association(:seller).loaded?, "association was not eager loaded"
end
def test_eager_load_belongs_to_primary_key_quoting
con = Account.connection
bind_param = Arel::Nodes::BindParam.new(nil)
assert_sql(/#{con.quote_table_name('companies')}\.#{con.quote_column_name('id')} = (?:#{Regexp.quote(bind_param.to_sql)}|1)/) do
Account.all.merge!(includes: :firm).find(1)
end
end
def test_inherits_custom_primary_key
assert_equal Subscriber.primary_key, SpecialSubscriber.primary_key
end
def test_inheritance_without_mapping
assert_kind_of SpecialSubscriber, SpecialSubscriber.find("webster132")
assert_nothing_raised { s = SpecialSubscriber.new("name" => "And breaaaaathe!"); s.id = "roger"; s.save }
end
def test_scope_inherited_properly
assert_nothing_raised { Company.of_first_firm }
assert_nothing_raised { Client.of_first_firm }
end
def test_inheritance_with_default_scope
assert_equal 1, SelectedMembership.count(:all)
end
end
class InheritanceComputeTypeTest < ActiveRecord::TestCase
include InheritanceTestHelper
fixtures :companies
teardown do
self.class.const_remove :FirmOnTheFly rescue nil
Firm.const_remove :FirmOnTheFly rescue nil
end
def test_instantiation_doesnt_try_to_require_corresponding_file
without_store_full_sti_class do
foo = Firm.first.clone
foo.type = "FirmOnTheFly"
foo.save!
# Should fail without FirmOnTheFly in the type condition.
assert_raise(ActiveRecord::RecordNotFound) { Firm.find(foo.id) }
assert_raise(ActiveRecord::RecordNotFound) { Firm.find_by!(id: foo.id) }
# Nest FirmOnTheFly in the test case where Dependencies won't see it.
self.class.const_set :FirmOnTheFly, Class.new(Firm)
assert_raise(ActiveRecord::SubclassNotFound) { Firm.find(foo.id) }
assert_raise(ActiveRecord::SubclassNotFound) { Firm.find_by!(id: foo.id) }
# Nest FirmOnTheFly in Firm where Dependencies will see it.
# This is analogous to nesting models in a migration.
Firm.const_set :FirmOnTheFly, Class.new(Firm)
# And instantiate will find the existing constant rather than trying
# to require firm_on_the_fly.
assert_nothing_raised { assert_kind_of Firm::FirmOnTheFly, Firm.find(foo.id) }
assert_nothing_raised { assert_kind_of Firm::FirmOnTheFly, Firm.find_by!(id: foo.id) }
end
end
def test_sti_type_from_attributes_disabled_in_non_sti_class
phone = Shop::Product::Type.new(name: "Phone")
product = Shop::Product.new(type: phone)
assert product.save
end
def test_inheritance_new_with_subclass_as_default
original_type = Company.columns_hash["type"].default
ActiveRecord::Base.connection.change_column_default :companies, :type, "Firm"
Company.reset_column_information
firm = Company.new # without arguments
assert_equal "Firm", firm.type
assert_instance_of Firm, firm
firm = Company.new(firm_name: "Shri Hans Plastic") # with arguments
assert_equal "Firm", firm.type
assert_instance_of Firm, firm
client = Client.new
assert_equal "Client", client.type
assert_instance_of Client, client
firm = Company.new(type: "Client") # overwrite the default type
assert_equal "Client", firm.type
assert_instance_of Client, firm
ensure
ActiveRecord::Base.connection.change_column_default :companies, :type, original_type
Company.reset_column_information
end
end
class InheritanceAttributeTest < ActiveRecord::TestCase
class Company < ActiveRecord::Base
self.table_name = "companies"
attribute :type, :string, default: "InheritanceAttributeTest::Startup"
end
class Startup < Company
end
class Empire < Company
end
def test_inheritance_new_with_subclass_as_default
startup = Company.new # without arguments
assert_equal "InheritanceAttributeTest::Startup", startup.type
assert_instance_of Startup, startup
empire = Company.new(type: "InheritanceAttributeTest::Empire") # without arguments
assert_equal "InheritanceAttributeTest::Empire", empire.type
assert_instance_of Empire, empire
end
end
class InheritanceAttributeMappingTest < ActiveRecord::TestCase
setup do
@old_registry = ActiveRecord::Type.registry
ActiveRecord::Type.registry = ActiveRecord::Type::AdapterSpecificRegistry.new
ActiveRecord::Type.register :omg_sti, InheritanceAttributeMappingTest::OmgStiType
Company.delete_all
Sponsor.delete_all
end
teardown do
ActiveRecord::Type.registry = @old_registry
end
class OmgStiType < ActiveRecord::Type::String
def cast_value(value)
if value =~ /\Aomg_(.+)\z/
$1.classify
else
value
end
end
def serialize(value)
if value
"omg_%s" % value.underscore
end
end
end
class Company < ActiveRecord::Base
self.table_name = "companies"
attribute :type, :omg_sti
end
class Startup < Company; end
class Empire < Company; end
class Sponsor < ActiveRecord::Base
self.table_name = "sponsors"
attribute :sponsorable_type, :omg_sti
belongs_to :sponsorable, polymorphic: true
end
def test_sti_with_custom_type
Startup.create! name: "a Startup"
Empire.create! name: "an Empire"
assert_equal [["a Startup", "omg_inheritance_attribute_mapping_test/startup"],
["an Empire", "omg_inheritance_attribute_mapping_test/empire"]], ActiveRecord::Base.connection.select_rows("SELECT name, type FROM companies").sort
assert_equal [["a Startup", "InheritanceAttributeMappingTest::Startup"],
["an Empire", "InheritanceAttributeMappingTest::Empire"]], Company.all.map { |a| [a.name, a.type] }.sort
startup = Startup.first
startup.becomes! Empire
startup.save!
assert_equal [["a Startup", "omg_inheritance_attribute_mapping_test/empire"],
["an Empire", "omg_inheritance_attribute_mapping_test/empire"]], ActiveRecord::Base.connection.select_rows("SELECT name, type FROM companies").sort
assert_equal [["a Startup", "InheritanceAttributeMappingTest::Empire"],
["an Empire", "InheritanceAttributeMappingTest::Empire"]], Company.all.map { |a| [a.name, a.type] }.sort
end
def test_polymorphic_associations_custom_type
startup = Startup.create! name: "a Startup"
sponsor = Sponsor.create! sponsorable: startup
assert_equal ["omg_inheritance_attribute_mapping_test/company"], ActiveRecord::Base.connection.select_values("SELECT sponsorable_type FROM sponsors")
sponsor = Sponsor.find(sponsor.id)
assert_equal startup, sponsor.sponsorable
end
end
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