/
test_fixtures.rb
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/
test_fixtures.rb
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# frozen_string_literal: true
require "active_support/core_ext/enumerable"
module ActiveRecord
module TestFixtures
extend ActiveSupport::Concern
def before_setup # :nodoc:
setup_fixtures
super
end
def after_teardown # :nodoc:
super
ensure
teardown_fixtures
end
included do
##
# :singleton-method: fixture_paths
#
# Returns the ActiveRecord::FixtureSet collection
##
# :singleton-method: fixture_paths=
#
# :call-seq:
# fixture_paths=(fixture_paths)
class_attribute :fixture_paths, instance_writer: false, default: []
class_attribute :fixture_table_names, default: []
class_attribute :fixture_class_names, default: {}
class_attribute :use_transactional_tests, default: true
class_attribute :use_instantiated_fixtures, default: false # true, false, or :no_instances
class_attribute :pre_loaded_fixtures, default: false
class_attribute :lock_threads, default: true
class_attribute :fixture_sets, default: {}
ActiveSupport.run_load_hooks(:active_record_fixtures, self)
end
module ClassMethods
# Sets the model class for a fixture when the class name cannot be inferred from the fixture name.
#
# Examples:
#
# set_fixture_class some_fixture: SomeModel,
# 'namespaced/fixture' => Another::Model
#
# The keys must be the fixture names, that coincide with the short paths to the fixture files.
def set_fixture_class(class_names = {})
self.fixture_class_names = fixture_class_names.merge(class_names.stringify_keys)
end
def fixtures(*fixture_set_names)
if fixture_set_names.first == :all
raise StandardError, "No fixture path found. Please set `#{self}.fixture_paths`." if fixture_paths.blank?
fixture_set_names = fixture_paths.flat_map do |path|
names = Dir[::File.join(path, "{**,*}/*.{yml}")].uniq
names.reject! { |f| f.start_with?(file_fixture_path.to_s) } if defined?(file_fixture_path) && file_fixture_path
names.map! { |f| f[path.to_s.size..-5].delete_prefix("/") }
end.uniq
else
fixture_set_names = fixture_set_names.flatten.map(&:to_s)
end
self.fixture_table_names = (fixture_table_names | fixture_set_names).sort
setup_fixture_accessors(fixture_set_names)
end
def setup_fixture_accessors(fixture_set_names = nil)
fixture_set_names = Array(fixture_set_names || fixture_table_names)
unless fixture_set_names.empty?
self.fixture_sets = fixture_sets.dup
fixture_set_names.each do |fs_name|
key = fs_name.to_s.include?("/") ? -fs_name.to_s.tr("/", "_") : fs_name
key = -key.to_s if key.is_a?(Symbol)
fs_name = -fs_name.to_s if fs_name.is_a?(Symbol)
fixture_sets[key] = fs_name
end
end
end
# Prevents automatically wrapping each specified test in a transaction,
# to allow application logic transactions to be tested in a top-level
# (non-nested) context.
def uses_transaction(*methods)
@uses_transaction = [] unless defined?(@uses_transaction)
@uses_transaction.concat methods.map(&:to_s)
end
def uses_transaction?(method)
@uses_transaction = [] unless defined?(@uses_transaction)
@uses_transaction.include?(method.to_s)
end
end
private
def run_in_transaction?
use_transactional_tests &&
!self.class.uses_transaction?(name)
end
def setup_fixtures(config = ActiveRecord::Base)
if pre_loaded_fixtures && !use_transactional_tests
raise RuntimeError, "pre_loaded_fixtures requires use_transactional_tests"
end
@fixture_cache = {}
@fixture_cache_key = [self.class.fixture_table_names.dup, self.class.fixture_paths.dup, self.class.fixture_class_names.dup]
@fixture_connection_pools = []
@@already_loaded_fixtures ||= {}
@connection_subscriber = nil
@saved_pool_configs = Hash.new { |hash, key| hash[key] = {} }
if run_in_transaction?
# Load fixtures once and begin transaction.
@loaded_fixtures = @@already_loaded_fixtures[@fixture_cache_key]
unless @loaded_fixtures
@@already_loaded_fixtures.clear
@loaded_fixtures = @@already_loaded_fixtures[@fixture_cache_key] = load_fixtures(config)
end
setup_transactional_fixtures
else
# Load fixtures for every test.
ActiveRecord::FixtureSet.reset_cache
invalidate_already_loaded_fixtures
@loaded_fixtures = load_fixtures(config)
end
# Instantiate fixtures for every test if requested.
instantiate_fixtures if use_instantiated_fixtures
end
def teardown_fixtures
# Rollback changes if a transaction is active.
if run_in_transaction?
teardown_transactional_fixtures
else
ActiveRecord::FixtureSet.reset_cache
invalidate_already_loaded_fixtures
end
ActiveRecord::Base.connection_handler.clear_active_connections!(:all)
end
def invalidate_already_loaded_fixtures
@@already_loaded_fixtures.clear
end
def setup_transactional_fixtures
setup_shared_connection_pool
# Begin transactions for connections already established
@fixture_connection_pools = ActiveRecord::Base.connection_handler.connection_pool_list(:writing)
@fixture_connection_pools.each do |pool|
pool.pin_connection!(lock_threads)
pool.lease_connection
end
# When connections are established in the future, begin a transaction too
@connection_subscriber = ActiveSupport::Notifications.subscribe("!connection.active_record") do |_, _, _, _, payload|
connection_name = payload[:connection_name] if payload.key?(:connection_name)
shard = payload[:shard] if payload.key?(:shard)
if connection_name
pool = ActiveRecord::Base.connection_handler.retrieve_connection_pool(connection_name, shard: shard)
if pool
setup_shared_connection_pool
unless @fixture_connection_pools.include?(pool)
pool.pin_connection!(lock_threads)
pool.lease_connection
@fixture_connection_pools << pool
end
end
end
end
end
def teardown_transactional_fixtures
ActiveSupport::Notifications.unsubscribe(@connection_subscriber) if @connection_subscriber
unless @fixture_connection_pools.map(&:unpin_connection!).all?
# Something caused the transaction to be committed or rolled back
# We can no longer trust the database is in a clean state.
@@already_loaded_fixtures.clear
end
@fixture_connection_pools.clear
teardown_shared_connection_pool
end
# Shares the writing connection pool with connections on
# other handlers.
#
# In an application with a primary and replica the test fixtures
# need to share a connection pool so that the reading connection
# can see data in the open transaction on the writing connection.
def setup_shared_connection_pool
handler = ActiveRecord::Base.connection_handler
handler.connection_pool_names.each do |name|
pool_manager = handler.send(:connection_name_to_pool_manager)[name]
pool_manager.shard_names.each do |shard_name|
writing_pool_config = pool_manager.get_pool_config(ActiveRecord.writing_role, shard_name)
@saved_pool_configs[name][shard_name] ||= {}
pool_manager.role_names.each do |role|
next unless pool_config = pool_manager.get_pool_config(role, shard_name)
next if pool_config == writing_pool_config
@saved_pool_configs[name][shard_name][role] = pool_config
pool_manager.set_pool_config(role, shard_name, writing_pool_config)
end
end
end
end
def teardown_shared_connection_pool
handler = ActiveRecord::Base.connection_handler
@saved_pool_configs.each_pair do |name, shards|
pool_manager = handler.send(:connection_name_to_pool_manager)[name]
shards.each_pair do |shard_name, roles|
roles.each_pair do |role, pool_config|
next unless pool_manager.get_pool_config(role, shard_name)
pool_manager.set_pool_config(role, shard_name, pool_config)
end
end
end
@saved_pool_configs.clear
end
def load_fixtures(config)
ActiveRecord::FixtureSet.create_fixtures(fixture_paths, fixture_table_names, fixture_class_names, config).index_by(&:name)
end
def instantiate_fixtures
if pre_loaded_fixtures
raise RuntimeError, "Load fixtures before instantiating them." if ActiveRecord::FixtureSet.all_loaded_fixtures.empty?
ActiveRecord::FixtureSet.instantiate_all_loaded_fixtures(self, load_instances?)
else
raise RuntimeError, "Load fixtures before instantiating them." if @loaded_fixtures.nil?
@loaded_fixtures.each_value do |fixture_set|
ActiveRecord::FixtureSet.instantiate_fixtures(self, fixture_set, load_instances?)
end
end
end
def load_instances?
use_instantiated_fixtures != :no_instances
end
def method_missing(method, ...)
if fixture_sets.key?(method.name)
_active_record_fixture(method, ...)
else
super
end
end
def respond_to_missing?(method, include_private = false)
if include_private && fixture_sets.key?(method.name)
true
else
super
end
end
def _active_record_fixture(fixture_set_name, *fixture_names)
if fs_name = fixture_sets[fixture_set_name.name]
access_fixture(fs_name, *fixture_names)
else
raise StandardError, "No fixture set named '#{fixture_set_name.inspect}'"
end
end
alias_method :fixture, :_active_record_fixture
def access_fixture(fs_name, *fixture_names)
force_reload = fixture_names.pop if fixture_names.last == true || fixture_names.last == :reload
return_single_record = fixture_names.size == 1
fixture_names = @loaded_fixtures[fs_name].fixtures.keys if fixture_names.empty?
@fixture_cache[fs_name] ||= {}
instances = fixture_names.map do |f_name|
f_name = f_name.to_s if f_name.is_a?(Symbol)
@fixture_cache[fs_name].delete(f_name) if force_reload
if @loaded_fixtures[fs_name][f_name]
@fixture_cache[fs_name][f_name] ||= @loaded_fixtures[fs_name][f_name].find
else
raise StandardError, "No fixture named '#{f_name}' found for fixture set '#{fs_name}'"
end
end
return_single_record ? instances.first : instances
end
end
end