require 'abstract_unit' require 'models/topic' class AttributeMethodsTest < ActiveSupport::TestCase fixtures :topics def setup @old_suffixes = ActiveRecord::Base.send(:attribute_method_suffixes).dup @target = Class.new(ActiveRecord::Base) @target.table_name = 'topics' end def teardown ActiveRecord::Base.send(:attribute_method_suffixes).clear ActiveRecord::Base.attribute_method_suffix *@old_suffixes end def test_match_attribute_method_query_returns_match_data assert_not_nil md = @target.match_attribute_method?('title=') assert_equal 'title', md.pre_match assert_equal ['='], md.captures %w(_hello_world ist! _maybe?).each do |suffix| @target.class_eval "def attribute#{suffix}(*args) args end" @target.attribute_method_suffix suffix assert_not_nil md = @target.match_attribute_method?("title#{suffix}") assert_equal 'title', md.pre_match assert_equal [suffix], md.captures end end def test_declared_attribute_method_affects_respond_to_and_method_missing topic = @target.new(:title => 'Budget') assert topic.respond_to?('title') assert_equal 'Budget', topic.title assert !topic.respond_to?('title_hello_world') assert_raise(NoMethodError) { topic.title_hello_world } %w(_hello_world _it! _candidate= able?).each do |suffix| @target.class_eval "def attribute#{suffix}(*args) args end" @target.attribute_method_suffix suffix meth = "title#{suffix}" assert topic.respond_to?(meth) assert_equal ['title'], topic.send(meth) assert_equal ['title', 'a'], topic.send(meth, 'a') assert_equal ['title', 1, 2, 3], topic.send(meth, 1, 2, 3) end end def test_should_unserialize_attributes_for_frozen_records myobj = {:value1 => :value2} topic = Topic.create("content" => myobj) topic.freeze assert_equal myobj, topic.content end def test_kernel_methods_not_implemented_in_activerecord %w(test name display y).each do |method| assert_equal false, ActiveRecord::Base.instance_method_already_implemented?(method), "##{method} is defined" end end def test_primary_key_implemented assert_equal true, Class.new(ActiveRecord::Base).instance_method_already_implemented?('id') end def test_defined_kernel_methods_implemented_in_model %w(test name display y).each do |method| klass = Class.new ActiveRecord::Base klass.class_eval "def #{method}() 'defined #{method}' end" assert_equal true, klass.instance_method_already_implemented?(method), "##{method} is not defined" end end def test_defined_kernel_methods_implemented_in_model_abstract_subclass %w(test name display y).each do |method| abstract = Class.new ActiveRecord::Base abstract.class_eval "def #{method}() 'defined #{method}' end" abstract.abstract_class = true klass = Class.new abstract assert_equal true, klass.instance_method_already_implemented?(method), "##{method} is not defined" end end def test_raises_dangerous_attribute_error_when_defining_activerecord_method_in_model %w(save create_or_update).each do |method| klass = Class.new ActiveRecord::Base klass.class_eval "def #{method}() 'defined #{method}' end" assert_raises ActiveRecord::DangerousAttributeError do klass.instance_method_already_implemented?(method) end end end def test_only_time_related_columns_are_meant_to_be_cached_by_default expected = %w(datetime timestamp time date).sort assert_equal expected, ActiveRecord::Base.attribute_types_cached_by_default.map(&:to_s).sort end def test_declaring_attributes_as_cached_adds_them_to_the_attributes_cached_by_default default_attributes = Topic.cached_attributes Topic.cache_attributes :replies_count expected = default_attributes + ["replies_count"] assert_equal expected.sort, Topic.cached_attributes.sort Topic.instance_variable_set "@cached_attributes", nil end def test_time_related_columns_are_actually_cached column_types = %w(datetime timestamp time date).map(&:to_sym) column_names = Topic.columns.select{|c| column_types.include?(c.type) }.map(&:name) assert_equal column_names.sort, Topic.cached_attributes.sort assert_equal time_related_columns_on_topic.sort, Topic.cached_attributes.sort end def test_accessing_cached_attributes_caches_the_converted_values_and_nothing_else t = topics(:first) cache = t.instance_variable_get "@attributes_cache" assert_not_nil cache assert cache.empty? all_columns = Topic.columns.map(&:name) cached_columns = time_related_columns_on_topic uncached_columns = all_columns - cached_columns all_columns.each do |attr_name| attribute_gets_cached = Topic.cache_attribute?(attr_name) val = t.send attr_name unless attr_name == "type" if attribute_gets_cached assert cached_columns.include?(attr_name) assert_equal val, cache[attr_name] else assert uncached_columns.include?(attr_name) assert !cache.include?(attr_name) end end end private def time_related_columns_on_topic Topic.columns.select{|c| [:time, :date, :datetime, :timestamp].include?(c.type)}.map(&:name) end end