require 'cases/helper' class ModelWithAttributes include ActiveModel::AttributeMethods class << self define_method(:bar) do 'original bar' end end def attributes { :foo => 'value of foo' } end private def attribute(name) attributes[name.to_sym] end end class ModelWithAttributes2 include ActiveModel::AttributeMethods attr_accessor :attributes attribute_method_suffix '_test' private def attribute(name) attributes[name.to_s] end alias attribute_test attribute def private_method "<3 <3" end protected def protected_method "O_o O_o" end end class ModelWithAttributesWithSpaces include ActiveModel::AttributeMethods def attributes { :'foo bar' => 'value of foo bar'} end private def attribute(name) attributes[name.to_sym] end end class ModelWithWeirdNamesAttributes include ActiveModel::AttributeMethods class << self define_method(:'c?d') do 'original c?d' end end def attributes { :'a?b' => 'value of a?b' } end private def attribute(name) attributes[name.to_sym] end end class AttributeMethodsTest < ActiveModel::TestCase test 'unrelated classes should not share attribute method matchers' do assert_not_equal ModelWithAttributes.send(:attribute_method_matchers), ModelWithAttributes2.send(:attribute_method_matchers) end test '#define_attribute_method generates attribute method' do ModelWithAttributes.define_attribute_method(:foo) assert_respond_to ModelWithAttributes.new, :foo assert_equal "value of foo", ModelWithAttributes.new.foo end test '#define_attribute_method does not generate attribute method if already defined in attribute module' do klass = Class.new(ModelWithAttributes) klass.generated_attribute_methods.module_eval do def foo '<3' end end klass.define_attribute_method(:foo) assert_equal '<3', klass.new.foo end test '#define_attribute_method generates a method that is already defined on the host' do klass = Class.new(ModelWithAttributes) do def foo super end end klass.define_attribute_method(:foo) assert_equal 'value of foo', klass.new.foo end test '#define_attribute_method generates attribute method with invalid identifier characters' do ModelWithWeirdNamesAttributes.define_attribute_method(:'a?b') assert_respond_to ModelWithWeirdNamesAttributes.new, :'a?b' assert_equal "value of a?b", ModelWithWeirdNamesAttributes.new.send('a?b') end test '#define_attribute_methods generates attribute methods' do ModelWithAttributes.define_attribute_methods([:foo]) assert_respond_to ModelWithAttributes.new, :foo assert_equal "value of foo", ModelWithAttributes.new.foo end test '#define_attribute_methods generates attribute methods with spaces in their names' do ModelWithAttributesWithSpaces.define_attribute_methods([:'foo bar']) assert_respond_to ModelWithAttributesWithSpaces.new, :'foo bar' assert_equal "value of foo bar", ModelWithAttributesWithSpaces.new.send(:'foo bar') end test '#alias_attribute works with attributes with spaces in their names' do ModelWithAttributesWithSpaces.define_attribute_methods([:'foo bar']) ModelWithAttributesWithSpaces.alias_attribute(:'foo_bar', :'foo bar') assert_equal "value of foo bar", ModelWithAttributesWithSpaces.new.foo_bar end test '#undefine_attribute_methods removes attribute methods' do ModelWithAttributes.define_attribute_methods([:foo]) ModelWithAttributes.undefine_attribute_methods assert !ModelWithAttributes.new.respond_to?(:foo) assert_raises(NoMethodError) { ModelWithAttributes.new.foo } end test 'acessing a suffixed attribute' do m = ModelWithAttributes2.new m.attributes = { 'foo' => 'bar' } assert_equal 'bar', m.foo assert_equal 'bar', m.foo_test end test 'explicitly specifying an empty prefix/suffix is deprecated' do klass = Class.new(ModelWithAttributes) assert_deprecated { klass.attribute_method_suffix '' } assert_deprecated { klass.attribute_method_prefix '' } klass.define_attribute_methods([:foo]) assert_equal 'value of foo', klass.new.foo end test 'should not interfere with method_missing if the attr has a private/protected method' do m = ModelWithAttributes2.new m.attributes = { 'private_method' => '<3', 'protected_method' => 'O_o' } # dispatches to the *method*, not the attribute assert_equal '<3 <3', m.send(:private_method) assert_equal 'O_o O_o', m.send(:protected_method) # sees that a method is already defined, so doesn't intervene assert_raises(NoMethodError) { m.private_method } assert_raises(NoMethodError) { m.protected_method } end test 'should not interfere with respond_to? if the attribute has a private/protected method' do m = ModelWithAttributes2.new m.attributes = { 'private_method' => '<3', 'protected_method' => 'O_o' } assert !m.respond_to?(:private_method) assert m.respond_to?(:private_method, true) # This is messed up, but it's how Ruby works at the moment. Apparently it will be changed # in the future. assert m.respond_to?(:protected_method) assert m.respond_to?(:protected_method, true) end test 'should use attribute_missing to dispatch a missing attribute' do m = ModelWithAttributes2.new m.attributes = { 'foo' => 'bar' } def m.attribute_missing(match, *args, &block) match end match = m.foo_test assert_equal 'foo', match.attr_name assert_equal 'attribute_test', match.target assert_equal 'foo_test', match.method_name end end