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rails--rails/activemodel/test/cases/attribute_methods_test.rb

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require 'cases/helper'
class ModelWithAttributes
include ActiveModel::AttributeMethods
attribute_method_suffix ''
def attributes
{ :foo => 'value of foo' }
end
private
def attribute(name)
attributes[name.to_sym]
end
end
class ModelWithAttributes2
include ActiveModel::AttributeMethods
attribute_method_suffix '_test'
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_methods generates attribute methods' do
ModelWithAttributes.define_attribute_methods([:foo])
assert ModelWithAttributes.attribute_methods_generated?
assert ModelWithAttributes.new.respond_to?(:foo)
assert_equal "value of foo", ModelWithAttributes.new.foo
end
test '#undefine_attribute_methods removes attribute methods' do
ModelWithAttributes.define_attribute_methods([:foo])
ModelWithAttributes.undefine_attribute_methods
assert !ModelWithAttributes.attribute_methods_generated?
assert !ModelWithAttributes.new.respond_to?(:foo)
assert_raises(NoMethodError) { ModelWithAttributes.new.foo }
end
end