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require 'cases/helper'
class ModelWithAttributes
include ActiveModel::AttributeMethods
class << self
define_method(:bar) do
'original bar'
end
end
def attributes
{ :foo => 'value of foo', :baz => 'value of baz' }
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 ModelWithRubyKeywordNamedAttributes
include ActiveModel::AttributeMethods
def attributes
{ :begin => 'value of begin', :end => 'value of end' }
end
private
def attribute(name)
attributes[name.to_sym]
end
end
class ModelWithoutAttributesMethod
include ActiveModel::AttributeMethods
end
class AttributeMethodsTest < ActiveModel::TestCase
test 'method missing works correctly even if attributes method is not defined' do
assert_raises(NoMethodError) { ModelWithoutAttributesMethod.new.foo }
end
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 works passing multiple arguments' do
ModelWithAttributes.define_attribute_methods(:foo, :baz)
assert_equal "value of foo", ModelWithAttributes.new.foo
assert_equal "value of baz", ModelWithAttributes.new.baz
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 '#alias_attribute works with attributes named as a ruby keyword' do
ModelWithRubyKeywordNamedAttributes.define_attribute_methods([:begin, :end])
ModelWithRubyKeywordNamedAttributes.alias_attribute(:from, :begin)
ModelWithRubyKeywordNamedAttributes.alias_attribute(:to, :end)
assert_equal "value of begin", ModelWithRubyKeywordNamedAttributes.new.from
assert_equal "value of end", ModelWithRubyKeywordNamedAttributes.new.to
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
class ClassWithProtected
protected
def protected_method
end
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)
c = ClassWithProtected.new
# This is messed up, but it's how Ruby works at the moment. Apparently it will be changed
# in the future.
assert_equal c.respond_to?(:protected_method), 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
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