RSpec attr accessor check

should_have_attr_accessor.rb

RSpec::Matchers.define :have_attr_accessor do |field|
  match do |klass|
    klass.respond_to?(field) && klass.respond_to?("#{field}=")
  end

  failure_message do |klass|
    "expected attr_accessor for #{field} on #{klass}"
  end

  failure_message_when_negated do |klass|
    "expected attr_accessor for #{field} not to
        be defined on #{klass}"
  end

  description do
    'checks to see if there is an attr accessor on the supplied object'
  end
end

spec_helper.rb

# NOTE: Store your matcher files in spec/custom/matchers/ and require them in spec/spec_helper.rb with the following line:
Dir[File.dirname(__FILE__) + "/custom/**/*.rb"].each {|f| require f}