`@' is not allowed as an instance variable name under ruby 2.0.0-rc2

[kpolitowicz]

     Failure/Error: it { should have_scope :expiring, :where => "date_expired IS NOT NULL" }
     `@' is not allowed as an instance variable name
     # /usr/local/opt/rbenv/versions/2.0.0-rc2/lib/ruby/gems/2.0.0/gems/remarkable-4.0.0.alpha4/lib/remarkable/core/dsl/assertions.rb:402:in `instance_variable_get'
     # /usr/local/opt/rbenv/versions/2.0.0-rc2/lib/ruby/gems/2.0.0/gems/remarkable-4.0.0.alpha4/lib/remarkable/core/dsl/assertions.rb:402:in `matches_collection_assertions?'
     # /usr/local/opt/rbenv/versions/2.0.0-rc2/lib/ruby/gems/2.0.0/gems/remarkable-4.0.0.alpha4/lib/remarkable/core/dsl/assertions.rb:291:in `matches?'
     # /usr/local/opt/rbenv/versions/2.0.0-rc2/lib/ruby/gems/2.0.0/gems/rspec-expectations-2.12.0/lib/rspec/expectations/handler.rb:23:in `handle_matcher'
     # /usr/local/var/lib/rbenv/versions/2.0.0-rc2/lib/ruby/gems/2.0.0/gems/rspec-core-2.12.1/lib/rspec/core/subject.rb:64:in `should'
     # ./spec/models/activity_file_spec.rb:20:in `block (2 levels) in <top (required)>'

[ccallebs]

@kpolitowicz Were you ever able to pin down this issue?

[kpolitowicz]

Not really. Since the project seems dead, I will be probably replacing it with something else long-term. For now, as scopes are the only thing that breaks under ruby 2.0, I'm gonna just write my own scope matcher.

[ghost]

The problem is that it's trying to set an instance variable called "@". You just need this somewhere in your spec load path:

module Remarkable
  module DSL
    module Assertions
      def matches_collection_assertions? #:nodoc:
        arguments  = self.class.matcher_arguments
        assertions = self.class.matcher_collection_assertions
        collection = self.class.matcher_arguments[:collection] ? instance_variable_get("@#{self.class.matcher_arguments[:collection]}") : []

        assert_collection(nil, collection) do |value|
          instance_variable_set("@#{arguments[:as]}", value)
          send_methods_and_generate_message(assertions)
        end
      end
    end
  end
end