`@' 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.

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