Failing spec for citeproc-ruby: Variables used only in conditionals inside of names->substitions are suppressed

names_substitions_suppression_spec.rb

# -*- coding: utf-8 -*-

require 'spec_helper'

module CiteProc
  module Ruby

    describe "Renderer#render_names" do
      let(:renderer) { Renderer.new }

      let(:node) { CSL::Style::Names.new }

      let(:item) {
        i = CiteProc::CitationItem.new(:id => 'ID-1')
        i.data = CiteProc::Item.new(:id => 'ID-1')
        i
      }

      let(:poe) { people(:poe) }
      let(:philosophers) { CiteProc::Names.new('Plato and Socrates and Aristotle') }

      describe "proper suppression of variables used in substitutions" do
        before(:each) do
          item.data[:type] = 'magazine-article'
          item.data[:title] = 'My Article'
          item.data[:"container-title"] = 'My Magazine'
          item.data[:publisher] = 'Random House'
        end

        it "Use of variable in a conditional in a used substitution entry should not suppress that variable from being output later on" do
          name_sub = ::CSL::Style::Substitute.new()
          ifb1 =  ::CSL::Style::Choose.new()
          if1 = ::CSL::Style::Choose::Block.new(:variable=>"container-title", :match=>"any")
          if1 << ::CSL::Style::Text.new(:variable=>'title', :quotes=>'true')
          else1 = ::CSL::Style::Choose::Block.new
          else1 << ::CSL::Style::Text.new(:variable=>'title', :"font-style"=>'italic')
          ifb1 << if1
          ifb1 << else1
          name_sub << ifb1
          node << name_sub

          renderer.render_group(item, node)
          expect(item.suppressed?(:"title")).to eq(true)
          expect(item.suppressed?(:"container-title")).to eq(false)
        end
      end
    end
  end
end