# encoding: utf-8

require 'spec_helper'

describe Relation::Keys, '#rename' do
  subject { object.rename(aliases) }

  let(:object)  { described_class.coerce([ header1, header2 ])               }
  let(:header1) { [ [ :id, Integer ] ]                                       }
  let(:header2) { [ [ :name, String ] ]                                      }
  let(:aliases) { Algebra::Rename::Aliases.coerce(header1, :id => :other_id) }

  it { should be_instance_of(described_class) }

  it { should == [ [ [ :other_id, Integer ] ], header2 ] }
end