# encoding: utf-8

require 'spec_helper'

describe Relation::Operation::Offset, '#hash' do
  subject { object.hash }

  let(:relation) { Relation.new([[:id, Integer]], [[1], [2], [3]]) }
  let(:operand)  { relation.sort_by { |r| r.id }                   }
  let(:offset)   { 1                                               }
  let(:object)   { described_class.new(operand, offset)            }

  it_should_behave_like 'a hash method'

  it { should == described_class.hash ^ operand.hash ^ offset.hash }
end