Contents

# encoding: utf-8

require 'spec_helper'

describe Optimizer::Algebra::Rename::ReverseOperand, '#optimize' do
  subject { object.optimize }

  let(:base)     { Relation.new([[:id, Integer]], LazyEnumerable.new([[1]])) }
  let(:limit)    { base.sort_by { |r| r.id }.take(2)                         }
  let(:operand)  { limit.rename({}).reverse                                  }
  let(:relation) { operand.rename(id: :other_id)                             }
  let(:object)   { described_class.new(relation)                             }

  before do
    expect(object).to be_optimizable
  end

  it { should be_kind_of(Relation::Operation::Reverse) }

  its(:operand) { should eql(limit.rename(id: :other_id)) }

  its(:directions) { should == [relation[:other_id].desc] }
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
axiom-optimizer-0.2.0	spec/unit/axiom/optimizer/algebra/rename/reverse_operand/optimize_spec.rb
axiom-optimizer-0.1.1	spec/unit/axiom/optimizer/algebra/rename/reverse_operand/optimize_spec.rb