Contents

require 'spec_helper'

describe 'Veritas::Optimizer::Algebra::Rename::SetOperand#optimize' do
  subject { object.optimize }

  let(:klass)    { Optimizer::Algebra::Rename::SetOperand            }
  let(:header)   { Relation::Header.new([ [ :id, Integer ] ])        }
  let(:left)     { Relation.new(header, [ [ 1 ] ].each)              }
  let(:right)    { Relation.new(header, [ [ 2 ] ].each)              }
  let(:relation) { left.union(right).rename(:id => :other_id)        }
  let(:object)   { klass.new(relation)                               }

  before do
    object.operation.should be_kind_of(Algebra::Rename)
    object.operand.should be_kind_of(Relation::Operation::Set)
  end

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

  its(:left) { should eql(left.rename(:id => :other_id)) }

  its(:right) { should eql(right.rename(:id => :other_id)) }
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
veritas-0.0.2	spec/unit/veritas/optimizer/algebra/rename/set_operand/optimize_spec.rb
veritas-0.0.1	spec/unit/veritas/optimizer/algebra/rename/set_operand/optimize_spec.rb