Contents

require 'spec_helper'

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

  let(:klass)     { Optimizer::Algebra::Restriction::SetOperand }
  let(:header)    { Relation::Header.new([ [ :id, Integer ] ])  }
  let(:left)      { Relation.new(header, [ [ 1 ] ].each)        }
  let(:right)     { Relation.new(header, [ [ 2 ] ].each)        }
  let(:predicate) { header[:id].eq(1)                           }
  let(:relation)  { left.union(right).restrict(predicate)       }
  let(:object)    { klass.new(relation)                         }

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

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

  its(:left) { should eql(left.restrict(predicate)) }

  its(:right) { should eql(right.restrict(predicate)) }
end

Version data entries

2 entries across 2 versions & 1 rubygems

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