Contents

# encoding: utf-8

require 'spec_helper'

describe Optimizer::Algebra::Projection::ProjectionOperand, '#optimize' do
  subject { object.optimize }

  let(:header)   { Relation::Header.coerce([[:id, Integer], [:name, String], [:age, Integer]]) }
  let(:base)     { Relation.new(header, LazyEnumerable.new([[1, 'Dan Kubb', 35]]))             }
  let(:relation) { base.project([:id, :name]).project([:id])                                   }
  let(:object)   { described_class.new(relation)                                               }

  before do
    expect(object).to be_optimizable
  end

  it { should be_kind_of(Algebra::Projection) }

  its(:operand) { should be(base) }

  its(:header) { should == [header[:id]] }
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
axiom-optimizer-0.2.0	spec/unit/axiom/optimizer/algebra/projection/projection_operand/optimize_spec.rb
axiom-optimizer-0.1.1	spec/unit/axiom/optimizer/algebra/projection/projection_operand/optimize_spec.rb