Contents

# encoding: utf-8

require 'spec_helper'

describe Optimizer::Algebra::Summarization::EmptySummarizePer, '#optimizable?' do
  subject { object.optimizable? }

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

  before do
    expect(object.operation).to be_kind_of(Algebra::Summarization)
  end

  context 'when the summarize_per is empty' do
    let(:summarize_per) { base.project([:id]).restrict { false } }

    it { should be(true) }
  end

  context 'when the summarize_per is not empty' do
    let(:summarize_per) { base.project([:id]) }

    it { should be(false) }
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
axiom-optimizer-0.2.0	spec/unit/axiom/optimizer/algebra/summarization/empty_summarize_per/optimizable_predicate_spec.rb
axiom-optimizer-0.1.1	spec/unit/axiom/optimizer/algebra/summarization/empty_summarize_per/optimizable_predicate_spec.rb