# encoding: utf-8 require 'spec_helper' describe Optimizer::Function::Predicate::ConstantOperands, '#optimize' do subject { object.optimize } let(:predicate) { Function::Predicate::Equality.new(1, 1) } let(:object) { described_class.new(predicate) } before do object.should be_optimizable end it { should equal(Function::Proposition::Tautology.instance) } end