Contents

# encoding: utf-8

require 'spec_helper'

describe Optimizer::Function::Predicate::Enumerable::EmptyRightOperand, '#optimizable?' do
  subject { object.optimizable? }

  let(:described_class) { Class.new(Optimizer::Function::Predicate)  }
  let(:attribute)       { Attribute::Integer.new(:id, :size => 1..9) }
  let(:predicate)       { attribute.include(operand)                 }
  let(:object)          { described_class.new(predicate)             }

  before do
    described_class.class_eval { include Optimizer::Function::Predicate::Enumerable::EmptyRightOperand }

    predicate.should be_kind_of(Function::Predicate::Enumerable)
  end

  context 'when the operand contains a nil' do
    let(:operand) { nil }

    it { should be(true) }
  end

  context 'when the operand contains an empty Enumerable' do
    let(:operand) { [] }

    it { should be(true) }
  end

  context 'when the operand contains an empty inclusive Range' do
    let(:operand) { 1..0 }

    it { should be(true) }
  end

  context 'when the operand contains an empty exclusive Range' do
    let(:operand) { 1...1 }

    it { should be(true) }
  end

  context 'when the operand is empty after filtering invalid entries' do
    let(:operand) { [ 'a' ] }

    it { should be(true) }
  end

  context 'when the operand contains an not empty Enumerable' do
    let(:operand) { [ 1 ] }

    it { should be(false) }
  end

  context 'when the operand contains an not empty inclusive Range' do
    let(:operand) { 1..1 }

    it { should be(false) }
  end

  context 'when the operand contains an not empty exclusive Range' do
    let(:operand) { 1...2 }

    it { should be(false) }
  end

  context 'when the operand is not empty after filtering invalid entries' do
    let(:operand) { [ 'a', 1 ] }

    it { should be(false) }
  end

  context 'when the operand contains a Range outside of the allowed values' do
    let(:operand) { 10..100 }

    it { should be(true) }
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
veritas-optimizer-0.0.7	spec/unit/veritas/optimizer/function/predicate/enumerable/empty_right_operand/optimizable_spec.rb
veritas-optimizer-0.0.6	spec/unit/veritas/optimizer/function/predicate/enumerable/empty_right_operand/optimizable_spec.rb
veritas-optimizer-0.0.5	spec/unit/veritas/optimizer/function/predicate/enumerable/empty_right_operand/optimizable_spec.rb
veritas-optimizer-0.0.4	spec/unit/veritas/optimizer/function/predicate/enumerable/empty_right_operand/optimizable_spec.rb