Contents

require 'spec_helper'
require 'combinatorics/derange/cardinality'

describe Derange do
  subject { Derange }

  it "should alias cardinality to subfactorial" do
    should respond_to(:cardinality)
  end

  it "should wrap subfactorial with Derange.D" do
    should respond_to(:D)
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
combinatorics-0.4.4	spec/derange/cardinality_spec.rb
combinatorics-0.4.3	spec/derange/cardinality_spec.rb
combinatorics-0.4.1	spec/derange/cardinality_spec.rb