Contents

# encoding: utf-8

require 'spec_helper'

describe Function::Proposition::Contradiction, '#inverse' do
  subject { object.inverse }

  let(:object) { described_class.instance }

  it_should_behave_like 'an idempotent method'

  it { should equal(Function::Proposition::Tautology.instance) }

  it 'is invertible' do
    subject.inverse.should equal(object)
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
veritas-0.0.7	spec/unit/veritas/function/proposition/contradiction/inverse_spec.rb
veritas-0.0.6	spec/unit/veritas/function/proposition/contradiction/inverse_spec.rb
veritas-0.0.5	spec/unit/veritas/function/proposition/contradiction/inverse_spec.rb
veritas-0.0.4	spec/unit/veritas/function/proposition/contradiction/inverse_spec.rb