Sha256: a47a992ad89cf9a92ae10469cea7e5a9e58daf2f2e50abc36c455dbee47d31f8

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Size: 367 Bytes

Versions: 4

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Stored size: 367 Bytes

Contents

# encoding: utf-8

require 'spec_helper'

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

  let(:object) { described_class.instance }

  it_should_behave_like 'an idempotent method'

  it { should equal(Function::Proposition::Contradiction.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/tautology/inverse_spec.rb
veritas-0.0.6 spec/unit/veritas/function/proposition/tautology/inverse_spec.rb
veritas-0.0.5 spec/unit/veritas/function/proposition/tautology/inverse_spec.rb
veritas-0.0.4 spec/unit/veritas/function/proposition/tautology/inverse_spec.rb