deprecate a ruby constant

a.rb

    def self.const_missing(const_name)
      if const_name == :FRAMEWORK_VERSION
        _deprecated('0.9.169', 'no replacement', :warn)
        return nil
      end
      raise(NameError, "uninitialized constant Calabash::Cucumber::#{const_name}")
    end

require 'spec_helper'

describe 'version module' do

  it 'should deprecate FRAMEWORK_VERSION cleanly' do
    expect(Calabash::Cucumber::FRAMEWORK_VERSION).to be == nil
  end

  it 'should handle non-defined constants with NameError' do
    expect{ Calabash::Cucumber::MISSING_CONSTANT }.to raise_error(NameError, 'uninitialized constant Calabash::Cucumber::MISSING_CONSTANT')
  end

end