ruby default

default.rb

class Object
  def default(value)
    self
  end
end

class NilClass
  def default(value)
    value
  end
end

default_spec.rb

require 'default'

describe 'Default' do
  it "returns origin value if available" do
    'origin'.default('default').should == 'origin'
  end

  it "returns delaut value unless origin available" do
    nil.default('default').should == 'default'
  end
end