egonSchiele/contracts.ruby - issue #229

test.rb

require "contracts"

C = Contracts

module ModuleWithContracts
  def self.included(base)
    base.extend ClassMethods
  end

  module ClassMethods
    include Contracts::Core

    Contract C::None => String
    def foo
      "bar"
    end
  end
end

# this class works
class ContractsThenModule
  include Contracts::Core
  include ModuleWithContracts

  Contract C::Num => C::Num
  def double(x)
    x * 2
  end
end

# but this one, with the module included before the contracts, fails to compile
class ModuleThenContracts
  include ModuleWithContracts
  include Contracts::Core

  # fails on this line
  Contract C::Num => C::Num
  def double(x)
    x * 2
  end
end