NoMethodError：未定义的方法`lookup＆＃39;对于Puppet：模块

Question

我的rspec-puppet单元测试存在一些问题。我不断收到以下错误。我已经包含了我的木偶类清单和规格测试。我使用http://rspec-puppet.com/上的说明设置了测试环境。错误如下。

木偶清单

# Cups class for stopping and disabling cups
class cups {

  service { 'cupsd':
    ensure => stopped,
    enable => false,
  }
}

规范测试

require "#{File.join(File.dirname(__FILE__),'..','spec_helper.rb')}"

describe 'cups' do
  it { should contain_service('cupsd').with_ensure('stopped') }
  it { should contain_service('cupsd').with_enable('false') }
end

故障：

  1) cups cups service
    Failure/Error: it { should contain_service('cupsd').with_ensure('stopped') }
     NoMethodError:
      undefined method `lookup' for Puppet:Module
      # ./spec/classes/cups_spec.rb:6:in `block (3 levels) in <top (required)>'

 2) cups cups service
    Failure/Error: it { should contain_service('cupsd').with_enable('false') }
     NoMethodError:
      undefined method `lookup' for Puppet:Module
      # ./spec/classes/cups_spec.rb:7:in `block (3 levels) in <top (required)>'