contrived example to show that at_least(0) does not work

rspec_at_least_bug__spec.rb

# contrived example to show that at_least(0) does not work

require 'rspec/mocks'

class DevOps
  attr_reader :monitor
  
  def initialize
    @monitor = Monitor.new
  end
  
  def check
    monitor.ping('DS1')
  end

  def noop
  end
end

class Monitor
  def ping(name)
    "pong #{name}"
  end
end

describe DevOps do
  let(:devops) { DevOps.new }
  let(:proxy)  do
    mock = mock('Monitor')
    mock.should_receive(:ping).with('DS1').and_return(stub.as_null_object) 
    mock
  end

  # TODO: does not work
  # let(:proxy) { mock('Monitor').should_receive(:ping).with('DS1').and_return(stub.as_null_object) }

  # it "#monitor called" do
  #   # proxy is asserted even though it is not returned anywhere
  #   proxy = mock('Monitor').should_receive(:ping).with('DS1').and_return(stub.as_null_object)
  #   devops.should_receive(:monitor).and_return(stub.as_null_object)
  #   devops.check
  # end
  
  it "#monitor called", :wip => true do
    # DevOps.any_instance
    devops.should_receive(:monitor).and_return(proxy)
    devops.check
  end

  it "#monitor not called" do
    #DevOps.any_instance.should_receive(:monitor).any_number_of_times.and_return(proxy)
    # TODO: at_least(0) does not work
    devops.should_receive(:monitor).at_least(0).and_return(proxy)
    devops.noop
  end
end