class Spec::Matchers::Have

def matches?(collection_owner)
  if collection_owner.respond_to?(@collection_name)
    collection = collection_owner.__send__(@collection_name, *@args, &@block)
  elsif (@plural_collection_name && collection_owner.respond_to?(@plural_collection_name))
    collection = collection_owner.__send__(@plural_collection_name, *@args, &@block)
  elsif (collection_owner.respond_to?(:length) || collection_owner.respond_to?(:size))
    collection = collection_owner
  else
    collection_owner.__send__(@collection_name, *@args, &@block)
  end
  @actual = collection.size if collection.respond_to?(:size)
  @actual = collection.length if collection.respond_to?(:length)
  raise not_a_collection if @actual.nil?
  return @actual >= @expected if @relativity == :at_least
  return @actual <= @expected if @relativity == :at_most
  return @actual == @expected
end