class RSpec::Mocks::AnyInstance::Chain

def constrained_to_any_of?(*constraints)
  constraints.any? do |constraint|
    messages.any? do |message|
      message.first.first == constraint
    end
  end
end

def expectation_fulfilled!
  @expectation_fulfilled = true
end

def initialize(*args, &block)
  @expectation_args  = args
  @expectation_block = block
end

def last_message
  messages.last.first.first unless messages.empty?
end

def messages
  @messages ||= []
end

def negated?
  messages.any? { |(message, *_), _| message.to_sym == :never }
end

def never
  ErrorGenerator.raise_double_negation_error("expect_any_instance_of(MyClass)") if negated?
  super
end

def playback!(instance)
  message_expectation = create_message_expectation_on(instance)
  messages.inject(message_expectation) do |object, message|
    object.__send__(*message.first, &message.last)
  end
end

def record(rspec_method_name, *args, &block)
  verify_invocation_order(rspec_method_name, *args, &block)
  messages << [args.unshift(rspec_method_name), block]
  self
end