# File lib/mocha/mock.rb, line 294
    def method_missing(symbol, *arguments, &block)
      if @responder && !@responder.respond_to?(symbol)
        raise NoMethodError, "undefined method `#{symbol}' for #{mocha_inspect} which responds like #{@responder.mocha_inspect}"
      end
      if (matching_expectation_allowing_invocation = all_expectations.match_allowing_invocation(symbol, *arguments))
        matching_expectation_allowing_invocation.invoke(&block)
      elsif (matching_expectation = all_expectations.match(symbol, *arguments)) || (!matching_expectation && !@everything_stubbed)
        if @unexpected_invocation.nil?
          @unexpected_invocation = UnexpectedInvocation.new(self, symbol, *arguments)
          matching_expectation.invoke(&block) if matching_expectation
          message = @unexpected_invocation.full_description
          message << @mockery.mocha_inspect
        else
          message = @unexpected_invocation.short_description
        end
        raise ExpectationErrorFactory.build(message, caller)
      end
    end