From: Jean-Hugues ROBERT <jean_hugues_robert@...>
Date: 2004-06-05T05:51:44+09:00
Subject: Re: Check assertion in Ruby

At 03:41 05/06/2004 +0900, you wrote:
>On Sat, Jun 05, 2004 at 03:34:47AM +0900, Edgardo Hames wrote:
>> Hi, everybody. I would like to use an assert like function to test the 
>> number of rows returned by a query. Something like Eiffel's
>> 
>> check result.num_rows = 1
>>
>> What's the best way to do that in Ruby?
>
>  def check
>    raise "check failed" unless yield
>  end
>
>
>  check { result.num_rows == 1 }
>
>Regards,
>
>  Michael 


if DEBUG
  def assert
    raise "assertion failure" unless yield
  end
else
  def assert; end
end

There is some overhead when not in DEBUG mode, but that
is the best you can do in Ruby as far as I know.

Yours,

Jean-Hugues



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