From: dblack@...
Date: 2006-08-30T06:02:26+09:00
Subject: Re: Test::Unit::TestCase not resolving correctly

Hi --

On Wed, 30 Aug 2006, dkmd_nielsen@hotmail.com wrote:

> In the assignment of the class variable value, the first assert_equal

s/class variable/instance variable/

> test case appears to be comparing the expected value to the input of
> the class variable assignment...not the value returned by the
> assigment.

An assignment returns its right-hand side.  This rule applies even to
pseudo-assignment method calls:

   class C
     attr_reader :x
     def x=(y)
       @x = 100
     end
   end

   c = C.new
   p c.x = 1   # prints 1, not 100
   p c.x       # prints 100

The idea is to make the assignment-like method calls truly
assignment-like.


David

-- 
                   David A. Black | dblack@wobblini.net
Author of "Ruby for Rails"   [1] | Ruby/Rails training & consultancy [3]
DABlog (DAB's Weblog)        [2] | Co-director, Ruby Central, Inc.   [4]
[1] http://www.manning.com/black | [3] http://www.rubypowerandlight.com
[2] http://dablog.rubypal.com    | [4] http://www.rubycentral.org