From: Brian Candler <b.candler@...>
Date: 2009-03-30T19:55:48+09:00
Subject: Re: testy.rb - ruby testing that's mad at the world

Bil Kleb wrote:
> Sounds like you're pining for Python's doctest?
> 
>   http://docs.python.org/library/doctest.html

Ah, now that's a really interesting way of thinking about 
examples/testing: in the form of an irb session. You can write your 
tests just by mucking about in irb, and when it makes sense, just paste 
the output somewhere.

  irb> foo = generate_foo
  => #<Foo:0xb7cd041c @attr1="hello", @attr2="world">
  irb> foo.attr1
  => "hello"
  irb> foo.attr2
  => "world"

Presumably you could avoid the fragile comparison on Object#inspect 
output by deleting it from the transcript.

  irb> foo = generate_foo
  ...
  irb> foo.attr1
  => "hello"
  irb> foo.attr2
  => "world"

Writing something which parses that an (re)runs it to verify the output 
should be pretty straightforward.

It can also handle the 'assert_raises' case nicely.

  irb> f.attr3
  NoMethodError: undefined method `attr3' for ...

Ara, how about it? :-)
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