Hi,
Using the below method mention the below mail, I was successfully able to run and debug the script.
But when I run unittest class, the flow goes into testcase case class as below.

Testscript 
require "test/unit"
 
class TestSimpleNumber < Test::Unit::TestCase
 
  def test_simple
    assert_equal("abc", "abc" )
    
  end
 
  def test_typecheck
    assert_equal("abc", "abc" )
  end
 
  def test_failure
    assert_equal("abc", "abc" )
  end
 
End



Execution:


C:\ruby>ruby  -rubygems -rdebug  unittest.rb
Debug.rb
Emacs support available.

unittest.rb:1:require "test/unit"
(rdb:1) b 6
Set breakpoint 1 at unittest.rb:6
(rdb:1) cont
Loaded suite unittest
Started
.Breakpoint 1, test_simple at unittest.rb:6
unittest.rb:6:    assert_equal("abc", "abc" )
(rdb:1) n
c:/ruby/lib/ruby/1.8/test/unit/testcase.rb:85:          begin
(rdb:1) n
c:/ruby/lib/ruby/1.8/test/unit/testcase.rb:86:            teardown
(rdb:1) n
c:/ruby/lib/ruby/1.8/test/unit/testcase.rb:94:        result.add_run
(rdb:1) n
c:/ruby/lib/ruby/1.8/test/unit/testcase.rb:95:        yield(FINISHED, name)
(rdb:1) n
c:/ruby/lib/ruby/1.8/test/unit/ui/testrunnermediator.rb:47:            notify_listeners(channel, value)
(rdb:1)


Please help me in this regard.

Thanks,
Anil kumar.


>-----Original Message-----
>From: b.candler / pobox.com [mailto:b.candler / pobox.com] 
>Sent: 31 March, 2009 12:14
>To: ruby-talk ML
>Subject: Re: REG: How can we debug a ruby script
>
>Something in your environment is making ruby do -rubygems (require
>'rubygems')
>Perhaps the RUBYOPT environment variable is set, because I can 
>replicate your problem like this:
>
>$ export RUBYOPT=-rubygems
>$ ruby -rdebug fact.rb
>Debug.rb
>Emacs support available.
>
>/usr/local/lib/site_ruby/1.8/ubygems.rb:10:require 'rubygems'
>(rdb:1)
>
>So if this is the case, solution 1 is simply to unset the 
>RUBYOPT variable.
>
>Solution 2 is to set a breakpoint at the start of your program.
>
>$ ruby -rdebug fact.rb
>Debug.rb
>Emacs support available.
>
>/usr/local/lib/site_ruby/1.8/ubygems.rb:10:require 'rubygems'
>(rdb:1) b fact.rb:1
>Set breakpoint 1 at fact.rb:1
>(rdb:1) cont
>Breakpoint 1, toplevel at fact.rb:1
>fact.rb:1:def fact(n)
>(rdb:1) n
>fact.rb:9:print fact(2), "\n"
>(rdb:1) n
>2
>$
>
>Solution 3 is to require rubygems *before* requiring debug, 
>because when it has been required once, it won't be required again:
>
>$ ruby -rubygems -rdebug fact.rb
>Debug.rb
>Emacs support available.
>
>fact.rb:1:def fact(n)
>(rdb:1)
>
>This third one probably involves the least work.
>--
>Posted via http://www.ruby-forum.com/.
>