# \[rails\] attaching the debugger to functional test **URL:** \ **Category:** ruby-talk\ **Created:** [30 October 2005 19:24 UTC](https://rubytalk.org/t/rails-attaching-the-debugger-to-functional-test/22024 "2005-10-30T19:24:10Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Dan\_Bikle1](https://avatars.discourse-cdn.com/v4/letter/d/e480ec/32.png) [@Dan\_Bikle1](https://rubytalk.org/u/Dan_Bikle1)\ **Post date:** [30 October 2005 19:24 UTC](https://rubytalk.org/t/rails-attaching-the-debugger-to-functional-test/22024/1 "2005-10-30T19:24:10Z")
People, I'm trying to run the ruby debugger against a Test::Unit::TestCase class which is a parent of a Rails class. I started my study with a simple script: > **···** > > # > # bikle\_test.rb > # > require 'test/unit' > > class BikleTest \< Test::Unit::TestCase >   def setup >     @string10 = "hello" >   end >   def test10 >     assert\_equal @string10, "hello" >   end > end > > The following command line works great: > > ruby -r debug bikle\_test.rb > > Next, I create a new rails application with this command line: > > rails rtest > > Then, I create a database.yml: > > test: >   adapter: sqlite3 >   dbfile: db/rtest.db > > Then I copied bikle\_test.rb to... > > rtest/test/functional/ > > I altered it a bit so it behaves like a typical Rails test: > > # > # bikle\_test.rb > # > require File.dirname(\_\_FILE\_\_) + '/../test\_helper' > > class BikleTest \< Test::Unit::TestCase >   def setup >     @string10 = "hello" >   end >   def test10 >     assert\_equal @string10, "hello" >   end > end > > When I run it, I see this: > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ ls > ./ ../ bikle\_test.rb > zmac11:/cd/railsdemos/rtest/test/functional oracle$ ruby b\* > Loaded suite bikle\_test > Started > . > Finished in 0.131351 seconds. > > 1 tests, 1 assertions, 0 failures, 0 errors > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > When I try to run it in the debugger I see this: > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ ruby -r debug b\* > Debug.rb > Emacs support available. > > bikle\_test.rb:1: > (rdb:1) l > [-4, 5] in bikle\_test.rb > =\> 1 require File.dirname(\_\_FILE\_\_) + '/../test\_helper' >    2 >    3 class BikleTest \< Test::Unit::TestCase >    4 def setup >    5 @string10 = "hello" >    6 end >    7 def test10 >    8 assert\_equal @string10, "hello" >    9 end >    10 end >    11 >    12 > (rdb:1) b 5 > Set breakpoint 1 at bikle\_test.rb:5 > (rdb:1) c > /opt/local/lib/ruby/1.8/drb/drb.rb:1572: `DRb::DRbServerNotFound' > (DRb::DRbServerNotFound) >   from /opt/local/lib/ruby/vendor\_ruby/1.8/rubygems/custom\_require.rb:21:in > `require' >   from /opt/local/lib/ruby/gems/1.8/gems/activesupport-1.2.1/lib/active\_support/dependencies.rb:213:in > `require' >   from /opt/local/lib/ruby/vendor\_ruby/1.8/rubygems.rb:182:in `activate' >   from /opt/local/lib/ruby/vendor\_ruby/1.8/rubygems.rb:181:in `each' >   from /opt/local/lib/ruby/vendor\_ruby/1.8/rubygems.rb:181:in `activate' >   from /opt/local/lib/ruby/vendor\_ruby/1.8/rubygems.rb:167:in `activate' >   from /opt/local/lib/ruby/vendor\_ruby/1.8/rubygems.rb:166:in `each' >   from /opt/local/lib/ruby/vendor\_ruby/1.8/rubygems.rb:166:in `activate' >   from /opt/local/lib/ruby/vendor\_ruby/1.8/rubygems/custom\_require.rb:26:in > `require' >   from /Users/oracle/CD/railsdemos/rtest/config/boot.rb:14 >   from /Users/oracle/CD/railsdemos/rtest/config/environment.rb:8:in `require' >   from /Users/oracle/CD/railsdemos/rtest/config/environment.rb:8 >   from ./../test\_helper.rb:2:in `require' >   from ./../test\_helper.rb:2 >   from bikle\_test.rb:1:in `require' >   from bikle\_test.rb:1 > /opt/local/lib/ruby/1.8/drb/drb.rb:1572: > (rdb:1) q > Really quit? (y/n) y > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > So, it's telling me that it is looking for a DRb Server. > > Question 1: > Why does it need to talk with a DRb Server? > > Outside of Rails... it does not need to talk with a DRb Server. > > Question 2: > How do I start a DRb Server which would make the debugger happy? > > I looked in the DT-PickAxe book and found this: > > # Sample code from Programing Ruby, page 399 > require 'drb' > > class TestServer >   def add(\*args) >     args.inject {|n,v| n + v} >   end > end > > server = TestServer.new > DRb.start\_service('druby://localhost:9000', server) > DRb.thread.join # Don't exit just yet! > > So, it looks like I give the server a port to listen on > which would be easy enough. > > But, how do I then tell the debugger what that port is? > > Can any of you offer any insight, solutions, or ideas to experiment with? > > Thanks, > > -Dan ---
**Author:** ![Eric\_Hodel1](https://avatars.discourse-cdn.com/v4/letter/e/a9adbd/32.png) [@Eric\_Hodel1](https://rubytalk.org/u/Eric_Hodel1)\ **Post date:** [30 October 2005 20:28 UTC](https://rubytalk.org/t/rails-attaching-the-debugger-to-functional-test/22024/2 "2005-10-30T20:28:28Z")
For Rails questions you'll get the best and fastest answers from the Rails mailing list: [http://lists.rubyonrails.org/mailman/listinfo/rails](http://lists.rubyonrails.org/mailman/listinfo/rails) > **···** > > On Oct 30, 2005, at 11:24 AM, Dan Bikle wrote: > > > People, > > > > I'm trying to run the ruby debugger against a Test::Unit::TestCase class > > which is a parent of a Rails class. > > -- > Eric Hodel - drbrain@segment7.net - [http://segment7.net](http://segment7.net) > FEC2 57F1 D465 EB15 5D6E 7C11 332A 551C 796C 9F04 ---
**Author:** ![Dan\_Bikle](https://avatars.discourse-cdn.com/v4/letter/d/41988e/32.png) [@Dan\_Bikle](https://rubytalk.org/u/Dan_Bikle)\ **Post date:** [14 November 2005 06:11 UTC](https://rubytalk.org/t/rails-attaching-the-debugger-to-functional-test/22024/3 "2005-11-14T06:11:17Z")
People, I got a good tip from the yahoo ba-rb group on this subject. The tip is to… ‘Ignore the error and just press c to continue’ the tip worked for me. -Dan > **···** > > On 10/30/05, Dan Bikle [dan.bikle-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org](mailto:dan.bikle-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org) wrote: > > > People, > > > > I’m trying to run the ruby debugger against a Test::Unit::TestCase class > > which is a parent of a Rails class. > > > > I started my study with a simple script: > > > > # > > > > # bikle\_test.rb > > > > # > > > > require ‘test/unit’ > > > > class BikleTest \< Test::Unit::TestCase > > def setup > > @string10 = “hello” > > end > > def test10 > > assert\_equal @string10, “hello” > > end > > end > > > > The following command line works great: > > > > ruby -r debug bikle\_test.rb > > > > Next, I create a new rails application with this command line: > > > > rails rtest > > > > Then, I create a database.yml: > > > > test: > > adapter: sqlite3 > > dbfile: db/rtest.db > > > > Then I copied bikle\_test.rb to… > > > > rtest/test/functional/ > > > > I altered it a bit so it behaves like a typical Rails test: > > > > # > > > > # bikle\_test.rb > > > > # > > > > require File.dirname( **FILE** ) + ‘/…/test\_helper’ > > > > class BikleTest \< Test::Unit::TestCase > > def setup > > @string10 = “hello” > > end > > def test10 > > assert\_equal @string10, “hello” > > end > > end > > > > When I run it, I see this: > > > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ ls > > ./ …/ bikle\_test.rb > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ ruby b\* > > Loaded suite bikle\_test > > Started > > . > > Finished in 0.131351 seconds. > > > > 1 tests, 1 assertions, 0 failures, 0 errors > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > > > When I try to run it in the debugger I see this: > > > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ ruby -r debug b\* > > Debug.rb > > Emacs support available. > > > > bikle\_test.rb:1: > > (rdb:1) l > > [-4, 5] in bikle\_test.rb > > =\> 1 require File.dirname( **FILE** ) + ‘/…/test\_helper’ > > 2 > > 3 class BikleTest \< Test::Unit::TestCase > > 4 def setup > > 5 @string10 = “hello” > > 6 end > > 7 def test10 > > 8 assert\_equal @string10, “hello” > > 9 end > > 10 end > > 11 > > 12 > > (rdb:1) b 5 > > Set breakpoint 1 at bikle\_test.rb:5 > > (rdb:1) c > > /opt/local/lib/ruby/1.8/drb/drb.rb:1572: `DRb::DRbServerNotFound' (DRb::DRbServerNotFound) from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:21:in `require’ > > from /opt/local/lib/ruby/gems/1.8/gems/activesupport-1.2.1/lib/active\_support/dependencies.rb:213:in > > `require' from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems.rb:182:in `activate’ > > from /opt/local/lib/ruby/vendor\_ruby/1.8/rubygems.rb:181:in `each' from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems.rb:181:in `activate’ > > from /opt/local/lib/ruby/vendor\_ruby/1.8/rubygems.rb:167:in `activate' from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems.rb:166:in `each’ > > from /opt/local/lib/ruby/vendor\_ruby/1.8/rubygems.rb:166:in `activate' from /opt/local/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:26:in `require’ > > from /Users/oracle/CD/railsdemos/rtest/config/boot.rb:14 > > from /Users/oracle/CD/railsdemos/rtest/config/environment.rb:8:in `require' from /Users/oracle/CD/railsdemos/rtest/config/environment.rb:8 from ./../test_helper.rb:2:in `require’ > > from ./…/test\_helper.rb:2 > > from bikle\_test.rb:1:in `require’ > > from bikle\_test.rb:1 > > /opt/local/lib/ruby/1.8/drb/drb.rb:1572: > > (rdb:1) q > > Really quit? (y/n) y > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > zmac11:/cd/railsdemos/rtest/test/functional oracle$ > > > > So, it’s telling me that it is looking for a DRb Server. > > > > Question 1: > > Why does it need to talk with a DRb Server? > > > > Outside of Rails… it does not need to talk with a DRb Server. > > > > Question 2: > > How do I start a DRb Server which would make the debugger happy? > > > > I looked in the DT-PickAxe book and found this: > > > > # Sample code from Programing Ruby, page 399 > > > > require ‘drb’ > > > > class TestServer > > def add(\*args) > > args.inject {|n,v| n + v} > > end > > end > > > > server = TestServer.new > > DRb.start\_service(‘druby://localhost:9000’, server) > > DRb.thread.join # Don’t exit just yet! > > > > So, it looks like I give the server a port to listen on > > which would be easy enough. > > > > But, how do I then tell the debugger what that port is? > > > > Can any of you offer any insight, solutions, or ideas to experiment with? > > > > Thanks, > > > > -Dan