Test Wont Run

[dwaonsolo]

Hello, My test wont run at all, everytime i try to do a test the
following error comes up

dwain@ubuntu:~/Documents/stuad$ ruby test/unit/product_test.rb
/home/dwain/Documents/stuad/config/boot.rb:29:Warning: require_gem is
obsolete. Use gem instead.
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/
active_support/dependencies.rb:250:in `load_missing_constant':
Expected /home/dwain/Documents/stuad/config/../vendor/plugins/selenium-
on-rails/selenium-on-rails/lib/selenium_on_rails.rb to define
SeleniumOnRails (LoadError)
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/
active_support/dependencies.rb:453:in `const_missing'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/
active_support/dependencies.rb:465:in `const_missing'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/
active_support/dependencies.rb:261:in `load_missing_constant'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/
active_support/dependencies.rb:469:in `const_missing'
from /home/dwain/Documents/stuad/config/../vendor/plugins/selenium-on-
rails/selenium-on-rails/lib/controllers/selenium_controller.rb:4
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:
27:in `gem_original_require'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:
27:in `require'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/
active_support/dependencies.rb:496:in `require'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/
active_support/dependencies.rb:343:in `new_constants_in'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/
active_support/dependencies.rb:496:in `require'
from /home/dwain/Documents/stuad/config/../vendor/plugins/selenium-on-
rails/selenium-on-rails/init.rb:7:in `load_plugin'
from /usr/local/lib/ruby/gems/1.8/gems/rails-1.2.1/lib/initializer.rb:
401:in `load_plugin'
from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/
active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'
from /usr/local/lib/ruby/gems/1.8/gems/rails-1.2.1/lib/initializer.rb:
401:in `load_plugin'
from /usr/local/lib/ruby/gems/1.8/gems/rails-1.2.1/lib/initializer.rb:
185:in `load_plugins'
from /usr/local/lib/ruby/gems/1.8/gems/rails-1.2.1/lib/initializer.rb:
185:in `each'
from /usr/local/lib/ruby/gems/1.8/gems/rails-1.2.1/lib/initializer.rb:
185:in `load_plugins'
from /usr/local/lib/ruby/gems/1.8/gems/rails-1.2.1/lib/initializer.rb:
105:in `process'
from /usr/local/lib/ruby/gems/1.8/gems/rails-1.2.1/lib/initializer.rb:
43:in `send'
from /usr/local/lib/ruby/gems/1.8/gems/rails-1.2.1/lib/initializer.rb:
43:in `run'
from /home/dwain/Documents/stuad/config/environment.rb:13
from ./test/unit/../test_helper.rb:2:in `require'
from ./test/unit/../test_helper.rb:2
from test/unit/product_test.rb:1:in `require'
from test/unit/product_test.rb:1

Can some one sort out this problem please?
thanks