test unit , running but no dots displayed

I am running my tests but I don't see the standard dots, only the
'started' and 'finished' info, any clue ? thanks for feedback

$ ruby -Itest test/unit/subdomain_test.rb -v p
Loaded suite test/unit/subdomain_test
Started
SubdomainTest:

Finished in 0.688173 seconds.

I am using the following gems in 'test' environment... nothing
fancy..

group :test do
  gem 'simplecov'
  gem 'ruby_parser'
  gem 'autotest-rails'
end

[Rails 3.2.6 / Ruby 1.9.3 / OSX 10.7.4]