title: How do I execute a single test using Ruby test/unit?
body: <p>Instead of running all the test cases automatically, is there any way to execute a single test under ruby test/unit framework. I know I can achieve that by using Rake but I am not ready to switch to rake at this moment. </p>
  
  <pre><code>ruby unit_test.rb  #this will run all the test case
  ruby unit_test.rb test1 #this will only run test1
  </code></pre>