title: Difference com.sun.jersey and org.glassfish.jersey
body: <p>What is the difference between <code>com.sun.jersey</code> and <code>org.glassfish.jersey</code>?</p>
  
  <p>Currently I have my REST service working on <code>com.sun.jersey</code> and I want to write tests, but I can't find a good tutorial for this (nothing seems to work). However, I can find good documentation about the <code>org.glassfish.jersey</code> tests.</p>