Test Case for a Feature receiver

Scenario:
You want to write a test case for the Feature Receiver

Sample Feature Code:

namespace TrainingSamples
{
    public class SampleFeatureReceiver:SPFeatureReceiver
    {

        [SharePointPermission(SecurityAction.LinkDemand, ObjectModel = true)]
        public override void FeatureActivated(SPFeatureReceiverProperties properties)
        {
            if (properties == null)
            {
                return;
            }

             SPWeb web = (SPWeb)properties.Feature.Parent;
              this.OnActivationCode(web);
        }

        public void OnActivationCode(SPWeb web)
        {
            //Code
           
        }
    }
}

Sample Test Case Code:

namespace TrainingSamples
{
        [TestMethod()]
        public void FeatureRecieverOnActivationTest()
        {
            SampleFeatureReceiver target = new SampleFeatureReceiver();

            SPSite site;
            SPWeb web;
            //Bind to the site where you are testing provisioning code.

            site = new  SPSite("http://servername");
            using (site)
            {
                web = site.RootWeb;
                using (web)
                {
                    target.OnActivationCode(web);
               }
            }

            Assert.IsTrue(true,
              "Feature Activation did not throw any exceptions.");
        }
    }
}