* Test the transaction on a non-prevalent system.
*/
public void testExecuteOn()
{
// Setup variables
SyndFeedSystem system = new SyndFeedSystem();
system.insertFeed("one", new SyndFeedImpl());
system.insertFeed("two", new SyndFeedImpl());
system.insertFeed("three", new SyndFeedImpl());
deleteSyndFeeds = new DeleteSyndFeeds();
// Positive test
deleteSyndFeeds.executeOn(system, new Date());
assertTrue("All feeds must be deleted", system.isEmpty());
}