public class DatabaseTest { 
 Database d; 
 @Before 
 public void setUpObject(){ 
  d = new Database(); 
  d.addItem(new Album("Abbey Road",...)); 
  d.addItem(new Video("Titanic",...)); 
 } 
 
 @Test 
 public void addVideoNumber(){ 
  d.addItem(new Video("Your Name",...); 
  Assert.assertEquals(d.numItems(),3); 
 } 

 @Test 
 public void removeBadTitle(){ 
  try{ 
   d.removeItem("Yeezus"); 
   Assert.fail("Expected exception"); 
  } catch (ItemNotFoundException e){ return; } 
 } 
}