public void Clear_ClearsCollection()
      {
         FilterCollection<int> filters = new FilterCollection<int>();
         Filter<int> filter = new Mock<Filter<int>>().Object;

         filters.Clear();

         Assert.IsTrue(filters.IsEmpty());
         Assert.IsFalse(filters.Contains(filter));
      }
 public void Constructor_NoParams_InitializesEmptyCollection()
 {
    FilterCollection<int> filters = new FilterCollection<int>();
    Assert.IsTrue(filters.IsEmpty());
 }