public void Remove_filter_removes_and_notifies()
{
FilterStore store = new FilterStore();
BlockFilter filter = store.CreateBlockFilter(1);
store.SaveFilter(filter);
bool hasNotified = false;
store.FilterRemoved += (s, e) => hasNotified = true;
store.RemoveFilter(0);
Assert.True(hasNotified, "notied");
Assert.False(store.FilterExists(0), "exists");
}