     import flashx.textLayout.debug.assert;
 
     import mx.collections.ArrayCollection;
+    import mx.collections.IList;
     import mx.logging.ILogger;
     import mx.logging.Log;
     import mx.logging.targets.TraceTarget;
 
     import org.flexunit.asserts.assertEquals;
     import org.flexunit.asserts.assertFalse;
+    import org.flexunit.asserts.assertTrue;
 
     public class TestStream
     {

            verify(array.collection, original);
            verify(array.list, original);


            var collection:Stream = $(new ArrayCollection([1, 2, 3]));
            assertEquals(collection.empty, false);

            assertEquals(ne1[1], 3);
        }

        [Test]
        public function testOr():void
        {
            var or1:Stream = $(1, 2, 3).filter(or(eq(1), eq(3)));
            assertEquals(or1.length, 2);
            assertEquals(or1[0], 1);
            assertEquals(or1[1], 3);
        }

        [Test]
        public function testAnd():void
        {
            var and1:Stream = $(1, 2, 3).filter(and(gt(1), lt(3)));
            assertEquals(and1.length, 1);
            assertEquals(and1[0], 2);
        }

        [Test]
        public function testLe():void
