Fix skipWhile.

tests/lib/async/stream_controller_test.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // Test the basic StreamController and StreamController.singleSubscription.
 library stream_controller_test;
 
 import "package:expect/expect.dart";
 import 'dart:async';
 import 'event_helper.dart';
@@ skipping 342 matching lines @@
 
 
   c = new StreamController();
   expectedEvents = new Events()..add(3)..close();
   actualEvents = new Events.capture(c.stream.skipWhile((x) => x <= 2));
   sentEvents.replay(c);
   Expect.listEquals(expectedEvents.events, actualEvents.events);
 
 
   c = new StreamController();
+  expectedEvents = new Events()..add(2)..add(3)..close();
+  actualEvents = new Events.capture(c.stream.skipWhile((x) => x <= 1));
+  sentEvents.replay(c);
+  Expect.listEquals(expectedEvents.events, actualEvents.events);
+
+
+  c = new StreamController();
+  expectedEvents = new Events()..add(1)..add(2)..add(3)..close();
+  actualEvents = new Events.capture(c.stream.skipWhile((x) => false));
+  sentEvents.replay(c);
+  Expect.listEquals(expectedEvents.events, actualEvents.events);
+
+
+  c = new StreamController();
   expectedEvents = new Events()..add(1)..add(2)..close();
   actualEvents = new Events.capture(c.stream.take(2));
   sentEvents.replay(c);
   Expect.listEquals(expectedEvents.events, actualEvents.events);
 
 
   c = new StreamController();
   expectedEvents = new Events()..add(1)..add(2)..close();
   actualEvents = new Events.capture(c.stream.takeWhile((x) => x <= 2));
   sentEvents.replay(c);
@@ skipping 31 matching lines @@
   c.close();
   Expect.isTrue(c.isClosed);
 }
 
 main() {
   testMultiController();
   testSingleController();
   testExtraMethods();
   testClosed();
 }