New expectation functions plus convert old tests to use these.

tests/isolate/v2_unresolved_ports_negative_test.dart

Index: tests/isolate/v2_unresolved_ports_negative_test.dart
===================================================================
--- tests/isolate/v2_unresolved_ports_negative_test.dart	(revision 8345)
+++ tests/isolate/v2_unresolved_ports_negative_test.dart	(working copy)
@@ -27,10 +27,10 @@
   test('Message chain with unresolved ports', () {
     ReceivePort port = new ReceivePort();
     port.receive(expectAsync2((msg, _) {
-      expect(msg).equals('main says: Beth, find out if Tim is coming.'
+      expect(msg, equals('main says: Beth, find out if Tim is coming.'
         + '\nBeth says: Tim are you coming? And Bob?'
         + '\nTim says: Can you tell "main" that we are all coming?'
-        + '\nBob says: we are NOT coming!'); // should be 'all', not 'NOT'
+        + '\nBob says: we are NOT coming!')); // should be 'all', not 'NOT'
       port.close();
     }));