New expectation functions plus convert old tests to use these.

samples/tests/samples/lib/util/util_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.
 
 #library('util_tests');
 
 #import('dart:html');
 #import('../../../../../lib/unittest/unittest.dart');
 #import('../../../../../lib/unittest/html_config.dart');
 #import('../../../../ui_lib/util/utilslib.dart');
 
 main() {
   useHtmlConfiguration();
   test('insertAt', () {
     var a = [];
     CollectionUtils.insertAt(a, 0, 1);
-    expect(a).equalsCollection([1]);
+    expect(a, orderedEquals([1]));
 
     CollectionUtils.insertAt(a, 0, 2);
-    expect(a).equalsCollection([2, 1]);
+    expect(a, orderedEquals([2, 1]));
 
     CollectionUtils.insertAt(a, 0, 5);
     CollectionUtils.insertAt(a, 0, 4);
     CollectionUtils.insertAt(a, 0, 3);
-    expect(a).equalsCollection([3, 4, 5, 2, 1]);
+    expect(a, orderedEquals([3, 4, 5, 2, 1]));
 
     a = [];
     CollectionUtils.insertAt(a, 0, 1);
-    expect(a).equalsCollection([1]);
+    expect(a, orderedEquals([1]));
 
     CollectionUtils.insertAt(a, 1, 2);
-    expect(a).equalsCollection([1, 2]);
+    expect(a, orderedEquals([1, 2]));
 
     CollectionUtils.insertAt(a, 1, 3);
     CollectionUtils.insertAt(a, 3, 4);
     CollectionUtils.insertAt(a, 3, 5);
-    expect(a).equalsCollection([1, 3, 2, 5, 4]);
+    expect(a, orderedEquals([1, 3, 2, 5, 4]));
   });
 
   test('defaultString', () {
-    expect(StringUtils.defaultString(null)).equals('');
-    expect(StringUtils.defaultString('')).equals('');
-    expect(StringUtils.defaultString('test')).equals('test');
+    expect(StringUtils.defaultString(null), isEmpty);
+    expect(StringUtils.defaultString(''), isEmpty);
+    expect(StringUtils.defaultString('test'), equals('test'));
   });
 }