Make getKeys, getValues getters (keys, values).

lib/core/expect.dart

 // Copyright (c) 2012, 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.
 
 /**
  * Expect is used for tests that do not want to make use of the
  * Dart unit test library - for example, the core language tests.
  * Third parties are discouraged from using this, and should use
  * the expect() function in the unit test library instead for
  * test assertions.
@@ skipping 113 matching lines @@
 
   /**
    * Checks that all [expected] and [actual] have the same set of keys (using
    * the semantics of [Map.containsKey] to determine what "same" means. For
    * each key, checks that the values in both maps are equal using `==`.
    */
   static void mapEquals(Map expected, Map actual, [String reason = null]) {
     String msg = _getMessage(reason);
 
     // Make sure all of the values are present in both and match.
-    for (final key in expected.getKeys()) {
+    for (final key in expected.keys) {
       if (!actual.containsKey(key)) {
         _fail('Expect.mapEquals(missing expected key: <$key>$msg) fails');
       }
 
       Expect.equals(expected[key], actual[key]);
     }
 
     // Make sure the actual map doesn't have any extra keys.
-    for (final key in actual.getKeys()) {
+    for (final key in actual.keys) {
       if (!expected.containsKey(key)) {
         _fail('Expect.mapEquals(unexpected key: <$key>$msg) fails');
       }
     }
   }
 
   /**
    * Specialized equality test for strings. When the strings don't match,
    * this method shows where the mismatch starts and ends.
    */
@@ skipping 128 matching lines @@
   }
 }
 
 typedef bool _CheckExceptionFn(exception);
 
 class ExpectException implements Exception {
   ExpectException(this.message);
   String toString() => message;
   String message;
 }