Mark Expect as deprecated.

corelib/src/expect.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.
 
+/** Expect is deprecated. Use expect() in the unit test library instead. */

[Bob Nystrom, 2012/06/06 22:08:09]

Expect isn't deprecated for use in the language and co19 tests. Those tests
can't rely on the ability to run the unittest library. Clarify that here?

 class Expect {
 
   /**
    * Checks whether the expected and actual values are equal (using [:==:]).
    */
   static void equals(var expected, var actual, [String reason = null]) {
     if (expected == actual) return;
     String msg = _getMessage(reason);
     _fail("Expect.equals(expected: <$expected>, actual: <$actual>$msg) fails.");
   }
@@ skipping 264 matching lines @@
   }
 }
 
 typedef bool _CheckExceptionFn(exception);
 
 class ExpectException implements Exception {
   ExpectException(this.message);
   String toString() => message;
   String message;
 }