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// 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.
/// @assertion T operator [](Object object)
/// Gets the value of this Expando's property on the given object. If the object
/// hasn't been expanded, the method returns null.
/// The object must not be a number, a string, a boolean or null.
/// @description Checks that this operator returns null for a freshly expanded
/// object(s).
/// @author rodionov
import "../../../Utils/expect.dart";
class A {}
class B extends A {}
main() {
Expando exp = new Expando("exp");
var o1 = new Object();
var o2 = new A();
var o3 = new B();