Language/Expressions/Type_Test/evaluation_t02.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.

/**
 * @assertion Evaluation of the is-expression e is T proceeds as follows:
 * The expression e is evaluated to a value v.
 * Then, if T is malformed or deferred type, a dynamic error occurs.
 * Otherwise, if the interface of the class of v is a subtype of T, the
 * is-expression evaluates to true.
 * Otherwise it evaluates to false.
 * @description Checks that type annotations does not affect the result of the
 * is-expression.
 * @author msyabro
 */
import '../../../Utils/expect.dart';

main() {
  int? x;
  Expect.isFalse(x is int);
  String? s;
  Expect.isFalse(s is String);
  bool? b;
  Expect.isFalse(b is bool);
}