LanguageFeatures/nnbd/null_aware_operator_A08_t03.dart

/*
 * Copyright (c) 2019, 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 The assignment e1?.f = e2 translates to:
 *  SHORT[EXP(e1), fn[x] => x.f = EXP(e2)]
 *
 * @description Check that a property access e?.f translates to:
 *  SHORT[EXP(e), fn[x] => x.f]. Test type aliases
 * @static-warning
 * @author sgrekhov@unipro.ru
 */
// SharedOptions=--enable-experiment=non-nullable,nonfunction-type-aliases
import "../../Utils/expect.dart";

class A {
  String test = "No woman";
}

typedef AAlias1 = A?;
typedef AAlias2 = A;

main() {
  AAlias1 a1 = null;
  Expect.isNull(a1?.test = "no cry");
  Expect.isNull(a1);
  a1 = new A();
  Expect.equals("no cry", a1?.test = "no cry");
  Expect.equals("no cry", a1?.test);

  AAlias2 a2 = new A();
  Expect.equals("no cry", a2?.test = "no cry");    /// static type warning
  Expect.equals("no cry", a2.test);
}