LanguageFeatures/nnbd/weak/overriding/override_checking_A01_SETTER_t07.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 In an unmigrated library, override checking is done using legacy
 * types. This means that an unmigrated library can bring together otherwise
 * incompatible methods. When choosing the most specific signature during
 * interface computation, all nullability and requiredness annotations are
 * ignored, and the [Never] type is treated as [Null].
 *
 * @description Check that if legacy class implements opted-in class, legacy
 * setter can accept non-null values if corresponding parent setter is of
 * non-nullable type.
 *
 * @author iarkh@unipro.ru
 */
// Requirements=nnbd-weak
// @dart=2.6

import "dart:async";
import "../../../../Utils/expect.dart";
import "override_checking_A01_opted_in_lib.dart";

void testme1() {}

class A implements OPTED_NONNULLABLE_SETTER {
  void set setInt(int i)                   { Expect.equals(1, i); }
  void set setObject(Object o)             { Expect.equals(1, o); }
  void set setFunction(Function f)         { Expect.equals(testme1, f); }
  void set setFutureOrInt(FutureOr<int> i) { Expect.equals(1, i); }
}

main() {
  A a = A();

  a.setInt         = 1;
  a.setObject      = 1;
  a.setFutureOrInt = 1;
  a.setFunction    = testme1;
}