LanguageFeatures/nnbd/late_A03_t02.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 A read of a field or variable which is marked as late which has
/// not yet been written to causes the initializer expression of the variable to
/// be evaluated to a value, assigned to the variable or field, and returned as
/// the value of the read.
/// ...
/// Evaluating the initializer expression may validly cause a write to the field
/// or variable, assuming that the field or variable is not final. In this case,
/// the variable assumes the written value. The final value of the initializer
/// expression overwrites any intermediate written values.
///
/// @description Check that evaluating the initializer expression may validly
/// cause a write to the field or variable, assuming that the field or variable
/// is not final. In this case, the variable assumes the written value. The final
/// value of the initializer expression overwrites any intermediate written
/// values.
/// @author sgrekhov@unipro.ru

// Requirements=nnbd-strong
import "../../Utils/expect.dart";

class C {
  static String initS(String val1, String val2) {
    s = val1;
    return val2;
  }
  static late String? s = initS("No woman", "no cry");

  covariant late String? v1 = initV1("No woman", "no cry");
  late String? v2 = initV2("No woman", "no cry");

  initV1(String val1, String val2) {
    v1 = val1;
    return val2;
  }

  initV2(String val1, String val2) {
    v2 = val1;
    return val2;
  }
}

late String? g = initG("No woman", "no cry");

initG(String val1, String val2) {
  g = val1;
  return val2;
}

main() {
  Expect.equals("no cry", C.s);
  Expect.equals("no cry", g);
  C c = new C();
  Expect.equals("no cry", c.v1);
  Expect.equals("no cry", c.v2);
}