LanguageFeatures/nnbd/weak/exports_A01_functions_t03.dart

/*
 * Copyright (c) 2020, 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 If an unmigrated library re-exports a migrated library, the
 * re-exported symbols retain their migrated status (that is, downstream
 * migrated libraries will see their migrated types).
 * @description Check that if function with non-nullable argument is exported
 * from opted-in library to legacy library and then back to the opted in code,
 * it retains its status and can accept non-null arguments.
 * @author iarkh@unipro.ru
 */
// Requirements=nnbd-weak

import "dart:async";
import "../../../Utils/expect.dart";
import "exports_A01_opted_out_lib.dart";

main() {
  Expect.isTrue(test_int_arg is void Function(int));
  test_int_arg(1);

  Expect.isTrue(test_object_arg is void Function(Object));
  test_object_arg(1);

  Expect.isTrue(test_function_arg is void Function(Function));
  test_function_arg(testme);

  Expect.isTrue(test_futureOrInt_arg is void Function(FutureOr<int>));
  test_futureOrInt_arg(1);
}