LanguageFeatures/nnbd/Least-greatest-closure/class/class_static_t02.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 The definitions of least and greatest closure are changed in null
 * safe libraries to substitute [Never] in positions where previously [Null
 * would have been substituted, and [Object?] in positions where previously
 * [Object] or [dynamic] would have been substituted.
 * @description Check that [Object?] type is substituted for [Map<int, List<X>].
 * @note Read more about the least and greatest closure test template:
 * https://github.com/dart-lang/co19/issues/575#issuecomment-613542349
 *
 * @author iarkh@unipro.ru
 */

import "../../../../Utils/expect.dart";

void main() {
  void f<X>(Map<int, List<X>> Function() g) => g();

  // Verify that the captured type has an `x`.

  f(() => captureTypeArgument()..[0] = []);
  f(() => captureTypeArgument()..length);
  f(() => captureTypeArgument()..[0] = [null, "12345"]);

  f(() => captureTypeArgument()..x = 42);
  //                             ^
  // [analyzer] unspecified
  // [cfe] unspecified

  f(() => captureTypeArgument()..["abc"] = []);
  //                              ^^^^^
  // [analyzer] unspecified
  // [cfe] unspecified

  f(() => captureTypeArgument()..length);
}