LanguageFeatures/Spread-collections/StaticSemantic_A02_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 This is true even if the object being spread is a user-defined
 * class that implements [Iterable] but isn't even a subtype of List.
 * @description Checks that compile error appears if list spread element does
 * not extends [Iterable].
 * @author iarkh@unipro.ru
 */

main() {
  int i = 1;
  String str = "abs";
  List l1 = [...{1: 11}];
  //            ^^^^^^^
  // [analyzer] COMPILE_TIME_ERROR.NOT_ITERABLE_SPREAD
  // [cfe] Both Iterable and Map spread elements encountered in ambiguous literal.
  List l2 = [1, 2, ...i];
  //                  ^
  // [analyzer] COMPILE_TIME_ERROR.NOT_ITERABLE_SPREAD
  // [cfe] Unexpected type 'int' of a spread.  Expected 'dynamic' or an Iterable.
  List l3 = [14, ...str, 28];
  //                ^^^
  // [analyzer] COMPILE_TIME_ERROR.NOT_ITERABLE_SPREAD
  // [cfe] Unexpected type 'String' of a spread.  Expected 'dynamic' or an Iterable.

  int? i1 = i;
  String? str1 = str;
  List l4 = [...?({1: 11} as Map?)];
  //             ^^^^^^^^^^^^^^^^^
  // [analyzer] COMPILE_TIME_ERROR.NOT_ITERABLE_SPREAD
  //                      ^
  // [cfe] Unexpected type 'Map<dynamic, dynamic>?' of a spread.  Expected 'dynamic' or an Iterable.
  List l5 = [1, 2, ...?i1];
// [error line 37, column 0]
// [analyzer] unspecified
// [cfe] unspecified
  List l6 = [14, ...?str1, 28];
// [error line 41, column 0]
// [analyzer] unspecified
// [cfe] unspecified
}