LanguageFeatures/Spread-collections/StaticSemantic_A10_t05.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 It is a compile-time error if:
 * A spread element in a list or set literal has a static type that is not
 * dynamic and not a subtype of Iterable<Object>.
 * @description Checks that compile error is thrown if spread element in the
 * constant list is not assignable to [Iterable]
 * @author iarkh@unipro.ru
 */

main() {
  const x1 = {1: 1};
  const x2 = 100;
  const x3 = "check";
  const x4 = null;

  const List l1 = [...x1];
// [error line 21, column 0]
// [analyzer] unspecified
// [cfe] unspecified
  const List l2 = [...x2];
// [error line 25, column 0]
// [analyzer] unspecified
// [cfe] unspecified
  const List l3 = [...x3];
// [error line 29, column 0]
// [analyzer] unspecified
// [cfe] unspecified
  const List l4 = [...x4];
  //              ^
  // [cfe] Constant evaluation error:
  //                  ^^
  // [analyzer] COMPILE_TIME_ERROR.CONST_SPREAD_EXPECTED_LIST_OR_SET
}