// 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.

// @dart = 2.9

/// @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}];      //# 01: compile-time error
  List l2 = [1, 2, ...i];      //# 02: compile-time error
  List l3 = [14, ...str, 28];  //# 03: compile-time error

  List l4 = [...?{1: 11}];     //# 04: compile-time error
  List l5 = [1, 2, ...?i];     //# 05: compile-time error
  List l6 = [14, ...?str, 28]; //# 06: compile-time error
}