LanguageFeatures/Spread-collections/ConstSpreads_A03_t02.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.

// @dart = 2.9

/// @assertion It is a compile-time error to use a spread element in a constant
/// list or set unless the spread object was created by a constant list or set
/// literal expression.
/// @description Checks that compile error is thrown if spread element is not a
/// constant list or set literal in the constant set
/// @author iarkh@unipro.ru


main() {
  List list1 = [2, 7, 9];
  Set list2 = {"checkme"};
  List list3 = [];
  List list4 = null;
  int i = 7;

  const res1 =  {...list1};                                       //# 01: compile-time error
  const res2 =  {...?list1};                                      //# 02: compile-time error
  const res3 =  {...list2};                                       //# 03: compile-time error
  const res4 =  {...?list2};                                      //# 04: compile-time error
  const res5 =  {...list3};                                       //# 05: compile-time error
  const res6 =  {...?list3};                                      //# 06: compile-time error
  const res7 =  {...?list4};                                      //# 07: compile-time error
  const res8 =  {1, 2, ...list1, 6};                              //# 08: compile-time error
  const res9 =  {1, ...list1, ...list2, ...list3, ...?list4, 18}; //# 09: compile-time error
  const res10 = {...list1, ...[2]};                               //# 10: compile-time error
  const res11 = {1, ...list1, ...[1, 4]};                         //# 11: compile-time error
  const res12 = {...[2, 3, 2], i};                                //# 12: compile-time error
  const res13 = {1, ...list1, 1};                                 //# 13: compile-time error

}