LanguageFeatures/Spread-collections/StaticSemantic_A04_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.
 */
/**
 * @assertion It is a static error if:
 *    A spread element in a list or set literal has a static type that is not
 *    assignable to Iterable<Object>.
 * @description Checks that compile error is thrown if spread element in set
 * literal is not assignable to [Iterate<Object>]
 * @author iarkh@unipro.ru
 */

main() {
  var number = 1;
  var str = "checkme";
  var map = {1: 1, 2: 2};
  var list = [1, 2, 3, 4, 5];

  Set l1 = <dynamic>{...number};
  //                    ^^^^^^
  // [analyzer] COMPILE_TIME_ERROR.NOT_ITERABLE_SPREAD
  // [cfe] Unexpected type 'int' of a spread.  Expected 'dynamic' or an Iterable.
  Set l2 = <dynamic>{...str};
  //                    ^^^
  // [analyzer] COMPILE_TIME_ERROR.NOT_ITERABLE_SPREAD
  // [cfe] Unexpected type 'String' of a spread.  Expected 'dynamic' or an Iterable.
  Set l3 = <dynamic>{...map};
  //                    ^^^
  // [analyzer] COMPILE_TIME_ERROR.NOT_ITERABLE_SPREAD
  // [cfe] Unexpected type 'Map<int, int>' of a spread.  Expected 'dynamic' or an Iterable.
  Set l4 = <dynamic>{...list[0]};
  //                    ^^^^^^^
  // [analyzer] COMPILE_TIME_ERROR.NOT_ITERABLE_SPREAD
  //                        ^
  // [cfe] Unexpected type 'int' of a spread.  Expected 'dynamic' or an Iterable.

  Set l5 = <dynamic>{...?number};
// [error line 39, column 0]
// [analyzer] unspecified
// [cfe] unspecified
  Set l6 = <dynamic>{...?str};
// [error line 43, column 0]
// [analyzer] unspecified
// [cfe] unspecified
  Set l7 = <dynamic>{...?map};
// [error line 47, column 0]
// [analyzer] unspecified
// [cfe] unspecified
  Set l8 = <dynamic>{...?list[0]};
// [error line 51, column 0]
// [analyzer] unspecified
// [cfe] unspecified
}