| // Copyright (c) 2011, 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 factory List.from(Iterable other, {bool growable: true}) |
| /// Creates an list with the elements of other. |
| /// The order in the list will be the order provided by the iterator of other. |
| /// The returned list is growable if growable is true, otherwise it's a fixed |
| /// length list. |
| /// @description Checks that proper list with correct element order is created. |
| /// @author vasya |
| |
| import "../../../Utils/expect.dart"; |
| |
| void checkEquals(Iterable expected, List actual) { |
| Expect.equals(expected.length, actual.length); |
| Iterator it = expected.iterator; |
| var i = 0; |
| while (it.moveNext()) { |
| Object? o = it.current; |
| Expect.identical(actual[i], o); |
| Expect.isTrue(actual[i] == o); |
| i++; |
| } |
| } |
| |
| main() { |
| Set<int> s = new Set<int>(); |
| List a = new List.from(s); |
| Expect.equals(0, a.length); |
| Expect.equals(0, s.length); |
| |
| for (var i = 0; i < 10; i++){ |
| s.add(i); |
| } |
| a = new List.from(s); |
| checkEquals(s, a); |
| |
| List l = new List.empty(growable: true); |
| a = new List.from(l); |
| Expect.equals(0, a.length); |
| Expect.equals(0, l.length); |
| |
| l.addAll(["1", "2", "3", "4", "5"]); |
| a = new List.from(l); |
| checkEquals(l, a); |
| |
| List src = [null, [null], [], [1, 2, 3], [[null]]]; |
| a = new List.from(src); |
| checkEquals(src, a); |
| |
| src = new List.filled(34567, 0); |
| src[34566] = -111111111; |
| a = new List.from(src); |
| checkEquals(src, a); |
| } |