blob: ac19147b05591c4bf7d9250af7c3919ae95fd92f [file] [log] [blame]
// 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 Queue.from(Iterable elements)
/// Creates a queue containing all elements.
/// The element order in the queue is as if the elements were added using
/// [addLast] in the order provided by [elements.iterator].
/// @description Checks that created list contains all elements of [elements] in
/// the same order.
/// @author msyabro
import "../../../Utils/expect.dart";
import "dart:collection";
void check(Queue l, Iterable c) {
Expect.isTrue(l.length == c.length);
c.forEach((var element) {
Expect.isTrue(l.removeFirst() == element);
});
}
main() {
Queue list = new Queue.from([1, 2, 3, 4, 5]);
check(list, [1, 2, 3, 4, 5]);
Set set = new Set.from([1, 2, 3, 4, 5]);
list = new Queue.from(set);
check(list, set);
Queue tmp = new Queue();
tmp.addLast(1);
tmp.addLast(2);
list = new Queue.from(tmp);
check(list, tmp);
list = new Queue.from(new Queue());
check(list, []);
list = new Queue.from([tmp, tmp, set]);
check(list, [tmp, tmp, set]);
list = new Queue.from(new Set());
check(list, []);
}