blob: f9833bde5d23e03be721516b53e34ea9fb4c6698 [file] [log] [blame] [edit]
// Copyright (c) 2013, 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.
import "package:expect/expect.dart";
import "dart:collection";
void main() {
Set s = new HashSet();
s.add(1);
Expect.equals("{1}", s.toString());
s.remove(1);
s.add(s);
Expect.equals("{{...}}", s.toString());
Queue q = new ListQueue(4);
q.add(1);
q.add(2);
q.add(q);
q.add(s);
Expect.equals("{1, 2, {...}, {{...}}}", q.toString());
// Throwing in the middle of a toString does not leave the
// set as being visited
q.addLast(new ThrowOnToString());
Expect.throws(q.toString, (e) => e == "Bad!");
q.removeLast();
Expect.equals("{1, 2, {...}, {{...}}}", q.toString());
}
class ThrowOnToString {
String toString() {
throw "Bad!";
}
}