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TEST=ci Bug: Contributes to https://github.com/dart-lang/sdk/issues/49529 Change-Id: Ic129ef2d89f625d9ec6a7a1c301cffddd60b2ff7 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/258920 Reviewed-by: Lasse Nielsen <lrn@google.com> Commit-Queue: Michael Thomsen <mit@google.com> Reviewed-by: Slava Egorov <vegorov@google.com>
35 lines
884 B
Dart
35 lines
884 B
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// @dart = 2.9
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import "package:expect/expect.dart";
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main() {
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List list = [1, 2];
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list.add(list);
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List list2 = new List.filled(4, null);
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list2[0] = 1;
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list2[1] = 2;
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list2[2] = list2;
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list2[3] = list;
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Expect.equals("[1, 2, [...]]", list.toString());
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Expect.equals("[1, 2, [...], [1, 2, [...]]]", list2.toString());
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// Throwing in the middle of a toString does not leave the
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// list as being visited.
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List list3 = [1, 2, new ThrowOnToString(), 4];
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Expect.throws(list3.toString, (e) => e == "Bad!");
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list3[2] = 3;
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Expect.equals("[1, 2, 3, 4]", list3.toString());
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}
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class ThrowOnToString {
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String toString() {
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throw "Bad!";
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}
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}
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