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b101a7d002
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
35 lines
821 B
Dart
35 lines
821 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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void main() {
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Map m = new Map();
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m[0] = 0;
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m[1] = 1;
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m[2] = m;
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Expect.equals('{0: 0, 1: 1, 2: {...}}', m.toString());
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// Throwing in the middle of a toString does not leave the
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// map as being visited
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ThrowOnToString err = new ThrowOnToString();
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m[1] = err;
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Expect.throws(m.toString, (e) => e == "Bad!");
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m[1] = 1;
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Expect.equals('{0: 0, 1: 1, 2: {...}}', m.toString());
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m[err] = 1;
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Expect.throws(m.toString, (e) => e == "Bad!");
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m.remove(err);
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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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