mirror of
https://github.com/dart-lang/sdk
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07b9df22ac
No behavioral changes, just getting rid of a lot of redundant closures and helper functions. Change-Id: I55c52c2cc9e5505bb64203c31aad8d76847f8eeb Reviewed-on: https://dart-review.googlesource.com/14320 Commit-Queue: Bob Nystrom <rnystrom@google.com> Reviewed-by: William Hesse <whesse@google.com>
54 lines
1.7 KiB
Dart
54 lines
1.7 KiB
Dart
// Copyright (c) 2011, 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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// Check that arrays from const array literals are immutable.
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import "package:expect/expect.dart";
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class ListLiteral3Test {
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static const List<String> canonicalJoke = const ["knock", "knock"];
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static testMain() {
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List<String> joke = const ["knock", "knock"];
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// Elements of canonical lists are canonicalized.
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Expect.identical(joke, canonicalJoke);
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Expect.identical(joke[0], joke[1]);
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Expect.identical(joke[0], canonicalJoke[0]);
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// Lists from literals are immutable.
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Expect.throwsUnsupportedError(() => joke[0] = "sock");
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Expect.identical(joke[0], joke[1]);
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// Make sure lists allocated at runtime are mutable and are
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// not canonicalized.
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List<String> lame_joke = ["knock", "knock"]; // Invokes operator new.
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Expect.identical(joke[1], lame_joke[1]);
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// Operator new creates a mutable list.
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Expect.equals(false, identical(joke, lame_joke));
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lame_joke[1] = "who";
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Expect.identical("who", lame_joke[1]);
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// Elements of canonical lists are canonicalized.
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List<List<int>> a = const <List<int>>[
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const [1, 2],
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const [1, 2]
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];
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Expect.identical(a[0], a[1]);
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Expect.identical(a[0][0], a[1][0]);
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Expect.throwsUnsupportedError(() => a[0][0] = 42);
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List<List<double>> b = const [
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const [1.0, 2.0],
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const [1.0, 2.0]
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];
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Expect.identical(b[0], b[1]);
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Expect.equals(true, b[0][0] == 1.0);
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Expect.identical(b[0][0], b[1][0]);
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Expect.throwsUnsupportedError(() => b[0][0] = 42.0);
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}
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}
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main() {
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ListLiteral3Test.testMain();
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}
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