mirror of
https://github.com/dart-lang/sdk
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6f6b1f8818
Deprecated option --null-safety still remains in order to allow graceful migration. Fixes https://github.com/dart-lang/sdk/issues/41853 Change-Id: Ie47b1bebc9dd6532658a60743ecb85dc7fdc108c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/153660 Reviewed-by: Siva Annamalai <asiva@google.com> Reviewed-by: Régis Crelier <regis@google.com> Commit-Queue: Alexander Markov <alexmarkov@google.com>
65 lines
2 KiB
Dart
65 lines
2 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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import "package:expect/expect.dart";
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import 'dart:collection';
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class MyList extends ListBase {
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List list;
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MyList(this.list);
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get length => list.length;
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set length(val) {
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list.length = val;
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}
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operator [](index) => list[index];
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operator []=(index, val) => list[index] = val;
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String toString() => "[" + join(", ") + "]";
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}
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// l1 must be a modifiable list with 5 elements from 0 to 4.
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void testModifiableList(l1) {
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// Index must be integer and in range.
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Expect.throwsRangeError(() => l1.removeAt(-1), "negative");
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Expect.throwsRangeError(() => l1.removeAt(5), "too large");
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Expect.throws(() => l1.removeAt(null),
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// With sound null safety a TypeError is thrown.
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// Without sound null safety an ArgumentError is thrown.
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(e) => e is TypeError || e is ArgumentError, "is null");
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Expect.equals(2, l1.removeAt(2), "l1-remove2");
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Expect.equals(1, l1[1], "l1-1[1]");
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Expect.equals(3, l1[2], "l1-1[2]");
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Expect.equals(4, l1[3], "l1-1[3]");
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Expect.equals(4, l1.length, "length-1");
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Expect.equals(0, l1.removeAt(0), "l1-remove0");
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Expect.equals(1, l1[0], "l1-2[0]");
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Expect.equals(3, l1[1], "l1-2[1]");
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Expect.equals(4, l1[2], "l1-2[2]");
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Expect.equals(3, l1.length, "length-2");
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}
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void main() {
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// Normal modifiable list.
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testModifiableList([0, 1, 2, 3, 4]);
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testModifiableList(new MyList([0, 1, 2, 3, 4]));
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// Fixed size list.
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var l2 = new List<int?>.filled(5, null);
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for (var i = 0; i < 5; i++) l2[i] = i;
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Expect.throwsUnsupportedError(() => l2.removeAt(2), "fixed-length");
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// Unmodifiable list.
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var l3 = const [0, 1, 2, 3, 4];
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Expect.throwsUnsupportedError(() => l3.removeAt(2), "unmodifiable");
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// Empty list is not special.
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var l4 = [];
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Expect.throwsRangeError(() => l4.removeAt(0), "empty");
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}
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