Robert Nystrom
0906af6d2f
I also regenerated the static error expectations (see #57042 for context). Change-Id: Ia0ca22604a0dd422cc265a46845afc43f551fe38 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/394572 Commit-Queue: Lasse Nielsen <lrn@google.com> Reviewed-by: Lasse Nielsen <lrn@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com>
94 lines
2.6 KiB
Dart
94 lines
2.6 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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main() {
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test(String s) {
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List<int> units = s.codeUnits;
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List<int> expectedUnits = <int>[];
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for (int i = 0; i < s.length; i++) {
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expectedUnits.add(s.codeUnitAt(i));
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}
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Expect.equals(s.length, units.length);
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for (int i = 0; i < s.length; i++) {
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Expect.equals(s.codeUnitAt(i), units.elementAt(i));
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}
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// for-in
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var res = [];
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for (int unit in units) {
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res.add(unit);
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}
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Expect.listEquals(expectedUnits, res);
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// .map
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Expect.listEquals(
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expectedUnits.map((x) => x.toRadixString(16)).toList(),
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units.map((x) => x.toRadixString(16)).toList(),
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);
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if (s == "") {
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Expect.throwsStateError(() => units.first);
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Expect.throwsStateError(() => units.last);
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Expect.throwsRangeError(() => units[0]);
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Expect.throwsUnsupportedError(() => units[0] = 499);
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Expect.listEquals([], units.sublist(0, 0));
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Expect.equals(-1, units.indexOf(42));
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Expect.equals(-1, units.lastIndexOf(499));
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} else {
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Expect.equals(s.codeUnitAt(0), units.first);
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Expect.equals(s.codeUnitAt(s.length - 1), units.last);
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Expect.equals(s.codeUnitAt(0), units[0]);
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Expect.throwsUnsupportedError(() => units[0] = 499);
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List<int> sub = units.sublist(1);
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Expect.listEquals(s.substring(1, s.length).codeUnits, sub);
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Expect.equals(-1, units.indexOf(-1));
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Expect.equals(0, units.indexOf(units[0]));
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Expect.equals(-1, units.lastIndexOf(-1));
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Expect.equals(
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units.length - 1,
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units.lastIndexOf(units[units.length - 1]),
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);
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}
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Iterable reversed = units.reversed;
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int i = units.length - 1;
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for (int codeUnit in reversed) {
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Expect.equals(units[i--], codeUnit);
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}
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}
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test("");
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test("abc");
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test("\x00\u0000\u{000000}");
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test("\u{ffff}\u{10000}\u{10ffff}");
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String string = new String.fromCharCodes([
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0xdc00,
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0xd800,
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61,
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0xd9ab,
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0xd9ab,
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0xddef,
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0xddef,
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62,
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0xdc00,
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0xd800,
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]);
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test(string);
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string =
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"\x00\x7f\xff\u0100\ufeff\uffef\uffff"
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"\u{10000}\u{12345}\u{1d800}\u{1dc00}\u{1ffef}\u{1ffff}";
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test(string);
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// Reading each unit of a surrogate pair works.
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var r = "\u{10000}".codeUnits;
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var it = r.iterator;
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Expect.isTrue(it.moveNext());
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Expect.equals(0xD800, it.current);
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Expect.isTrue(it.moveNext());
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Expect.equals(0xDC00, it.current);
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}
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