lrn@google.com
dd31afbeca
Based on ListIterable implementation that should be reusable for a lot of our existing length/indexing-based iterables too. Review URL: https://codereview.chromium.org//12261009 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@18506 260f80e4-7a28-3924-810f-c04153c831b5
45 lines
1.3 KiB
Dart
45 lines
1.3 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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main() {
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test(String s) {
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Iterable<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(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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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, 0xd800, 61, 0xd800, 0xdc00, 62, 0xdc00, 0xd800]);
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test(string);
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// Setting position in the middle of a surrogate pair is not allowed.
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var r = new CodeUnits("\u{10000}");
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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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