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4283c3e41e
R=sigmund@google.com Review URL: https://codereview.chromium.org//231413003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@34890 260f80e4-7a28-3924-810f-c04153c831b5
93 lines
2.7 KiB
Dart
93 lines
2.7 KiB
Dart
// Copyright (c) 2012, 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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library typed_arrays_dataview_test;
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import 'package:unittest/unittest.dart';
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import 'package:unittest/html_config.dart';
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import 'dart:html';
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import 'dart:typed_data';
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main() {
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useHtmlConfiguration();
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// Only perform tests if ArrayBuffer is supported.
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if (!Platform.supportsTypedData) {
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return;
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}
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test('create', () {
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var bd = new ByteData(100);
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expect(bd.lengthInBytes, 100);
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expect(bd.offsetInBytes, 0);
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var a1 = new Uint8List.fromList([1,2,3,4,5,6,7,8]);
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var bd2 = new ByteData.view(a1.buffer);
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expect(bd2.lengthInBytes, 8);
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expect(bd2.offsetInBytes, 0);
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var bd3 = new ByteData.view(a1.buffer, 2);
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expect(bd3.lengthInBytes, 6);
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expect(bd3.offsetInBytes, 2);
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var bd4 = new ByteData.view(a1.buffer, 3, 4);
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expect(bd4.lengthInBytes, 4);
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expect(bd4.offsetInBytes, 3);
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});
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test('access8', () {
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var a1 = new Uint8List.fromList([0,0,3,255,0,0,0,0,0,0]);
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var bd = new ByteData.view(a1.buffer, 2, 6);
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expect(bd.getInt8(0), equals(3));
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expect(bd.getInt8(1), equals(-1));
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expect(bd.getUint8(0), equals(3));
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expect(bd.getUint8(1), equals(255));
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bd.setInt8(2, -56);
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expect(bd.getInt8(2), equals(-56));
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expect(bd.getUint8(2), equals(200));
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bd.setUint8(3, 200);
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expect(bd.getInt8(3), equals(-56));
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expect(bd.getUint8(3), equals(200));
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});
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test('access16', () {
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var a1 = new Uint8List.fromList([0,0,3,255,0,0,0,0,0,0]);
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var bd = new ByteData.view(a1.buffer, 2);
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expect(bd.lengthInBytes, equals(10 - 2));
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expect(bd.getInt16(0), equals(1023));
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expect(bd.getInt16(0, Endianness.BIG_ENDIAN), equals(1023));
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expect(bd.getInt16(0, Endianness.LITTLE_ENDIAN), equals(-253));
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expect(bd.getUint16(0), equals(1023));
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expect(bd.getUint16(0, Endianness.BIG_ENDIAN), equals(1023));
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expect(bd.getUint16(0, Endianness.LITTLE_ENDIAN), equals(0xFF03));
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bd.setInt16(2, -1);
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expect(bd.getInt16(2), equals(-1));
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expect(bd.getUint16(2), equals(0xFFFF));
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});
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test('access32', () {
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var a1 = new Uint8List.fromList([0,0,3,255,0,0,0,0,0,0]);
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var bd = new ByteData.view(a1.buffer);
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expect(bd.getInt32(0), equals(1023));
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expect(bd.getInt32(0, Endianness.BIG_ENDIAN), equals(1023));
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expect(bd.getInt32(0, Endianness.LITTLE_ENDIAN), equals(-0xFD0000));
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expect(bd.getUint32(0), equals(1023));
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expect(bd.getUint32(0, Endianness.BIG_ENDIAN), equals(1023));
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expect(bd.getUint32(0, Endianness.LITTLE_ENDIAN), equals(0xFF030000));
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});
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}
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