| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| /// @assertion int getUint8(int byteOffset) |
| /// Returns the positive integer represented by the byte at the specified |
| /// [byteOffset] in this object, in unsigned binary form. |
| /// The return value will be between 0 and 255, inclusive. |
| /// @description Checks that the correct value is returned. |
| /// @author msyabro |
| |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| var u8 = new Uint8List.fromList( |
| [0, 255, 128, 127, 12, 54, 100, 23, 98, 200, 43, 15, 3]); |
| var u32 = new Uint32List.fromList( |
| [0x62e7a17b, 0xf7ec7100, 0xe7180101, 0x1f83ccbb]); |
| int bytesInElement = Uint8List.bytesPerElement; |
| |
| var byteDataFromU8 = new ByteData.view(u8.buffer); |
| for (int i = 0; i < byteDataFromU8.lengthInBytes / bytesInElement; ++i) { |
| Expect.equals(u8[i], byteDataFromU8.getUint8(i)); |
| } |
| |
| var byteDataFromU32 = new ByteData.view(u32.buffer); |
| var expected = [ |
| 123, 161, 231, 98, 0, 113, 236, 247, 1, 1, 24, 231, 187, 204, 131, 31 |
| ]; |
| for (int i = 0; i < byteDataFromU32.lengthInBytes / bytesInElement; ++i) { |
| Expect.equals(expected[i], byteDataFromU32.getUint8(i)); |
| } |
| } |