| // Copyright (c) 2015, 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. |
| // VMOptions=--error_on_bad_type --error_on_bad_override |
| |
| import 'package:observatory/object_graph.dart'; |
| import 'package:unittest/unittest.dart'; |
| import 'dart:typed_data'; |
| |
| testRoundTrip(final int n) { |
| var bytes = []; |
| var remaining = n; |
| while (remaining > 127) { |
| bytes.add(remaining & 127); |
| remaining = remaining >> 7; |
| } |
| bytes.add(remaining + 128); |
| |
| print("Encoded $n as $bytes"); |
| |
| var typedBytes = new ByteData.view(new Uint8List.fromList(bytes).buffer); |
| var stream = new ReadStream([typedBytes]); |
| stream.readUnsigned(); |
| |
| expect(stream.isZero, equals(n == 0)); |
| |
| expect(stream.low, equals((n >> 0) & 0xFFFFFFF)); |
| expect(stream.mid, equals((n >> 28) & 0xFFFFFFF)); |
| expect(stream.high, equals((n >> 56) & 0xFFFFFFF)); |
| |
| const kMaxUint32 = (1 << 32) - 1; |
| if (n > kMaxUint32) { |
| expect(stream.clampedUint32, equals(kMaxUint32)); |
| } else { |
| expect(stream.clampedUint32, equals(n)); |
| } |
| |
| expect(stream.position, equals(bytes.length)); |
| } |
| |
| main() { |
| const kMaxUint64 = (1 << 64) - 1; |
| |
| var n = 3; |
| while (n < kMaxUint64) { |
| testRoundTrip(n); |
| n <<= 1; |
| } |
| |
| n = 5; |
| while (n < kMaxUint64) { |
| testRoundTrip(n); |
| n <<= 1; |
| } |
| } |