| // Copyright (c) 2012, 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. |
| |
| import 'dart:html'; |
| import 'dart:typed_data'; |
| |
| import 'package:expect/minitest.dart'; |
| |
| main() { |
| var isList = predicate((x) => x is List, 'is a List'); |
| var isNumList = predicate((x) => x is List<num>, 'is a List<num>'); |
| var isNotStringList = |
| predicate((x) => x is! List<String>, 'is not a List<String>'); |
| var expectation = Platform.supportsTypedData ? returnsNormally : throws; |
| |
| group('supported', () { |
| test('supported', () { |
| expect(Platform.supportsTypedData, true); |
| }); |
| }); |
| |
| group('arrays', () { |
| test('createByLengthTest', () { |
| expect(() { |
| var a = new Float32List(10); |
| expect(a.length, 10); |
| expect(a.lengthInBytes, 40); |
| expect(a[4], 0); |
| }, expectation); |
| }); |
| |
| test('aliasTest', () { |
| expect(() { |
| var a1 = new Uint8List.fromList([0,0,1,0x45]); |
| var a2 = new Float32List.view(a1.buffer); |
| |
| expect(a1.lengthInBytes, a2.lengthInBytes); |
| |
| expect(a2.length, 1); |
| |
| // 0x45010000 = 2048+16 |
| expect(a2[0], 2048 + 16); |
| |
| a1[2] = 0; |
| // 0x45000000 = 2048 |
| expect(a2[0], 2048); |
| |
| a1[3]--; |
| a1[2] += 128; |
| // 0x44800000 = 1024 |
| expect(a2[0], 1024); |
| }, expectation); |
| }); |
| |
| // Generic type checking is not available in dart2js, so use this check to |
| // see if we should check for it. |
| var supportsTypeTest = !(new List<String>() is List<int>); |
| |
| if (supportsTypeTest) { |
| test('typeTests', () { |
| expect(() { |
| var a = new Float32List(10); |
| expect(a, isList); |
| expect(a, isNumList); |
| expect(a, isNotStringList); |
| }, expectation); |
| }); |
| } |
| }); |
| } |