| // 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 Iterable<E> take(int count) |
| /// Returns a lazy iterable of the [count] first elements of this iterable. |
| /// @description Checks that the returned [Iterable] has the length [count] and |
| /// contains first [count] elements from [this]. |
| /// @author msyabro |
| |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| Float32x4 pack(v) => new Float32x4.splat(v); |
| |
| equal(obj1, obj2) { |
| var res = obj1.equal(obj2); |
| return res.flagX && res.flagY && res.flagZ && res.flagW; |
| } |
| |
| void check(List<Float32x4> list, int n) { |
| var l = new Float32x4List.fromList(list); |
| var res = l.take(n); |
| Expect.equals(n, res.length); |
| |
| for (int i = 0; i < n; ++i) { |
| Expect.isTrue(equal(l[i], res.elementAt(i))); |
| } |
| } |
| |
| main() { |
| check([], 0); |
| check([pack(1.0)], 0); |
| check([pack(1.0)], 1); |
| |
| check([ |
| pack(0.0), pack(1.0), pack(2.0), pack(3.0), pack(4.0), pack(5.0), |
| pack(6.0), pack(7.0), pack(8.0), pack(9.0) |
| ], 0); |
| check([ |
| pack(0.0), pack(1.0), pack(2.0), pack(3.0), pack(4.0), pack(5.0), |
| pack(6.0), pack(7.0), pack(8.0), pack(9.0) |
| ], 1); |
| check([ |
| pack(0.0), pack(1.0), pack(2.0), pack(3.0), pack(4.0), pack(5.0), |
| pack(6.0), pack(7.0), pack(8.0), pack(9.0) |
| ], 5); |
| check([ |
| pack(0.0), pack(1.0), pack(2.0), pack(3.0), pack(4.0), pack(5.0), |
| pack(6.0), pack(7.0), pack(8.0), pack(9.0) |
| ], 10); |
| } |