| /* |
| * 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> where(bool test(E element)) |
| * Returns a lazy [Iterable] with all elements that satisfy the predicate [test]. |
| * @description Checks that the returned [Iterable] contains all elements |
| * from [this] that satisfy [test], and all other elements are skipped. |
| * @author msyabro |
| */ |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| 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, bool test (var element)) { |
| var l = new Float32x4List.fromList(list); |
| var res = l.where(test); |
| |
| var count = 0; |
| |
| for(int i = 0 ; i < list.length; ++i) { |
| if(test(l[i])) { |
| Expect.isTrue(equal(l[i], res.elementAt(count))); |
| ++count; |
| } |
| } |
| Expect.equals(count, res.length); |
| } |
| |
| main() { |
| check([], (e) => true); |
| check([pack(1.0)], (e) => false); |
| check([pack(1.0), pack(1.0), pack(1.0), pack(2.0), pack(1.0), pack(1.0)], (e) => e.x == 1.0 ); |
| check([pack(0.0), pack(1.0), pack(2.0), pack(3.0), pack(4.0), pack(5.0)], (e) => e.x < 5.0 ); |
| check([pack(0.0), pack(1.0), pack(2.0), pack(3.0), pack(4.0), pack(5.0)], (e) => e.x > 0.0 ); |
| check([pack(0.0), pack(1.0), pack(2.0), pack(3.0), pack(4.0), pack(5.0)], (e) => e.x != 2.0 ); |
| } |