| // Copyright (c) 2017, 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 E firstWhere(bool test(E element), {E orElse()}) |
| /// ... |
| /// Iterates through elements and returns the first to satisfy test. |
| /// @description Checks that function test is invoked every time when firstWhere |
| /// iterates through elements to find first element that satisfies the given |
| /// predicate test. |
| /// @author ngl@unipro.ru |
| |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| Int32x4 i32x4(n) => new Int32x4(n, n, n, n); |
| |
| main() { |
| var list = [i32x4(0), i32x4(1), i32x4(2), i32x4(1), i32x4(3), i32x4(4)]; |
| var l = new Int32x4List.fromList(list); |
| var counter = 0; |
| l.firstWhere((e) {counter++; return e.x > 2;}); |
| Expect.equals(5, counter); |
| |
| l.firstWhere((e) {counter++; return e.y == 1;}); |
| Expect.equals(7, counter); |
| |
| l.firstWhere((e) {counter++; return e.z < 3;}); |
| Expect.equals(8, counter); |
| |
| l.firstWhere((e) {counter++; return e.w > 3;}); |
| Expect.equals(14, counter); |
| } |