| /* |
| * Copyright (c) 2011, 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 double atan2(num a, num b) |
| * Throws an error if either [a] or [b] is null. |
| * @description Checks that Error is thrown when passed argument is a null. |
| * @author msyabro |
| * @reviewer pagolubev |
| * @needsreview undocumented |
| */ |
| import "../../Utils/expect.dart"; |
| |
| import "dart:math" as Math; |
| |
| void checkNPE(var arg1, var arg2) { |
| Expect.throws( () { |
| Math.atan2(arg1, arg2); |
| }); |
| } |
| main() { |
| checkNPE(null, 1); |
| checkNPE(1, null); |
| checkNPE(null, null); |
| checkNPE(double.NAN, null); |
| } |