| // 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. |
| |
| import 'package:expect/expect.dart'; |
| |
| /// Dart2js only supports the const constructor for `?.fromEnvironment`. The |
| /// current behavior is to throw at runtime if they call this constructor with |
| /// `new` instead of `const`. |
| main() { |
| Expect.isFalse(const bool.fromEnvironment('X')); |
| Expect.equals('', const String.fromEnvironment('X', defaultValue: '')); |
| Expect.equals(const int.fromEnvironment('X', defaultValue: 0), 0); |
| |
| Expect.throws(() => new bool.fromEnvironment('X')); |
| Expect.throws(() => new String.fromEnvironment('X')); |
| Expect.throws(() => new int.fromEnvironment('X', defaultValue: 0)); |
| } |