mirror of
https://github.com/dart-lang/sdk
synced 2024-10-14 15:09:04 +00:00
912005267d
Change-Id: I46be49b2effec3e38a3dc44cd45cfe736f77fa78 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/182680 Commit-Queue: Sigmund Cherem <sigmund@google.com> Reviewed-by: Joshua Litt <joshualitt@google.com> Reviewed-by: Nicholas Shahan <nshahan@google.com> Reviewed-by: Stephen Adams <sra@google.com>
21 lines
843 B
Dart
21 lines
843 B
Dart
// 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.
|
|
|
|
// @dart = 2.7
|
|
|
|
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));
|
|
}
|