dart-sdk/tests/corelib_2/from_environment_default_value_test.dart
Leaf Petersen b101a7d002 Add language versions to _2 test libraries
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548
Reviewed-by: Bob Nystrom <rnystrom@google.com>
Commit-Queue: Leaf Petersen <leafp@google.com>
2021-04-26 17:58:57 +00:00

23 lines
899 B
Dart

// Copyright (c) 2020, 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 = 2.9
import "package:expect/expect.dart";
main() {
// Verify that the default value is as expected.
Expect.equals(false, const bool.fromEnvironment('UNDEFINED_NAME'));
Expect.equals(0, const int.fromEnvironment('UNDEFINED_NAME'));
Expect.equals('', const String.fromEnvironment('UNDEFINED_NAME'));
// Verify that `defaultValue` is used when passed, not the default values.
Expect.equals(
true, const bool.fromEnvironment('UNDEFINED_NAME', defaultValue: true));
Expect.equals(
1, const int.fromEnvironment('UNDEFINED_NAME', defaultValue: 1));
Expect.equals('qux',
const String.fromEnvironment('UNDEFINED_NAME', defaultValue: 'qux'));
}