dart-sdk/tests/web_2/unconditional_dartio_import_test.dart
Sigmund Cherem 912005267d [web] rename suite dart2js -> web.
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>
2021-02-04 23:11:32 +00:00

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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
/// Tests that dart2js allows to import dart:io for web clients, but it
/// continues to indicate that it is not supported (so config-specific imports
/// continue to have the same semantics as before).
library unconditional_dartio_import_test;
import 'dart:io' as io; // import is allowed!
import 'package:expect/expect.dart';
main() {
// their APIs throw:
Expect.throws(() => new io.File('name').existsSync());
// ... but environment variable will indicate it is not supported.
Expect.isFalse(const bool.fromEnvironment('dart.library.io'));
}