dart-sdk/tests/language/vm/tree_shake_type_args_in_constant_test.dart
Robert Nystrom 2034061433 Migrate language_2/vm to NNBD.
Change-Id: I313a57ed7c7ea2ada75065f55a7367376f6bdae5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152183
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Srujan Gaddam <srujzs@google.com>
2020-06-25 20:39:23 +00:00

22 lines
592 B
Dart

// Copyright (c) 2018, 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.
// This test verifies that if a class is only used as a type argument of
// a constant object, it is not removed by tree shaker.
import "package:expect/expect.dart";
@pragma("vm:entry-point") // Prevent obfuscation
abstract class A {}
class B<T> {
const B();
toString() => T.toString();
}
void main() {
const x = const B<A>();
Expect.equals("A", x.toString());
}