dart-sdk/tests/dart2js/generic_instantiation4_test.dart
Joshua Litt f9f1ca6171 [dart2js] Create tests/dart2js for nnbd.
Change-Id: Ib8721cf976803d8d1b9d723b7e691e344c768b67
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/149881
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Joshua Litt <joshualitt@google.com>
2020-06-09 16:53:15 +00:00

23 lines
526 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.
// dart2jsOptions=--strong --omit-implicit-checks
import 'package:expect/expect.dart';
bool f<T, S>(T a, S b) => a is S;
typedef bool F<P, Q>(P a, Q b);
class B<X, Y> {
F<X, Y> c;
B() : c = f;
}
main() {
Expect.isTrue(new B<int, int>().c(0, 0));
Expect.isFalse(new B<int, String>().c(0, ''));
}