blob: 81961af870f813e1dc6093a71c3595bab1d8ca16 [file] [log] [blame]
// Copyright (c) 2019, 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.
/// @assertion All opted-in libraries upstream from the legacy library are
/// viewed by the legacy library with nullability related features erased from
/// their APIs. In particular:
/// - All types of the form T? in the opted-in API are treated as T.
/// - All required named parameters are treated as optional named parameters.
/// - The type Never is treated as the type Null
/// @description Check that all types of the form T? in the opted-in API are
/// treated as T
/// @author
// @dart=2.6
// Requirements=nnbd-weak
import "../../../Utils/expect.dart";
import "opted_in_lib.dart";
main() {
aVar1 = new A();
Expect.isTrue(aVar1 is A);
aVar1 = null;
cVar1 = new C<A>(aVar1);
Expect.isTrue(cVar1 is C<A>);
cVar1 = null;
sVar1 = "Lily was here";
Expect.isTrue(sVar1 is String);
sVar1 = null;
iVar1 = 42;
Expect.isTrue(iVar1 is int);
iVar1 = null;
A a = null;
C<A> c = null;