dart-sdk/tests/language_2/type_variable_bounds4_test.dart
Janice Collins 3bed0647a0 Migrate block 162 to Dart 2.0.
Based heavily on https://codereview.chromium.org/3007803002, but built from scratch with the updated migration script.

Change-Id: I52ecd5dd97a73ec2f5fc524de532c5605c5d0a7d
Reviewed-on: https://dart-review.googlesource.com/9360
Commit-Queue: Janice Collins <jcollins@google.com>
Reviewed-by: Janice Collins <jcollins@google.com>
Reviewed-by: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Erik Ernst <eernst@google.com>
2017-10-03 17:47:59 +00:00

56 lines
1.1 KiB
Dart

// Copyright (c) 2013, 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.
// Test instantiation of object with malbounded types.
class A<
T
extends num //# 01: compile-time error
> {}
class B<T> implements A<T> {}
class C<
T
extends num //# 01: continued
> implements B<T> {}
class Class<T> {
newA() {
new A<T>();
}
newB() {
new B<T>();
}
newC() {
new C<T>();
}
}
void test(f()) {
var v = f();
}
void main() {
test(() => new A<int>());
// TODO(eernst): Should it be a compile-time error to create an instance
// of this class in #01?
test(() => new B<int>());
test(() => new C<int>());
test(() => new A<String>());
test(() => new B<String>());
test(() => new C<String>());
dynamic c = new Class<int>();
test(() => c.newA());
test(() => c.newB());
test(() => c.newC());
c = new Class<String>();
test(() => c.newA());
test(() => c.newB());
test(() => c.newC());
}