mirror of
https://github.com/dart-lang/sdk
synced 2024-09-16 03:56:57 +00:00
bed5debbeb
Fixes #32156 Fixes #32157 Fixes #32426 This also fixes `implements Function` so it has no effect in Dart 2 (it is ignored for the purposes of subtyping.) Change-Id: Ibec9c77cd516b8b97fef68a579998598d0acf8c6 Reviewed-on: https://dart-review.googlesource.com/45141 Commit-Queue: Jenny Messerly <jmesserly@google.com> Reviewed-by: Paul Berry <paulberry@google.com> Reviewed-by: Vijay Menon <vsm@google.com>
36 lines
963 B
Dart
36 lines
963 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.
|
|
// Dart test program to test arithmetic operations.
|
|
|
|
import "package:expect/expect.dart";
|
|
|
|
class B {}
|
|
|
|
class C {
|
|
B call(B b) => b;
|
|
}
|
|
|
|
class D implements Function {
|
|
B call(B b) => b;
|
|
}
|
|
|
|
typedef B BToB(B x);
|
|
|
|
typedef Object NullToObject(Null x);
|
|
|
|
main() {
|
|
// The presence of a `.call` method does not cause class `C` to become a
|
|
// subtype of any function type.
|
|
C c = new C();
|
|
Expect.isFalse(c is BToB); //# 01: ok
|
|
Expect.isFalse(c is NullToObject); //# 02: ok
|
|
Expect.isFalse(c is Function); //# 03: ok
|
|
|
|
// The same goes for class `D`: `implements Function` is ignored in Dart 2.
|
|
D d = new D();
|
|
Expect.isFalse(d is BToB); //# 04: ok
|
|
Expect.isFalse(d is NullToObject); //# 05: ok
|
|
Expect.isFalse(d is Function); //# 06: ok
|
|
}
|