blob: f20c6cc4ab114c7969dadee8284c09a887d0ca21 [file] [log] [blame]
// Copyright (c) 2021, 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 The Enum class behaves as if it was declared as:
/// class Enum {
/// // No default constructor.
/// external int get index;
/// external String toString();
/// }
/// We intend to (at least pretend to) let enum classes extend Enum, and let
/// mixins and members access the default index and toString() through super..
/// (In practice, we may use a different class implementing Enum as the
/// superclass, but for checking the validity of super.index/super.toString(),
/// we analyze against Enum itself, so it must have non-abstract
/// implementations.)
/// This all makes it look as if Enum would be a valid superclass for the mixin
/// applications and methods of the enhanced enum class.
/// @description Check that `Enum` and other interfaces are implemented
/// @author
// SharedOptions=--enable-experiment=enhanced-enums
import "../../Utils/expect.dart";
class I1 {
abstract class I2 {
mixin M on Object {
int mixedInMethod() => 42;
enum E<T> with M implements I1, I2 {
const E(T t);
main() {
Expect.isTrue(E.e1 is Enum);
Expect.isTrue(E.e2 is Enum);
Expect.isTrue(E.e3 is Enum);
Expect.isTrue(E.e1 is I1);
Expect.isTrue(E.e2 is I1);
Expect.isTrue(E.e3 is I1);
Expect.isTrue(E.e1 is I2);
Expect.isTrue(E.e2 is I2);
Expect.isTrue(E.e3 is I2);
Expect.isTrue(E.e1 is M);
Expect.isTrue(E.e2 is M);
Expect.isTrue(E.e3 is M);
Expect.isTrue(E.e1 is E<int>);
Expect.isTrue(E.e2 is E<String>);
Expect.isTrue(E.e3 is E<bool>);