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// Copyright (c) 2022, 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 semantics of such an enum declaration, E, is defined as
/// introducing a (semantic) class, C, just like a similar class declaration.
/// ...
/// Enum values: For each <enumEntry> with name id and index i in the
/// comma-separated list of enum entries, a constant value is created, and a
/// static constant variable named id is created in C with that value. All the
/// constant values are associated, in some implementation dependent way, with
/// their name id as a string "id",
/// their index i as an int, and
/// their enum class’s name as a string, "Name",
/// all of which is accessible to the toString and index member of Enum, and to
/// the extension getter. The values are computed as follows.
/// id ↦ Name() (no arguments, equivalent to empty argument list)
/// id(args) ↦ Name(args)
/// id<types>(args) ↦ Name<types>(args)
/// id.named(args) ↦ Name._$named(args)
/// id<types>.named(args) ↦ Name<types>._$named(args)
/// where args are considered as occurring in a const context, and it’s a
/// compile-time error if they are then not compile-time constants.
/// @description Check enum's values name and index
/// @Issue 48179, 48181
/// @author
// SharedOptions=--enable-experiment=enhanced-enums
import "../../Utils/expect.dart";
enum E1 {
factory E1.f(int i) => E1.values[i];
enum E2 {
final String s = "Lily was here";
final int? val = null;
factory E2.f(int i) => E2.values[i];
main() {
Expect.equals(0, E1.e1.index);
Expect.equals(1, E1.e2.index);
Expect.equals(2, E1.e3.index);
Expect.equals("e1", EnumName(E1.e1).name);
Expect.equals("e2", EnumName(E1.e2).name);
Expect.equals("e3", EnumName(E1.e3).name);
Expect.equals(0, E2.e1.index);
Expect.equals(1, E2.e2.index);
Expect.equals(2, E2.e3.index);
Expect.equals("e1", EnumName(E2.e1).name);
Expect.equals("e2", EnumName(E2.e2).name);
Expect.equals("e3", EnumName(E2.e3).name);
Expect.equals("Lily was here", E2.e1.s);
Expect.equals("Lily was here", E2.e2.s);
Expect.equals("Lily was here", E2.e3.s);
Expect.equals(E1.e1, E1.f(0));
Expect.equals(E1.e2, E1.f(1));
Expect.equals(E1.e3, E1.f(2));
Expect.equals(E2.e1, E2.f(0));
Expect.equals(E2.e2, E2.f(1));
Expect.equals(E2.e3, E2.f(2));