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// 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 This differs for a generic type alias. If the type alias is
/// instantiated (implicitly or explicitly), then the result is still the same
/// as tearing off the aliased type directly, and it's constant and
/// canonicalized if the type arguments are constant.
/// @description Checks that the result of generic type alias tearing off is
/// constant and canonicalized when the alias is instantiated.
/// @author
/// @issue 47267
/// @issue 47462
// SharedOptions=--enable-experiment=constructor-tearoffs
import "../../Utils/expect.dart";
typedef MyList<T extends num> = List<T>;
main() {
var v1 = MyList<num>.filled;
var v2 = MyList<num>.filled;
var v3 = (MyList.filled)<num>;
Expect.identical(v1, v2);
Expect.isFalse(identical(v1, v3));
const v4 = MyList<int>.filled;
const v5 = MyList<int>.filled;
const v6 = (MyList.filled)<int>;
const CheckIdentical(v4, v5);
const CheckNotIdentical(v4, v6);
Expect.notEquals(v1, v4);