blob: 22081ff29361323ea896f47ef2753ce7b2964091 [file] [log] [blame]
* Copyright (c) 2019, 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 A class declaration, type alias, or function [G] may be generic,
* that is, [G] may have formal type parameters declared.
* @description @description Checks various correct type alias declarations.
* @author
// SharedOptions=--enable-experiment=nonfunction-type-aliases
import "../../Utils/expect.dart";
class A<T> {}
class B<T1, T2> {
B(this.x, this.y) {}
T1 x;
T2 y;
typedef BAlias<T> = B<T, T>;
main() {
BAlias b1 = new B(1, 2);
Expect.isTrue(b1 is B);
Expect.isTrue(b1 is BAlias);
Expect.equals(1, b1.x);
Expect.equals(2, b1.y);
BAlias<int> b2 = new B<int, int>(0, 100);
Expect.isTrue(b2 is B<int, int>);
Expect.isTrue(b2 is BAlias<int>);
Expect.equals(0, b2.x);
Expect.equals(100, b2.y);
A a = new A<int>();
BAlias<A<int>> b3 = new B<A<int>, A<int>>(a, null);
Expect.isTrue(b3 is B<A<int>, A<int>>);
Expect.isTrue(b3 is BAlias<A<int>>);
Expect.equals(a, b3.x);
Expect.equals(a, b3.y);