blob: f436a1a6f51a614bedcd2b281122d5cee1b9f363 [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 generic type alias is a declaration [D] of one of the following
* forms:
* m typedef id<X1 extends B1, . . . , Xs extends Bs> = T;
* ...
* [D] introduces a mapping from actual type argument lists to types.
* @description Checks that [D] maps argument list to types when [T] represents
* some function
* @author
import "../../Utils/expect.dart";
class X {}
class Y extends X {}
void checkme1(dynamic a) {}
void checkme2(Null a) {}
void checkme3(int a) {}
void checkme4(X a) {}
void checkme5(Y a) {}
typedef Func1<T> = void Function(T);
typedef Func2<T extends X> = void Function(T);
typedef Func3<T extends Y> = void Function(T);
main() {
Expect.isTrue(checkme1 is Func1);
Expect.isFalse(checkme2 is Func1);
Expect.isFalse(checkme3 is Func1);
Expect.isFalse(checkme4 is Func1);
Expect.isFalse(checkme5 is Func1);
Expect.isTrue (checkme1 is Func2);
Expect.isFalse(checkme2 is Func2);
Expect.isFalse(checkme3 is Func2);
Expect.isTrue (checkme4 is Func2);
Expect.isFalse(checkme5 is Func2);
Expect.isTrue (checkme1 is Func3);
Expect.isFalse(checkme2 is Func3);
Expect.isFalse(checkme3 is Func3);
Expect.isTrue (checkme4 is Func3);
Expect.isTrue (checkme5 is Func3);