| // Copyright (c) 2011, 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 function type (T1,...Tk,[Tk+1,...,Tn+m]) -> T is a subtype of |
| * the function type (S1,...,Sk+j,[Sk+j+1,...,Sn]) -> S, if all of the following |
| * conditions are met: |
| * 1. Either |
| * • S is void, or |
| * • T <=> S. |
| * 2. ∀i ∈ 1..n, Ti ⇐⇒ Si. |
| * @description Checks that function type t1 is not a subtype of function type |
| * t2 if a formal parameter of t1 is not assignable to a corresponding parameter |
| * of t2 (both t1 and t2 have a single required formal parameter). |
| * @author iefremov |
| */ |
| import "../../../Utils/expect.dart"; |
| |
| class A {} |
| class B {} |
| |
| typedef t1(int a); |
| typedef t3(A a); |
| typedef t4(List<A> a); |
| typedef t5(t1 a); |
| |
| main() { |
| Expect.isFalse((double p) {} is t1); |
| Expect.isFalse((bool p) {} is t1); |
| Expect.isFalse((A p) {} is t1); |
| Expect.isFalse((List<int> p) {} is t1); |
| Expect.isFalse((t3 p) {} is t1); |
| |
| Expect.isFalse((double p) {} is t3); |
| Expect.isFalse((bool p) {} is t3); |
| Expect.isFalse((List<int> p) {} is t3); |
| Expect.isFalse((t3 p) {} is t3); |
| Expect.isFalse((B p) {} is t3); |
| |
| Expect.isFalse((double p) {} is t4); |
| Expect.isFalse((bool p) {} is t4); |
| Expect.isFalse((A p) {} is t4); |
| Expect.isFalse((List<int> p) {} is t4); |
| Expect.isFalse((List<B> p) {} is t4); |
| Expect.isFalse((t3 p) {} is t4); |
| |
| Expect.isFalse((double p) {} is t5); |
| Expect.isFalse((bool p) {} is t5); |
| Expect.isFalse((A p) {} is t5); |
| Expect.isFalse((List<int> p) {} is t5); |
| Expect.isFalse((t4 p) {} is t5); |
| } |