| /* |
| * 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 t1 has more required parameters than t2; or t1 has less positional |
| * (both required and optional) parameters than t2. |
| * @author iefremov |
| */ |
| import "../../../Utils/expect.dart"; |
| |
| typedef t1(int x); |
| typedef t2(int x, int y); |
| typedef t3(int x, int y, [int z]); |
| |
| main() { |
| Expect.isFalse(() {} is t1); |
| Expect.isFalse((int x, var y) {} is t1); |
| Expect.isFalse((int x, int y) {} is t1); |
| |
| Expect.isFalse(([int x = 42]) {} is t2); |
| Expect.isFalse((int x) {} is t2); |
| Expect.isFalse((int y) {} is t2); |
| Expect.isFalse((int x, int y, int z) {} is t2); |
| |
| Expect.isFalse((int x, int y, int z) {} is t3); |
| } |