| /* |
| * 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 The function type (T1, ... Tn, {Tx1 x1, ..., Txk xk}) -> T is a subtype of the function |
| * type (S1, ..., Sn, {Sy1 y1, ..., Sym ym }) -> S, if all of the following conditions are met: |
| * 1. Either S is void, or T <=> S. |
| * 2. For all i 1 <= i <= n, Ti <=> Si. |
| * 3. k >= m and yi belongs to {x1, ..., xk} for each i in 1..m. |
| * 4. For all y in {y1, ..., ym}, yi = xj => Tj <=> Si |
| * @description Checks that function type t1 is not a subtype of function type t2 if its |
| * named optional parameters are a smaller subset of t2's. |
| * @author rodionov |
| * @reviewer kaigorodov |
| */ |
| 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}) {} is t2); |
| Expect.isFalse(({var x}) {} is t2); |
| |
| Expect.isFalse(({int x, int y}) {} is t3); |
| Expect.isFalse(({var x, var y}) {} is t3); |
| } |