| /* |
| * 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, ..., Tk, [Tk+1, ..., Tn+k]) -> 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 is assignable to S. |
| * 2. Ti <=> Si for i in 1 to n. |
| * @description Checks that function type t1 is not a subtype of function type t2 if it has fewer |
| * positional optional parameters and none of them has required parameters. |
| * @author iefremov |
| * @reviewer rodionov |
| * @reviewer 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]) {} is t2); |
| Expect.isFalse(([var x]) {} is t2); |
| |
| Expect.isFalse(([int x, int y]) {} is t3); |
| Expect.isFalse(([var x, var y]) {} is t3); |
| } |