| /* |
| * 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 The upwards inference key type of an if map element without an |
| * else is the key type of the "then" element, likewise for the value type |
| * |
| * @description Checks that the upwards inference key type of an if map element |
| * without an else is the key type of the "then" element, likewise for the value |
| * type |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=constant-update-2018 |
| import "../../Utils/expect.dart"; |
| |
| main() { |
| var i = 1; |
| var x = {1: "Let", 2: "it", 3: "be"}; |
| var map1 = { |
| if (i > 0) ...x, |
| }; |
| Expect.isTrue(map1 is Map<int, String>); |
| |
| var map2 = { |
| "": "", |
| if (i < 0) ...?x, |
| }; |
| Expect.isTrue(map2 is Map<Object, String>); |
| Expect.isFalse(map2 is Map<String, String>); |
| Expect.isFalse(map2 is Map<num, String>); |
| } |