| /* |
| * 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 A property access e?.f translates to: |
| * SHORT[EXP(e), fn[x] => x.f] |
| * |
| * @description Check that a property access e?.f translates to: |
| * SHORT[EXP(e), fn[x] => x.f] |
| * Test e?.f?.g |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=non-nullable |
| import "../../Utils/expect.dart"; |
| |
| class C { |
| String? test1 = "Lily was here"; |
| String? get test2 => test1; |
| } |
| |
| void testShort(C? x) { |
| var actual = x?.test1?.substring(0, 4); |
| var n0 = x; |
| var expected = n0 == null ? null : n0.test1 == null ? null : n0.test1.substring(0, 4); |
| Expect.equals(expected, actual); |
| |
| var actual2 = x?.test2?.length; |
| var expected2 = n0 == null ? null : n0.test2 == null ? null : n0.test2.length; |
| Expect.equals(expected2, actual2); |
| } |
| |
| main() { |
| C? c1 = null; |
| testShort(c1); |
| c1 = new C(); |
| testShort(c1); |
| c1.test1 = null; |
| testShort(c1); |
| |
| C c2 = new C(); |
| testShort(c2); |
| c2.test1 = null; |
| testShort(c2); |
| } |