| // Copyright (c) 2013, 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. |
| |
| // @dart = 2.9 |
| |
| // Test the use of general expression as keys in const map literals. |
| |
| library map_literal6_test; |
| |
| import "package:expect/expect.dart"; |
| |
| class A { |
| const A(); |
| } |
| |
| class B { |
| final a; |
| const B(this.a); |
| } |
| |
| void main() { |
| var m1 = const { |
| const A(): 0, |
| const B(1): 2, |
| const B(const A()): 3, |
| const B(0): 4, |
| }; |
| Expect.isTrue(m1.containsKey(const A())); |
| Expect.isTrue(m1.containsKey(const B(0))); |
| Expect.isTrue(m1.containsKey(const B(1))); |
| Expect.isTrue(m1.containsKey(const B(const A()))); |
| Expect.equals(0, m1[const A()]); |
| Expect.equals(4, m1[const B(0)]); |
| Expect.equals(2, m1[const B(1)]); |
| Expect.equals(3, m1[const B(const A())]); |
| } |