| // Copyright (c) 2023, 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. |
| |
| test(dynamic x) { |
| switch (x) { |
| case [final int a]: |
| case final int a: |
| return a; |
| case [final String a] || final String a: |
| return a; |
| default: |
| return null; |
| } |
| } |
| |
| main() { |
| expectEquals(test(0), 0); |
| expectEquals(test([0]), 0); |
| expectEquals(test("foo"), "foo"); |
| expectEquals(test(["foo"]), "foo"); |
| expectEquals(test(3.14), null); |
| } |
| |
| expectEquals(x, y) { |
| if (x != y) { |
| throw "Expected '${x}' to be equal to '${x}'."; |
| } |
| } |