| // 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. |
| |
| import "package:expect/expect.dart"; |
| |
| // Dart test program testing string interpolation with toString on custom |
| // classes and on null. |
| |
| class A { |
| const A(); |
| String toString() { |
| return "A"; |
| } |
| } |
| |
| class StringInterpolation7Test { |
| static testMain() { |
| A? a = new A(); |
| Expect.equals("A + A", "$a + $a"); |
| a = null; |
| Expect.equals("null", "$a"); |
| } |
| } |
| |
| main() { |
| StringInterpolation7Test.testMain(); |
| } |