| // Copyright (c) 2014, 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 = 2.7 |
| |
| import "native_testing.dart"; |
| |
| @Native("A") |
| class A { |
| var foo; |
| } |
| |
| class B { |
| var foo; |
| } |
| |
| nativeId(x) native; |
| |
| void setup() { |
| JS('', r""" |
| (function(){ |
| self.nativeId = function(x) { return x; } |
| })()"""); |
| } |
| |
| main() { |
| setup(); |
| var b = new B(); |
| b.foo = (x) => x + 1; |
| b = nativeId(b); // Inferrer doesn't know if A has been instantiated. |
| // At this point b could be A or B. The call to "foo" thus needs to go through |
| // an interceptor. Tests that the interceptor works for retrieving the field |
| // and invoking the closure. |
| // Use a type-check to guarantee that b is a "B". |
| if (b is B) { |
| Expect.equals(499, b.foo(498)); |
| } |
| } |