blob: 45f57ecfb234e06815ba859a0620e9148ecde42e [file] [log] [blame]
// Copyright (c) 2015, 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 "dart:async";
import "package:async_helper/async_helper.dart";
import "native_testing.dart";
typedef void Callback0();
@Native("A")
class A {
foo(Callback0 f) native;
}
makeA() native;
void setup() {
JS('', r"""
(function(){
function A() {}
A.prototype.foo = function(f) { return f(); };
self.makeA = function() { return new A(); };
self.nativeConstructor(A);
})()""");
applyTestExtensions(['A']);
}
main() {
nativeTesting();
setup();
// Makes sure that we don't run the event-loop when we have a reentrant
// call from JS to Dart code.
// We start by setting up a microtask that should only run after main has
// finished. We then pass a closure into JavaScript. That closure is
// immediately invoked. Dart2js had a bug, that it would start the event-loop
// at this moment (a JS->Dart transition), and execute the scheduled
// microtask.
var events = [];
asyncStart();
var a = makeA();
new Future.microtask(() {
events.add("scheduleMicrotask");
}).whenComplete(asyncEnd);
Expect.equals(499, a.foo(() {
events.add("closure to foo");
return 499;
}));
events.add("after native call");
Expect.listEquals(["closure to foo", "after native call"], events);
}