blob: 55a26837e71261d506b1cb0205e8cd3072dbec56 [file] [log] [blame]
// @dart = 2.9
library NativeGCTest;
import 'dart:async';
import 'dart:html';
import 'package:expect/minitest.dart';
var testEvent = new EventStreamProvider<Event>('test');
void testEventListener() {
final int N = 1000000;
final int M = 1000;
var div;
for (int i = 0; i < M; ++i) {
// This memory should be freed when the listener below is
// collected.
List l = new List(N);
// Record the iteration number.
l[N - 1] = i;
div = new Element.tag('div');
testEvent.forTarget(div).listen((_) {
// Only the final iteration's listener should be invoked.
// Note: the reference to l keeps the entire list alive.
expect(l[N - 1], M - 1);
});
}
final event = new Event('test');
div.dispatchEvent(event);
}
Future<Null> testWindowEventListener() {
String message = 'WindowEventListenerTestPingMessage';
Element testDiv = new DivElement();
testDiv.id = '#TestDiv';
document.body.append(testDiv);
window.onMessage.listen((e) {
if (e.data == message) testDiv.click();
});
for (int i = 0; i < 100; ++i) {
triggerMajorGC();
}
final done = new Completer<Null>();
testDiv.onClick.listen(((_) {
done.complete();
}));
window.postMessage(message, '*');
return done.future;
}
main() async {
testEventListener();
await testWindowEventListener();
}
void triggerMajorGC() {
List list = new List(1000000);
Element div = new DivElement();
div.onClick.listen((e) => print(list[0]));
}