blob: 93ed5215d36cb9de76ba3c32438bb8503a8da211 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/
-->
<!DOCTYPE HTML>
<html>
<head>
<title>Bug 1450358 - Test MessageChannel event listener leak conditions</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="/tests/dom/events/test/event_leak_utils.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<script class="testbody" type="text/javascript">
// Manipulate MessageChannel objects in the frame's context.
// Its important here that we create a listener callback from
// the DOM objects back to the frame's global in order to
// exercise the leak condition.
async function useMessagePort(contentWindow) {
contentWindow.messageCount = 0;
let mc = new contentWindow.MessageChannel
mc.port1.postMessage("foo");
await new Promise(resolve => {
mc.port2.onmessage = e => {
contentWindow.messageCount += 1;
resolve();
};
});
is(contentWindow.messageCount, 1, "message should be received");
}
async function runTest() {
try {
await checkForEventListenerLeaks("MessageChannel", useMessagePort);
} catch (e) {
ok(false, e);
} finally {
SimpleTest.finish();
}
}
SimpleTest.waitForExplicitFinish();
addEventListener("load", runTest, { once: true });
</script>
</pre>
</body>
</html>
|
