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-rw-r--r-- | dom/messagechannel/tests/test_event_listener_leaks.html | 50 |
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diff --git a/dom/messagechannel/tests/test_event_listener_leaks.html b/dom/messagechannel/tests/test_event_listener_leaks.html new file mode 100644 index 0000000000..93ed5215d3 --- /dev/null +++ b/dom/messagechannel/tests/test_event_listener_leaks.html @@ -0,0 +1,50 @@ +<!-- + 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> |