gecko-dev/dom/promise/tests/test_on_promise_settled_dup...

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<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/
-->
<!--
Bug 1084065 - Test that Debugger.prototype.onPromiseResolved doesn't get dupes.
-->
<html>
<head>
<title>Test for interaction with SpiderMonkey's Debugger.prototype.onNewPromise</title>
<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css">
</head>
<body>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script type="application/javascript">
SimpleTest.waitForExplicitFinish();
is(Object.prototype.toString.call(new Promise(function() {})),
"[object Promise]",
"We should have the native DOM promise implementation.");
const {addDebuggerToGlobal} = ChromeUtils.import("resource://gre/modules/jsdebugger.jsm");
var dbgGlobal = new Cu.Sandbox(document.nodePrincipal,
{freshCompartment: true});
addDebuggerToGlobal(dbgGlobal);
var dbg = new dbgGlobal.Debugger(this);
var seen = new Set();
dbg.onPromiseSettled = function(wp) {
is(seen.has(wp), false);
seen.add(wp);
};
var promise = new Promise(function(fulfill, reject) {
fulfill(1);
fulfill(2);
fulfill(3);
});
promise
.then(function() {
dbg.onPromiseSettled = undefined;
})
.catch(function(e) {
ok(false, "Got an unexpected error: " + e);
})
.then(SimpleTest.finish);
</script>
</pre>
</body>
</html>