test_on_promise_settled_duplicates.html

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<!--

Bug 1084065 - Test that Debugger.prototype.onPromiseResolved doesn't get dupes.

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<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.importESModule("resource://gre/modules/jsdebugger.sys.mjs");

  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) {

    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>