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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=911595
+-->
+<head>
+ <title>Test for spinning the event loop inside position handlers</title>
+ <script type="text/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+ <script type="text/javascript" src="geolocation_common.js"></script>
+
+ <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=911595 ">Mozilla Bug 911595</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+/*
+ * In bug 911595 , spinning the event loop from inside position
+ * handlers could cause both success and error callbacks to be
+ * fired for the same request if that request has a small timeout.
+ */
+
+var { classes: Cc, interfaces: Ci, utils: Cu } = Components;
+
+SimpleTest.waitForExplicitFinish();
+
+resume_geolocationProvider(function() {
+ force_prompt(true, test1);
+});
+
+var successCallbackCalled = false;
+function successCallback(position) {
+ successCallbackCalled = true;
+ check_geolocation(position);
+ while (!timeoutPassed) {
+ SpecialPowers.spinEventLoop(window);
+ }
+ info("TEST-INFO | successCallback called");
+ check();
+}
+
+var errorCallbackCalled = false;
+function errorCallback(error) {
+ errorCallbackCalled = true;
+ info("TEST-INFO | errorCallback called");
+ check();
+}
+
+function check() {
+ ok(successCallbackCalled != errorCallbackCalled, "Ensure only one callback is called");
+ SimpleTest.finish();
+}
+
+var timeoutPassed = false;
+var timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+function test1() {
+ SpecialPowers.pushPrefEnv({"set": [["geo.wifi.timeToWaitBeforeSending", 10]]}, function() {
+ navigator.geolocation.getCurrentPosition(successCallback, errorCallback, {timeout: 500});
+ timer.initWithCallback(timer => {
+ timeoutPassed = true;
+ }, 600, Ci.nsITimer.TYPE_ONE_SHOT);
+ });
+}
+</script>
+</pre>
+</body>
+</html>