1 files changed, 31 insertions, 0 deletions
diff --git a/dom/tests/mochitest/dom-level0/test_separate_post_message_queue.html b/dom/tests/mochitest/dom-level0/test_separate_post_message_queue.html
new file mode 100644
index 0000000000..357faa6b09
--- /dev/null
+++ b/dom/tests/mochitest/dom-level0/test_separate_post_message_queue.html
@@ -0,0 +1,31 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for using separate event queue for post messages during page load behaviors</title>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<p id="display"></p>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+SimpleTest.waitForExplicitFinish();
+var tab;
+var callOrder = [];
+function onDone() {
+  tab.close();
+  isDeeply(callOrder, ["Runnable1", "Runnable2", "Runnable3", "PostMessage",
+    "Runnable1", "Runnable2", "Runnable3", "PostMessage"], "Runnables should be fired prior to PostMessage");
+  SimpleTest.finish();
+}
+
+SpecialPowers.pushPrefEnv({"set":[["dom.separate_event_queue_for_post_message.enabled", true]]}, function () {
+  tab = window.open('file_separate_post_message_queue.html');
+  tab.loadCount = 1;
+});
+
+</script>
+</pre>
+</body>
+</html>