1 files changed, 53 insertions, 0 deletions
diff --git a/dom/browser-element/mochitest/priority/test_Audio.html b/dom/browser-element/mochitest/priority/test_Audio.html
new file mode 100644
index 000000000..d39b1c9f3
--- /dev/null
+++ b/dom/browser-element/mochitest/priority/test_Audio.html
@@ -0,0 +1,53 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Test that frames playing audio get BACKGROUND_PERCEIVABLE priority.
+-->
+<head>
+  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript" src="../browserElementTestHelpers.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+
+<script type="application/javascript;version=1.7">
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+browserElementTestHelpers.enableProcessPriorityManager();
+
+function runTest() {
+  var iframe = document.createElement('iframe');
+  iframe.setAttribute('mozbrowser', true);
+  iframe.src = 'file_Audio.html';
+
+  var childID = null;
+  Promise.all([
+    expectOnlyOneProcessCreated("FOREGROUND").then(function(chid) {
+      childID = chid;
+    }),
+    expectMozbrowserEvent(iframe, 'loadend'),
+    expectMozbrowserEvent(iframe, 'showmodalprompt').then(function(e) {
+      is(e.detail.message, 'onplay', 'showmodalprompt message');
+    })
+  ]).then(function() {
+    // Send the child process into the background.  Because it's playing audio,
+    // it should get priority BACKGROUND_PERCEIVABLE, not vanilla BACKGROUND.
+    var p = expectPriorityChange(childID, 'BACKGROUND_PERCEIVABLE');
+    iframe.setVisible(false);
+    return p;
+  }).then(function() {
+    var p = expectPriorityChange(childID, 'FOREGROUND');
+    iframe.setVisible(true);
+    return p;
+  }).then(SimpleTest.finish);
+
+  document.body.appendChild(iframe);
+}
+
+addEventListener('testready', runTest);
+
+</script>
+</body>
+</html>