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<!DOCTYPE html>
<meta charset="utf-8">
<title>Test for ScreenOrientation API</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="orientationcommon.js"></script>
<div id="log"></div>
<iframe id="frame"></iframe>
<script>
async_test(function(t) {
  var originalOrientation = screen.orientation.type;
  var alternateOrientation = originalOrientation == "portrait-primary" ?
    "landscape-primary" : "portrait-primary";

  window.addEventListener("message", function(event) {
    t.step(function() { assert_array_equals(event.data, [alternateOrientation, originalOrientation]); });
    t.done();
  });

  var frame = document.getElementById("frame");
  frame.src = "file_record_orientation.html";

  frame.onload = function() {
    var p = specialPowersLock(alternateOrientation);
    p.then(function() {
      return specialPowersLock(originalOrientation);
    }).then(function() {
      return specialPowersUnlock();
    }).then(function() {
      frame.contentWindow.postMessage("report", "*");
    }).catch(t.step_func(function(err) {
      assert_unreached("Error setting orientation: " + err);
      t.done();
    }));
  };
}, "Test orientation change event in frame.");
</script>