<!DOCTYPE HTML>
<html>
<head>
  <title>Test for Clipboard Events</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<p id="display"></p>
<script>
"use strict";

// The clipboard event tests require `GlobalEventHandlers.onbeforeinput`
// attribute which is available only when `beforeinput` event is enabled.
// For ensuring it's available with any element in the document, we need
// to enable it in this window and then, create elements in the new
// document in a child window.

SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(async () => {
  await SpecialPowers.pushPrefEnv({
    set: [
      // NOTE: The tests operate under the assumption that the protected mode of
      // DataTransfer is enabled.
      ["dom.events.dataTransfer.protected.enabled", true],
    ]
  });
  let childWindow =
    window.open("window_clipboard_events.html", "_blank", "width=500,height=800");
  ok(childWindow, "A child window should've been opened");
  childWindow.onclose = () => {
    SimpleTest.finish();
  };
});
</script>
</body>
</html>
