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<!DOCTYPE html>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1581337
-->
<head>
  <title>Test for Bug 1581337</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/EventUtils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
  <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1581337">Mozilla Bug 1581337</a>
  <p id="display"></p>

  <div id="editor" contenteditable><span _moz_quote="true">foo bar</span></div>
</body>
<script>
SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(() => {
  let editor = document.getElementById("editor");
  editor.focus();
  let selection = document.getSelection();
  selection.collapse(editor.firstChild.firstChild, 4);
  synthesizeKey("KEY_Backspace");
  // FYI: `_moz_quote` attribute is ignored at serializing HTML content.
  is(editor.innerHTML, "<span>foobar</span>", "Backspace should delete the previous whitespace");
  synthesizeKey("KEY_Delete");
  is(editor.innerHTML, "<span>fooar</span>", "Delete should delete the next character, \"b\"");
  SimpleTest.finish();
});
</script>
</html>