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<!DOCTYPE html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1425997
-->
<html>
<head>
  <title>Test for Bug 1425997</title>
  <script src="/tests/SimpleTest/SimpleTest.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=1425997">Mozilla Bug 1425997</a>
<p id="display"></p>
<div id="content" style="display: none;">

</div>

<div id="editor" contenteditable>
<!-- -->
<span id="inline">foo</span>
</div>

<pre id="test">

<script class="testbody" type="application/javascript">
SimpleTest.waitForExplicitFinish();
// 2 assertions are recorded due to nested execCommand() but not a problem.
// They are necessary to detect invalid method call without mutation event listers.
SimpleTest.expectAssertions(2, 2);
SimpleTest.waitForFocus(async function() {
  await SpecialPowers.pushPrefEnv({set: [["dom.document.exec_command.nested_calls_allowed", true]]});
  let selection = window.getSelection();
  let editor = document.getElementById("editor");
  function onCharacterDataModified() {
    // Until removing all NBSPs which were inserted by the editor,
    // emulates Backspace key with "delete" command.
    // When this test is created, the behavior was:
    //   after 1st delete: "\n<!-- -->&nbsp;\n"
    //   after 2nd delete: "\n<!-- -->&nbsp;"
    //   Then, selection is moved into the comment node and deletion won't
    //   work after that.
    while (editor.innerHTML.includes("&nbsp;")) {
      let preInnerHTML = editor.innerHTML;
      if (!document.execCommand("delete", false) || preInnerHTML === editor.innerHTML) {
        break;
      }
      info(`editor.innerHTML: "${editor.innerHTML.replace(/\n/g, "\\n")}"`);
    }
  }
  editor.addEventListener("DOMCharacterDataModified", onCharacterDataModified, { once: true });
  editor.focus();
  selection.selectAllChildren(document.getElementById("inline"));
  document.execCommand("insertHTML", false, "text");
  // This expected result is just same as the result of Chrome.
  // If the spec says this is wrong, feel free to change this result.
  todo_is(editor.innerHTML, "\n<!-- --><span id=\"inline\">text</span>",
          "The 'foo' should be replaced with 'text' and whitespaces before the span element should be removed");
  SimpleTest.finish();
});
</script>
</pre>
</body>
</html>