test_mailcite_keep_trailing_br_after_delete.html

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<!doctype html>

<html>

<head>

<meta charset="utf-8">

<title>Trailing &lt;br&gt; of a mailcite which is a blocked &lt;span&gt;</title>

<script src="/tests/SimpleTest/SimpleTest.js"></script>

<link rel="stylesheet" href="/tests/SimpleTest/test.css">

<script>

"use strict";

SimpleTest.waitForExplicitFinish();

SimpleTest.waitForFocus(async () => {

  const iframe = document.querySelector("iframe");

  await new Promise(resolve => {

    if (iframe.contentDocument?.readyState == "complete") {

      resolve();

      return;

    iframe.addEventListener("load", resolve, {once: true});

});

  const win = iframe.contentWindow;

  getEditor(win).flags |=

    SpecialPowers.Ci.nsIEditor.eEditorMailMask | SpecialPowers.Ci.nsIEditor.eEditorPlaintextMask;

  const doc = iframe.contentDocument;

  const mailEditor = getEditorMailSupport(win);

  win.focus();

  doc.body.focus();

  const mailciteStyle = "white-space: pre-wrap; display: block; width: 98vw;";

  const mailcite = SpecialPowers.unwrap(

    mailEditor.insertAsCitedQuotation("Hi there,\nHow are you doing.", "", false)

);

is(

    doc.body.innerHTML,

    `<span style="${mailciteStyle}">&gt; Hi there,<br>&gt; How are you doing.<br><br></span><br><br>`,

    "nsIEditorMailSupport.insertAsCitedQuotation() should insert a mailcite span"

);

  // Delete the second line.

  win.getSelection().setBaseAndExtent(

    mailcite.firstChild,

    mailcite.firstChild.length,

    mailcite.parentNode,

);

  doc.execCommand("delete");

  // Then, move caret outside the mailcite and type a character.

  win.getSelection().modify("move", "forward", "line");

  doc.execCommand("insertText", false, "m");

is(

    doc.body.innerHTML,

    `<span style="${mailciteStyle}">&gt; Hi there,<br></span>m`,

    "insert paragraph should split the mailcite and put <br> to the end of it"

);

  SimpleTest.finish();

});

function getEditor(aWindow) {

  const editingSession = SpecialPowers.wrap(aWindow).docShell.editingSession;

  return editingSession.getEditorForWindow(aWindow);

function getEditorMailSupport(aWindow) {

  return getEditor(aWindow).QueryInterface(SpecialPowers.Ci.nsIEditorMailSupport);

</script>

</head>

<body>

  <iframe srcdoc="<body contenteditable><br><br></body>"></iframe>

</body>

</html>