test_bug1785739.html

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<!DOCTYPE html>

<meta charset="utf-8">

<title>nsFind::Find() should initialize the editor</title>

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

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

<input value="1abc1

              2abc2

              3abc3

              4abc4

              5abc5

              6abc6

              7abc7

              8abc8

              9abc9" id="input">

<script>

  SimpleTest.waitForExplicitFinish();

  // The current window.find() impl does not support text controls, so import the internal component

  const finder =

    SpecialPowers

      .Cc["@mozilla.org/typeaheadfind;1"]

      .getService(SpecialPowers.Ci.nsITypeAheadFind);

  finder.init(SpecialPowers.wrap(window).docShell);

  function find() {

    return finder.find(

      "abc",

      false,

      SpecialPowers.Ci.nsITypeAheadFind.FIND_NEXT,

      true);

  async function runTests() {

    finder.find("abc", false, SpecialPowers.Ci.nsITypeAheadFind.FIND_FIRST, true);

    // Wait until layout flush as the bug repro needs it

    await new Promise(requestAnimationFrame);

    for (let i = 0; i < 9; i++) {

      find();

      await new Promise(requestAnimationFrame);

      is(input.selectionStart, (i * 19) + 1);

    SimpleTest.finish();

  window.addEventListener("load", runTests);

</script>