layout/style/test/test_placeholder_restrictions.html
author Sandor Molnar <smolnar@mozilla.com>
Thu, 16 Sep 2021 18:58:41 +0300
changeset 592155 d952541c136fa93474dc3f3d76f4afcd86100f2e
parent 582014 012f302cf03b3f4ab7cf94aff7f487bcc1608e36
permissions -rw-r--r--
Merge autoland to mozilla-central. a=merge

<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1382786
-->
<head>
  <meta charset="utf-8">
  <title>Test for Bug 1382786</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="text/javascript" src="property_database.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  <style id="s"></style>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1382786">Mozilla Bug 1382786</a>
<p id="display"></p>
<div id="content" style="display: none">

</div>
<input id="test">
<input id="control">
<script type="application/javascript">

/** Test for Bug 1382786 **/
var test = getComputedStyle($("test"), "::placeholder");
var control = getComputedStyle($("control"), "::placeholder");
for (let prop in gCSSProperties) {
  var info = gCSSProperties[prop];
  if (info.type == CSS_TYPE_TRUE_SHORTHAND) {
    // Can't get useful info out of getComputedStyle.
    continue;
  }
  let prereqs = "";
  if (info.prerequisites) {
    for (let name in info.prerequisites) {
      prereqs += `${name}: ${info.prerequisites[name]}; `;
    }
  }
  $("s").textContent = `
    #control::placeholder { ${prop}: ${info.initial_values[0]}; ${prereqs} }
    #test::placeholder { ${prop}: ${info.other_values[0]}; ${prereqs} }
  `;
  // line-height does apply to ::placeholder, but only on <textarea>. We could
  // switch the test to use a <textarea> but then we'd need the same special-case
  // for white-space.
  if (info.applies_to_placeholder && prop != "line-height") {
    isnot(get_computed_value(test, prop),
          get_computed_value(control, prop),
          `${prop} should apply to ::placeholder`);
  } else {
    is(get_computed_value(test, prop),
       get_computed_value(control, prop),
       `${prop} should not apply to ::placeholder`);
  }
}
</script>
</body>
</html>