css/css-pseudo/active-selection-054.html

<!DOCTYPE html>

  <meta charset="UTF-8">

  <title>CSS Pseudo-Elements Test: active selection and invalid background-color value</title>

  <link rel="author" title="G&eacute;rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
  <link rel="help" href="https://www.w3.org/TR/css-pseudo-4/#highlight-cascade">
  <link rel="match" href="active-selection-051-ref.html">

  <meta content="invalid should" name="flags">
  <meta name="assert" content="In this test, 'background-color' has an invalid value which makes the declaration invalid; therefore, it is ignored. Therefore, the div::selection selector has neither color nor background-color specified. In such case, the UA should use the OS-default highlight colors for div::selection.">

  <style>
  div
    {
      color: transparent;
      font-size: 300%;
    }

  div::selection
    {
      background-color: bar;
    }
  </style>

  <script>
  function startTest()
  {
  var targetRange = document.createRange();
  /* We first create an empty range */
  targetRange.selectNodeContents(document.getElementById("test"));
  /* Then we set the range boundaries to the children of div#test */
  window.getSelection().addRange(targetRange);
  /* Finally, we now select such range of content */
  }
  </script>

  <body onload="startTest();">

  <p>Test passes if "Selected Text" appears selected using the OS selection colors.

  <div id="test">Selected Text</div>