test_cascade.html - mozsearch

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<html>

<head>

  <title>Test for Author style sheet aspects of CSS cascading</title>

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

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

  <style type="text/css">

  </style>

</head>

<body id="thebody">

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=">Mozilla Bug </a>

<div class="content_class" id="content" style="position:relative"></div>

<pre id="test">

<script class="testbody" type="text/javascript">

/** Test for Author style sheet aspects of CSS cascading **/

var style_element = document.createElement("style");

var style_contents = document.createTextNode("");

style_element.appendChild(style_contents);

document.getElementsByTagName("head")[0].appendChild(style_element);

var div = document.getElementById("content");

var cs = window.getComputedStyle(div);

var zindex = 0;

/**

 * Given the selectors |sel1| and |sel2|, in that order (the "order"

 * aspect of the cascade), with declarations that are !important if

 * |imp1|/|imp2| are true, assert that the one that wins in the

 * cascading order is given by |winning| (which must be either 1 or 2).

*/

function do_test(sel1, imp1, sel2, imp2, winning) {

  var ind1 = ++zindex;

  var ind2 = ++zindex;

  style_contents.data =

    sel1 + " { z-index: " + ind1 + (imp1 ? "!important" :"") + " } " +

    sel2 + " { z-index: " + ind2 + (imp2 ? "!important" :"") + " } ";

  var result = cs.zIndex;

  is(result, String((winning == 1) ? ind1 : ind2),

     "cascading of " + style_contents.data);

// Test order, and order combined with !important

do_test("div", false, "div", false, 2);

do_test("div", false, "div", true, 2);

do_test("div", true, "div", false, 1);

do_test("div", true, "div", true, 2);

// Test specificity on a single element

do_test("div", false, "div.content_class", false, 2);

do_test("div.content_class", false, "div", false, 1);

// Test specificity across elements

do_test("body#thebody div", false, "body div.content_class", false, 1);

do_test("body div.content_class", false, "body#thebody div", false, 2);

// Test specificity combined with !important

do_test("div.content_class", false, "div", false, 1);

do_test("div.content_class", true, "div", false, 1);

do_test("div.content_class", false, "div", true, 2);

do_test("div.content_class", true, "div", true, 1);

function do_test_greater(sel1, sel2) {

  do_test(sel1, false, sel2, false, 1);

  do_test(sel2, false, sel1, false, 2);

function do_test_equal(sel1, sel2) {

  do_test(sel1, false, sel2, false, 2);

  do_test(sel2, false, sel1, false, 2);

// Test specificity of contents of :not()

do_test_equal("div.content_class", "div:not(.wrong_class)");

do_test_greater("div.content_class.content_class", "div.content_class");

do_test_greater("div.content_class", "div");

do_test_greater("div:not(.wrong_class)", "div");

do_test_greater("div:not(.wrong_class):not(.wrong_class)",

                "div:not(.wrong_class)");

</script>

</pre>

</body>

</html>