layout/style/test/test_bug319381.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=319381
   5 -->
   6 <head>
   7   <title>Test for Bug 319381</title>
   8   <script src="/tests/SimpleTest/SimpleTest.js"></script>
   9   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
  10 </head>
  11 <body>
  12 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=319381">Mozilla Bug 319381</a>
  13 <p id="display"></p>
  14 <div id="content" style="display: none">
  15   <div id="t"></div>
  16 </div>
  17 <pre id="test">
  18 <script class="testbody" type="text/javascript">
  19
  20 /** Test for Bug 319381 **/
  21
  22 function c() {
  23   return document.defaultView.getComputedStyle($('t')).
  24     getPropertyValue("overflow");
  25 }
  26
  27 var vals = ["visible", "hidden", "auto", "scroll"];
  28 var mozVals = ["-moz-scrollbars-vertical", "-moz-scrollbars-horizontal"];
  29 var i, j;
  30
  31 for (i = 0; i < vals.length; ++i) {
  32   $('t').style.overflow = vals[i];
  33   is($('t').style.overflow, vals[i], "Roundtrip");
  34   is(c(), vals[i], "Simple property set");
  35 }
  36
  37 for (i = 0; i < vals.length; ++i) {
  38   for (j = 0; j < vals.length; ++j) {
  39     $('t').setAttribute("style",
  40                         "overflow-x: " + vals[i] + "; overflow-y: " + vals[j]);
  41     is($('t').style.getPropertyValue("overflow-x"), vals[i], "Roundtrip");
  42     is($('t').style.getPropertyValue("overflow-y"), vals[j], "Roundtrip");
  43
  44     if (i == j) {
  45       is($('t').style.overflow, vals[i], "Shorthand serialization");
  46     } else {
  47       is($('t').style.overflow, vals[i] + " " + vals[j], "Shorthand serialization");
  48     }
  49
  50     // "visible" overflow-x and overflow-y become "auto" in computed style if
  51     // the other direction is not also "visible".
  52     if (i == j || (vals[i] == "visible" && vals[j] == "auto")) {
  53       is(c(), vals[j], "Shorthand computation");
  54     } else if (vals[j] == "visible" && vals[i] == "auto") {
  55       is(c(), vals[i], "Shorthand computation");
  56     } else {
  57       let x = vals[i] == "visible" ? "auto" : vals[i];
  58       let y = vals[j] == "visible" ? "auto" : vals[j];
  59       is(c(), x + " " + y, "Shorthand computation");
  60     }
  61   }
  62 }
  63 </script>
  64 </pre>
  65 </body>
  66 </html>
  67