layout/style/test/test_bug401046.html

   1 <!DOCTYPE HTML>
   2 <html lang="en">
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=401046
   5 -->
   6 <head>
   7   <title>Test for Bug 401046</title>
   8   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   9   <script src="/tests/SimpleTest/SimpleTest.js"></script>
  10   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
  11   <style type="text/css">
  12
  13   #display span { margin-bottom: 1em; }
  14
  15   </style>
  16 </head>
  17 <body>
  18 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=401046">Mozilla Bug 401046</a>
  19 <p id="display" lang="zh-Hans">
  20   <span id="s0" style="font-size: 0">汉字</span>
  21   <span id="s4" style="font-size: 4px">汉字</span>
  22   <span id="s12" style="font-size: 12px">汉字</span>
  23   <span id="s28" style="font-size: 28px">汉字</span>
  24 </p>
  25 <div id="content" style="display: none">
  26
  27 </div>
  28 <pre id="test">
  29 <script class="testbody" type="text/javascript">
  30
  31 /** Test for Bug 401046 **/
  32
  33 SimpleTest.waitForExplicitFinish();
  34
  35 var elts = [
  36   document.getElementById("s0"),
  37   document.getElementById("s4"),
  38   document.getElementById("s12"),
  39   document.getElementById("s28")
  40 ];
  41
  42 function fs(idx) {
  43   // The computed font size actually *doesn't* currently reflect the
  44   // minimum font size preference, but things in em units do.  Not sure
  45   // if this is how it ought to be...
  46   return getComputedStyle(elts[idx], "").marginBottom;
  47 }
  48
  49 SpecialPowers.pushPrefEnv({'clear': [['font.minimum-size.zh-CN']]}, step1);
  50
  51 function step1() {
  52     is(fs(0), "0px", "at min font size 0, 0px should compute to 0px");
  53     is(fs(1), "4px", "at min font size 0, 4px should compute to 4px");
  54     is(fs(2), "12px", "at min font size 0, 12px should compute to 12px");
  55     is(fs(3), "28px", "at min font size 0, 28px should compute to 28px");
  56
  57     SpecialPowers.pushPrefEnv({'set': [['font.minimum-size.zh-CN', 7]]}, step2);
  58 }
  59
  60 function step2() {
  61     is(fs(0), "0px", "at min font size 7, 0px should compute to 0px");
  62     is(fs(1), "7px", "at min font size 7, 4px should compute to 7px");
  63     is(fs(2), "12px", "at min font size 7, 12px should compute to 12px");
  64     is(fs(3), "28px", "at min font size 7, 28px should compute to 28px");
  65
  66     SpecialPowers.pushPrefEnv({'set': [['font.minimum-size.zh-CN', 18]]}, step3);
  67 }
  68
  69 function step3() {
  70     is(fs(0), "0px", "at min font size 18, 0px should compute to 0px");
  71     is(fs(1), "18px", "at min font size 18, 4px should compute to 18px");
  72     is(fs(2), "18px", "at min font size 18, 12px should compute to 18px");
  73     is(fs(3), "28px", "at min font size 18, 28px should compute to 28px");
  74
  75     SpecialPowers.pushPrefEnv({'clear': [['font.minimum-size.zh-CN']]}, SimpleTest.finish);
  76 }
  77
  78 </script>
  79 </pre>
  80 </body>
  81 </html>
  82