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 type="text/javascript" src="/MochiKit/MochiKit.js"></script>
  10   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  11   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
  12   <style type="text/css">
  13
  14   #display span { margin-bottom: 1em; }
  15
  16   </style>
  17 </head>
  18 <body>
  19 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=401046">Mozilla Bug 401046</a>
  20 <!-- FIXME tried changing the zh-CN pref instead of x-western, but the language
  21      is based only on the document *charset* -->
  22 <!--
  23 <p id="display" lang="zh-Hans">
  24   <span id="s0" style="font-size: 0">汉字</span>
  25   <span id="s4" style="font-size: 4px">汉字</span>
  26   <span id="s12" style="font-size: 12px">汉字</span>
  27   <span id="s28" style="font-size: 28px">汉字</span>
  28 </p>
  29 -->
  30 <p id="display">
  31   <span id="s0" style="font-size: 0">Ép</span>
  32   <span id="s4" style="font-size: 4px">Ép</span>
  33   <span id="s12" style="font-size: 12px">Ép</span>
  34   <span id="s28" style="font-size: 28px">Ép</span>
  35 </p>
  36 <div id="content" style="display: none">
  37
  38 </div>
  39 <pre id="test">
  40 <script class="testbody" type="text/javascript">
  41
  42 /** Test for Bug 401046 **/
  43
  44 SimpleTest.waitForExplicitFinish();
  45
  46 var elts = [
  47   document.getElementById("s0"),
  48   document.getElementById("s4"),
  49   document.getElementById("s12"),
  50   document.getElementById("s28")
  51 ];
  52
  53 function fs(idx) {
  54   // The computed font size actually *doesn't* currently reflect the
  55   // minimum font size preference, but things in em units do.  Not sure
  56   // if this is how it ought to be...
  57   return getComputedStyle(elts[idx], "").marginBottom;
  58 }
  59
  60 netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');
  61 var CC = Components.classes;
  62 var CI = Components.interfaces;
  63 var prefs =
  64   CC["@mozilla.org/preferences-service;1"].getService(CI.nsIPrefBranch);
  65
  66 try {
  67     prefs.clearUserPref('font.minimum-size.x-western');
  68 } catch (ex) {
  69     // throws if it wasn't already set
  70 }
  71
  72 // preference change is async (although one setTimeout might be enough?)
  73 setTimeout(setTimeout, 0, step1, 0);
  74
  75 function step1() {
  76     netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');
  77
  78     is(fs(0), "0px", "at min font size 0, 0px should compute to 0px");
  79     is(fs(1), "4px", "at min font size 0, 4px should compute to 4px");
  80     is(fs(2), "12px", "at min font size 0, 12px should compute to 12px");
  81     is(fs(3), "28px", "at min font size 0, 28px should compute to 28px");
  82
  83     prefs.setIntPref('font.minimum-size.x-western', 7);
  84
  85     // preference change is async (although one setTimeout might be enough?)
  86     setTimeout(setTimeout, 0, step2, 0);
  87 }
  88
  89 function step2() {
  90     netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');
  91
  92     is(fs(0), "0px", "at min font size 7, 0px should compute to 0px");
  93     is(fs(1), "7px", "at min font size 7, 4px should compute to 7px");
  94     is(fs(2), "12px", "at min font size 7, 12px should compute to 12px");
  95     is(fs(3), "28px", "at min font size 7, 28px should compute to 28px");
  96
  97     prefs.setIntPref('font.minimum-size.x-western', 18);
  98
  99     // preference change is async (although one setTimeout might be enough?)
 100     setTimeout(setTimeout, 0, step3, 0);
 101 }
 102
 103 function step3() {
 104     netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');
 105
 106     is(fs(0), "0px", "at min font size 18, 0px should compute to 0px");
 107     is(fs(1), "18px", "at min font size 18, 4px should compute to 18px");
 108     is(fs(2), "18px", "at min font size 18, 12px should compute to 18px");
 109     is(fs(3), "28px", "at min font size 18, 28px should compute to 28px");
 110
 111     prefs.clearUserPref('font.minimum-size.x-western');
 112
 113     SimpleTest.finish();
 114 }
 115
 116 </script>
 117 </pre>
 118 </body>
 119 </html>
 120