tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

test_bug394057.html (2555B)

      1 <!DOCTYPE HTML>
      2 <html lang="en">
      3 <!--
      4 https://bugzilla.mozilla.org/show_bug.cgi?id=394057
      5 -->
      6 <head>
      7  <title>Test for Bug 394057</title>
      8  <script src="/tests/SimpleTest/SimpleTest.js"></script>
      9  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
     10  <style type="text/css">
     11 
     12  #display { background: yellow; color: black; font-family: serif; }
     13 
     14  </style>
     15 </head>
     16 <body>
     17 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=394057">Mozilla Bug 394057</a>
     18 <table id="display"><tr><td>MmMmMm...iiiIIIlll---</td></tr></table>
     19 <div id="content" style="display: none">
     20  
     21 </div>
     22 <pre id="test">
     23 <script class="testbody" type="text/javascript">
     24 
     25 /** Test for Bug 394057 */
     26 
     27 SimpleTest.waitForExplicitFinish();
     28 
     29 var tableElement = document.getElementById("display");
     30 
     31 var CC = SpecialPowers.Cc;
     32 var CI = SpecialPowers.Ci;
     33 
     34 var fe =
     35  CC["@mozilla.org/gfx/fontenumerator;1"].createInstance(CI.nsIFontEnumerator);
     36 var serifFonts = fe.EnumerateFonts("x-western", "serif");
     37 var monospaceFonts = fe.EnumerateFonts("x-western", "monospace");
     38 
     39 function table_width_for_font(font) {
     40  tableElement.style.fontFamily = '"' + font + '"';
     41  var result = tableElement.offsetWidth;
     42  tableElement.style.fontFamily = "";
     43  return result;
     44 }
     45 
     46 var serifIdx = 0;
     47 var monospaceIdx = 0;
     48 var monospaceWidth, serifWidth;
     49 monospaceWidth = table_width_for_font(monospaceFonts[monospaceIdx]);
     50 for (serifIdx in serifFonts) {
     51  serifWidth = table_width_for_font(serifFonts[serifIdx]);
     52  if (serifWidth != monospaceWidth)
     53    break;
     54 }
     55 if (serifWidth == monospaceWidth) {
     56  for (monospaceIdx in monospaceFonts) {
     57    monospaceWidth = table_width_for_font(monospaceFonts[monospaceIdx]);
     58    if (serifWidth != monospaceWidth)
     59      break;
     60  }
     61 }
     62 
     63 isnot(serifWidth, monospaceWidth,
     64      "can't find serif and monospace fonts of different width");
     65 
     66 SpecialPowers.pushPrefEnv({'set': [['font.name.serif.x-western', serifFonts[serifIdx]]]}).then(step2);
     67 
     68 var serifWidthFromPref;
     69 function step2() {
     70    serifWidthFromPref = tableElement.offsetWidth;
     71    SpecialPowers.pushPrefEnv({'set': [['font.name.serif.x-western', monospaceFonts[monospaceIdx]]]}).then(step3);
     72 }
     73 var monospaceWidthFromPref;
     74 function step3() {
     75    monospaceWidthFromPref = tableElement.offsetWidth;
     76 
     77    is(serifWidthFromPref, serifWidth,
     78       "changing font pref should change width of table (serif)");
     79    is(monospaceWidthFromPref, monospaceWidth,
     80       "changing font pref should change width of table (monospace)");
     81    SimpleTest.finish();
     82 }
     83 
     84 </script>
     85 </pre>
     86 </body>
     87 </html>