tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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test_system_font_serialization.html (2510B)

      1 <!DOCTYPE HTML>
      2 <html>
      3 <!--
      4 https://bugzilla.mozilla.org/show_bug.cgi?id=475214
      5 -->
      6 <head>
      7  <title>Test for Bug 475214</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=475214">Mozilla Bug 475214</a>
     13 <p id="display"></p>
     14 <div id="content">
     15  
     16 </div>
     17 <pre id="test">
     18 <script type="application/javascript">
     19 
     20 /* Helper copied from property_database.js */
     21 function IsCSSPropertyPrefEnabled(prefName)
     22 {
     23  try {
     24    if (SpecialPowers.getBoolPref(prefName)) {
     25      return true;
     26    }
     27  } catch (ex) {
     28    ok(false, "Failed to look up property-controlling pref '" +
     29       prefName + "' (" + ex + ")");
     30  }
     31 
     32  return false;
     33 }
     34 
     35 /** Test for Bug 475214 */
     36 
     37 var e = document.getElementById("content");
     38 var s = e.style;
     39 
     40 e.style.font = "menu";
     41 is(e.style.cssText, "font: menu;", "serialize system font alone");
     42 is(e.style.font, "menu", "font getter returns value");
     43 
     44 e.style.fontFamily = "inherit";
     45 is(e.style.font, "", "font getter should be empty");
     46 
     47 e.style.font = "message-box";
     48 is(e.style.cssText, "font: message-box;", "serialize system font alone");
     49 is(e.style.font, "message-box", "font getter returns value");
     50 
     51 e.setAttribute("style", "font-weight:bold;font:caption;line-height:3;");
     52 is(e.style.font, "", "font getter should be empty");
     53 
     54 e.setAttribute("style", "font: menu; font-weight: -moz-use-system-font");
     55 is(e.style.cssText, "font: menu;", "serialize system font alone");
     56 is(e.style.font, "menu", "font getter returns value");
     57 
     58 e.setAttribute("style", "font: inherit; font-family: Helvetica;");
     59 EXPECTED_DECLS = [
     60  "font-family: Helvetica;",
     61  "font-feature-settings: inherit;",
     62  "font-kerning: inherit;",
     63  "font-language-override: inherit;",
     64  "font-size-adjust: inherit;",
     65  "font-size: inherit;",
     66  "font-stretch: inherit;",
     67  "font-style: inherit;",
     68  "font-variant: inherit;",
     69  "font-weight: inherit;",
     70  "line-height: inherit;",
     71 ];
     72 if (IsCSSPropertyPrefEnabled("layout.css.font-variations.enabled")) {
     73  EXPECTED_DECLS.push("font-optical-sizing: inherit;");
     74  EXPECTED_DECLS.push("font-variation-settings: inherit;");
     75 }
     76 EXPECTED_DECLS = EXPECTED_DECLS.sort().join(" ");
     77 let sortedDecls = e.style.cssText.split(/ (?=font-|line-)/).sort().join(" ");
     78 is(sortedDecls, EXPECTED_DECLS, "don't serialize system font for font:inherit");
     79 is(e.style.font, "", "font getter returns nothing");
     80 
     81 </script>
     82 </pre>
     83 </body>
     84 </html>