The Tor Browser: layout/style/test/test_initial_computation.html@8bccb770b82d (annotated)

layout/style/test/test_initial_computation.html@8bccb770b82d (annotated)

layout/style/test/test_initial_computation.html

Wed, 31 Dec 2014 13:27:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 13:27:57 +0100
branch: TOR_BUG_3246
changeset 6: 8bccb770b82d
permissions: -rw-r--r--

Ignore runtime configuration files generated during quality assurance.

 <!DOCTYPE HTML>
 <html>
 <!--
 -->
 <head>
   <title>Test for computation of CSS 'initial' on all properties and 'unset' on reset properties</title>
   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
   <script type="text/javascript" src="property_database.js"></script>
   <style type="text/css" id="stylesheet"></style>
   <style type="text/css">
   /* For 'width', 'height', etc., need a constant size container. */
   #display { width: 500px; height: 200px }
   </style>
   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
   <script type="text/javascript">
   SimpleTest.waitForExplicitFinish();
   var load_count = 0;
   function load_done() {
     if (++load_count == 3)
       run_tests();
   }
   </script>
 </head>
 <body>
 <p id="display"><span><span id="elementf"></span></span>
 <iframe id="unstyledn" src="unstyled.xml" height="10" width="10" onload="load_done()"></iframe>
 <iframe id="unstyledf" src="unstyled-frame.xml" height="10" width="10" onload="load_done()"></iframe>
 </p>
 <div id="content" style="display: none">
 <div><span id="elementn"></span></div>
 </div>
 <pre id="test">
 <script class="testbody" type="text/javascript">
 /** Test for computation of CSS 'initial' on all properties and 'unset' on
     reset properties **/
 var gBrokenInitial = {
 };
 function xfail_initial(property) {
   return property in gBrokenInitial;
 }
 var gElementN = document.getElementById("elementn");
 var gElementF = document.getElementById("elementf");
 var gStyleSheet = document.getElementById("stylesheet").sheet;
 var gRule1 = gStyleSheet.cssRules[gStyleSheet.insertRule("#elementn, #elementf {}", gStyleSheet.cssRules.length)];
 var gRule2 = gStyleSheet.cssRules[gStyleSheet.insertRule("#elementn, #elementf {}", gStyleSheet.cssRules.length)];
 var gInitialValuesN;
 var gInitialValuesF;
 var gInitialPrereqsRuleN;
 var gInitialPrereqsRuleF;
 var gTestUnset = SpecialPowers.getBoolPref("layout.css.unset-value.enabled");
 function setup_initial_values(id, ivalprop, prereqprop) {
   var iframe = document.getElementById(id);
   window[ivalprop] = iframe.contentWindow.getComputedStyle(
                        iframe.contentDocument.documentElement.firstChild, "");
   var sheet = iframe.contentDocument.styleSheets[0];
   // For 'width', 'height', etc., need a constant size container.
   sheet.insertRule(":root { height: 200px; width: 500px }", sheet.cssRules.length);
   window[prereqprop] = sheet.cssRules[sheet.insertRule(":root > * {}", sheet.cssRules.length)];
 }
 function test_property(property)
 {
   var info = gCSSProperties[property];
   if (info.backend_only)
     return;
   var keywords = ["initial"];
   if (!info.inherited && gTestUnset)
     keywords.push("unset");
   keywords.forEach(function(keyword) {
     if ("prerequisites" in info) {
       var prereqs = info.prerequisites;
       for (var prereq in prereqs) {
         gRule1.style.setProperty(prereq, prereqs[prereq], "");
         gInitialPrereqsRuleN.style.setProperty(prereq, prereqs[prereq], "");
         gInitialPrereqsRuleF.style.setProperty(prereq, prereqs[prereq], "");
       }
     }
     if (info.inherited) {
       gElementN.parentNode.style.setProperty(property, info.other_values[0], "");
       gElementF.parentNode.style.setProperty(property, info.other_values[0], "");
     }
     var initial_computed_n = get_computed_value(gInitialValuesN, property);
     var initial_computed_f = get_computed_value(gInitialValuesF, property);
     gRule1.style.setProperty(property, info.other_values[0], "");
     var other_computed_n = get_computed_value(getComputedStyle(gElementN, ""), property);
     var other_computed_f = get_computed_value(getComputedStyle(gElementF, ""), property);
     isnot(other_computed_n, initial_computed_n,
           "should be testing with values that compute to different things " +
           "for '" + property + "'");
     isnot(other_computed_f, initial_computed_f,
           "should be testing with values that compute to different things " +
           "for '" + property + "'");
     // It's important (given the current design of nsRuleNode) that we're
     // modifying the most specific rule that matches the element, and that
     // we've already requested style while that rule was empty.  This
     // means we'll have a cached aStartStruct from the parent in the rule
     // tree (caching the "other" value), so we'll make sure we don't get
     // the initial value from the luck of default-initialization.
     // This means that it's important that we set the prereqs on
     // gRule1.style rather than on gElement.style.
     gRule2.style.setProperty(property, keyword, "");
     var initial_val_computed_n = get_computed_value(getComputedStyle(gElementN, ""), property);
     var initial_val_computed_f = get_computed_value(getComputedStyle(gElementF, ""), property);
     (xfail_initial(property) ? todo_is : is)(
        initial_val_computed_n, initial_computed_n,
        keyword + " should cause initial value for '" + property + "'");
     (xfail_initial(property) ? todo_is : is)(
        initial_val_computed_f, initial_computed_f,
        keyword + " should cause initial value for '" + property + "'");
     gRule1.style.removeProperty(property);
     gRule2.style.removeProperty(property);
     if ("prerequisites" in info) {
       var prereqs = info.prerequisites;
       for (var prereq in prereqs) {
         gRule1.style.removeProperty(prereq);
         gInitialPrereqsRuleN.style.removeProperty(prereq);
         gInitialPrereqsRuleF.style.removeProperty(prereq);
       }
     }
     if (info.inherited) {
       gElementN.parentNode.style.removeProperty(property);
       gElementF.parentNode.style.removeProperty(property);
     }
     // FIXME: Something (maybe with the -moz-binding values in
     // test_value_computation.html, but may as well do it here to match)
     // causes gElementF's frame to get lost.  Force it to get recreated
     // after each property.
     gElementF.parentNode.style.display = "none";
     get_computed_value(getComputedStyle(gElementF, ""), "width");
     gElementF.parentNode.style.display = "";
     get_computed_value(getComputedStyle(gElementF, ""), "width");
   });
 }
 function run_tests() {
   setup_initial_values("unstyledn", "gInitialValuesN", "gInitialPrereqsRuleN");
   setup_initial_values("unstyledf", "gInitialValuesF", "gInitialPrereqsRuleF");
   for (var prop in gCSSProperties)
     test_property(prop);
   SimpleTest.finish();
 }
 load_done();
 </script>
 </pre>
 </body>
 </html>

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layout/style/test/test_initial_computation.html@8bccb770b82d (annotated)

layout/style/test/test_initial_computation.html