The Tor Browser: layout/style/test/test_value_computation.html@141e0f1194b1 (annotated)

layout/style/test/test_value_computation.html@141e0f1194b1 (annotated)

layout/style/test/test_value_computation.html

Wed, 31 Dec 2014 07:16:47 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 07:16:47 +0100
branch: TOR_BUG_9701
changeset 3: 141e0f1194b1
permissions: -rw-r--r--

Revert simplistic fix pending revisit of Mozilla integration attempt.

 <!DOCTYPE HTML>
 <html>
 <!--
 -->
 <head>
   <title>Test for computation of values in property database</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.expectAssertions(9);
   SimpleTest.waitForExplicitFinish();
   SimpleTest.requestLongerTimeout(2);
   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 values in property database **/
 var gBadComputed = {
   // The CSS parser will accept these weird URLs. However, we'll fail to
   // resolve them when computing style, so we'll fall back to the initial
   // value ("none").
   "filter": [ "url('feed:javascript:5')", "blur(3px) url('feed:javascript:5') grayscale(50%)" ],
   // These values are treated as auto.
   "page-break-after": [ "avoid" ],
   "page-break-before": [ "avoid" ],
   // This is the only SVG-length property (i.e., length allowing
   // unitless lengths) whose initial value is zero.
   "stroke-dashoffset": [ "0", "-moz-objectValue" ],
 };
 var gBadComputedNoFrame = {
   // These are probably bogus tests...
   "border-radius": [ "0%", "calc(-1%)", "calc(0px) calc(0pt) calc(0%) calc(0em)" ],
   "border-bottom-left-radius": [ "0%", "calc(-1%)" ],
   "border-bottom-right-radius": [ "0%", "calc(-1%)" ],
   "border-top-left-radius": [ "0%", "calc(-1%)" ],
   "border-top-right-radius": [ "0%", "calc(-1%)" ],
   "-moz-margin-end": [ "0%", "calc(0% + 0px)", "calc(-1%)" ],
   "-moz-margin-start": [ "0%", "calc(0% + 0px)", "calc(-1%)" ],
   "-moz-outline-radius": [ "0%", "calc(-1%)", "calc(0px) calc(0pt) calc(0%) calc(0em)" ],
   "-moz-outline-radius-bottomleft": [ "0%", "calc(-1%)" ],
   "-moz-outline-radius-bottomright": [ "0%", "calc(-1%)" ],
   "-moz-outline-radius-topleft": [ "0%", "calc(-1%)" ],
   "-moz-outline-radius-topright": [ "0%", "calc(-1%)" ],
   "-moz-padding-end": [ "0%", "calc(0% + 0px)", "calc(-1%)" ],
   "-moz-padding-start": [ "0%", "calc(0% + 0px)", "calc(-1%)" ],
   "margin": [ "0% 0px 0em 0pt" ],
   "margin-bottom": [ "0%", "calc(0% + 0px)" ],
   "margin-left": [ "0%", "calc(0% + 0px)" ],
   "margin-right": [ "0%", "calc(0% + 0px)" ],
   "margin-top": [ "0%", "calc(0% + 0px)" ],
   "min-height": [ "calc(-1%)" ],
   "min-width": [ "calc(-1%)" ],
   "padding": [ "0% 0px 0em 0pt", "calc(0px) calc(0em) calc(-2px) calc(-1%)" ],
   "padding-bottom": [ "0%", "calc(0% + 0px)", "calc(-1%)" ],
   "padding-left": [ "0%", "calc(0% + 0px)", "calc(-1%)" ],
   "padding-right": [ "0%", "calc(0% + 0px)", "calc(-1%)" ],
   "padding-top": [ "0%", "calc(0% + 0px)", "calc(-1%)" ],
 };
 function xfail_value(property, value, is_initial, has_frame) {
   if ((property in gBadComputed) &&
       gBadComputed[property].indexOf(value) != -1)
     return true;
   if (!has_frame && (property in gBadComputedNoFrame) &&
       gBadComputedNoFrame[property].indexOf(value) != -1)
     return true;
   return false;
 }
 var gSwapInitialWhenHaveFrame = {
   // When there's a frame, '-moz-available' works out to the same as
   // 'auto' given the prerequisites of only 'display: block'.
   "width": [ "-moz-available" ],
 };
 function swap_when_frame(property, value) {
   return (property in gSwapInitialWhenHaveFrame) &&
          gSwapInitialWhenHaveFrame[property].indexOf(value) != -1;
 }
 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;
 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_value(property, val, is_initial)
 {
   var info = gCSSProperties[property];
   if (info.backend_only)
     return;
   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 && is_initial) {
     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);
   if (is_initial) {
     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 for values that are supposed to compute to the
   // initial value (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, val, "");
   var val_computed_n = get_computed_value(getComputedStyle(gElementN, ""), property);
   var val_computed_f = get_computed_value(getComputedStyle(gElementF, ""), property);
   isnot(val_computed_n, "",
         "should not get empty value for '" + property + ":" + val + "'");
   isnot(val_computed_f, "",
         "should not get empty value for '" + property + ":" + val + "'");
   if (is_initial) {
     (xfail_value(property, val, is_initial, false) ? todo_is : is)(
        val_computed_n, initial_computed_n,
        "should get initial value for '" + property + ":" + val + "'");
     (xfail_value(property, val, is_initial, true) ? todo_is : is)(
        val_computed_f, initial_computed_f,
        "should get initial value for '" + property + ":" + val + "'");
   } else {
     (xfail_value(property, val, is_initial, false) ? todo_isnot : isnot)(
        val_computed_n, initial_computed_n,
        "should not get initial value for '" + property + ":" + val + "' on elementn.");
     var swap = swap_when_frame(property, val);
     (xfail_value(property, val, is_initial, true) ? todo_isnot : (swap ? is : isnot))(
        val_computed_f, initial_computed_f,
        "should " + (swap ? "" : "not ") +
        "get initial value for '" + property + ":" + val + "' on elementf.");
   }
   if (is_initial)
     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 && is_initial) {
     gElementN.parentNode.style.removeProperty(property);
     gElementF.parentNode.style.removeProperty(property);
   }
   // FIXME: Something (maybe with the -moz-binding values) 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 test_property(prop) {
   var info = gCSSProperties[prop];
   for (var idx in info.initial_values)
     test_value(prop, info.initial_values[idx], true);
   for (var idx in info.other_values)
     test_value(prop, info.other_values[idx], false);
 }
 function run_tests() {
   setup_initial_values("unstyledn", "gInitialValuesN", "gInitialPrereqsRuleN");
   setup_initial_values("unstyledf", "gInitialValuesF", "gInitialPrereqsRuleF");
   var props = [];
   for (var prop in gCSSProperties)
     props.push(prop);
   props = props.reverse();
   function do_one() {
     if (props.length == 0) {
       SimpleTest.finish();
       return;
     }
     test_property(props.pop());
     SimpleTest.executeSoon(do_one);
   }
   SimpleTest.executeSoon(do_one);
 }
 load_done();
 </script>
 </pre>
 </body>
 </html>

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layout/style/test/test_value_computation.html@141e0f1194b1 (annotated)

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