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

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

layout/style/test/test_value_cloning.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>
 <!--
 https://bugzilla.mozilla.org/show_bug.cgi?id=375363
 -->
 <head>
   <title>Test for cloning of CSS property values (including 'inherit', 'initial' and 'unset')</title>
   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
   <script type="text/javascript" src="property_database.js"></script>
   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
 </head>
 <body>
 <p id="display"><iframe id="iframe" src="about:blank"></iframe></p>
 <pre id="test">
 <script class="testbody" type="text/javascript">
 /** Test for cloning of CSS property values (including 'inherit', 'initial' and 'unset') **/
 var gTestUnset = SpecialPowers.getBoolPref("layout.css.unset-value.enabled");
 var test_queue = [];
 var iframe = document.getElementById("iframe");
 SimpleTest.waitForExplicitFinish();
 for (var prop in gCSSProperties) {
   var info = gCSSProperties[prop];
   test_queue.push({ prop: prop, value: "inherit",
                     inherited_value: info.initial_values[0] });
   test_queue.push({ prop: prop, value: "inherit",
                     inherited_value: info.other_values[0] });
   test_queue.push({ prop: prop, value: "initial" });
   if (gTestUnset) {
     if (info.inherited) {
       test_queue.push({ prop: prop, value: "unset",
                         inherited_value: info.initial_values[0] });
       test_queue.push({ prop: prop, value: "unset",
                         inherited_value: info.other_values[0] });
     } else {
       test_queue.push({ prop: prop, value: "unset" });
     }
   }
   for (var idx in info.initial_values) {
     test_queue.push({ prop: prop, value: info.initial_values[idx] });
   }
   for (var idx in info.other_values) {
     test_queue.push({ prop: prop, value: info.other_values[idx] });
   }
 }
 test_queue.reverse();
 doTest();
 function doTest()
 {
   var sheet_data = "";
   for (var idx = 0; idx < test_queue.length; ++idx) {
     var current_item = test_queue[idx];
     var info = gCSSProperties[current_item.prop];
     sheet_data += "#parent"+idx+", #test"+idx+" { ";
     for (var prereq in info.prereqs) {
       sheet_data += prereq + ": " + info.prereqs[prereq] + ";";
     }
     sheet_data += " }";
     sheet_data += "#parent"+idx+" { ";
     if ("inherited_value" in current_item) {
       sheet_data += current_item.prop + ": " + current_item.inherited_value;
     }
     sheet_data += "}";
     sheet_data += "#test"+idx+" { ";
     sheet_data += current_item.prop + ": " + current_item.value;
     sheet_data += "}";
   }
   var sheet_url = "data:text/css," + escape(sheet_data);
   var doc_data =
     "<!DOCTYPE HTML>\n" +
     "<link rel='stylesheet' type='text/css' href='" + sheet_url + "'>\n" +
     "<link rel='stylesheet' type='text/css' href='" + sheet_url + "'>\n" +
     "<body>\n";
   for (var idx = 0; idx < test_queue.length; ++idx) {
     var current_item = test_queue[idx];
     if ("inherited_value" in current_item) {
       doc_data += "<span id='parent"+idx+"'>";
     }
     doc_data += "<span id='test"+idx+"'></span>";
     if ("inherited_value" in current_item) {
       doc_data += "</span>";
     }
   }
   var doc_url = "data:text/html," + escape(doc_data);
   iframe.onload = iframe_loaded;
   iframe.src = doc_url;
 }
 function iframe_loaded(event)
 {
   if (event.target != iframe)
     return;
   var start_ser = [];
   var start_compute = [];
   var test_cs = [];
   var ifdoc = iframe.contentDocument;
   for (var idx = 0; idx < test_queue.length; ++idx) {
     var current_item = test_queue[idx];
     var info = gCSSProperties[current_item.prop];
     var test = ifdoc.getElementById("test" + idx);
     var cur_cs = iframe.contentWindow.getComputedStyle(test, "");
     test_cs.push(cur_cs);
     var cur_ser = ifdoc.styleSheets[0].cssRules[3*idx+2].style.getPropertyValue(current_item.prop);
     if (cur_ser == "") {
       isnot(cur_ser, "",
 	    "serialization should be nonempty for " +
 	    current_item.prop + ": " + current_item.value);
     }
     start_ser.push(cur_ser);
     var cur_compute;
     if (!("backend_only" in info)) {
       cur_compute = get_computed_value(cur_cs, current_item.prop);
       if (cur_compute == "") {
 	isnot(cur_compute, "",
 	      "computed value should be nonempty for " +
 	      current_item.prop + ": " + current_item.value);
       }
     } else {
       cur_compute = undefined;
     }
     start_compute.push(cur_compute);
   }
   // In case the above access didn't force a clone already (though it
   // currently does), clone the second style sheet's inner and then
   // remove the first.
   ifdoc.styleSheets[1].insertRule("#nonexistent { color: red }", 0);
   var firstlink = ifdoc.getElementsByTagName("link")[0];
   firstlink.parentNode.removeChild(firstlink);
   // Force a flush
   ifdoc.body.style.display="none";
   var ow = ifdoc.body.offsetWidth;
   ifdoc.body.style.display="";
   for (var idx = 0; idx < test_queue.length; ++idx) {
     var current_item = test_queue[idx];
     var info = gCSSProperties[current_item.prop];
     var end_ser =
       ifdoc.styleSheets[0].cssRules[3*idx+3].style.getPropertyValue(current_item.prop);
     is(end_ser, start_ser[idx],
        "serialization should match when cloning " +
        current_item.prop + ": " + current_item.value);
     if (!("backend_only" in info)) {
       var end_compute = get_computed_value(test_cs[idx], current_item.prop);
       // Output computed values only when the test failed.
       // Computed values may be very long.
       if (end_compute == start_compute[idx]) {
         ok(true,
            "computed values should match when cloning " +
            current_item.prop + ": " + current_item.value);
       } else {
         is(end_compute, start_compute[idx],
            "computed values should match when cloning " +
            current_item.prop + ": " + current_item.value);
       }
     }
   }
   SimpleTest.finish();
 }
 </script>
 </pre>
 </body>
 </html>

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

layout/style/test/test_value_cloning.html