Bug 514667 - Let Mochitest run on IE

r=sayrer

testing/mochitest/tests/SimpleTest/SimpleTest.js

@@ -8,6 +8,10 @@
  *  * Support the Test.Simple API used by MochiKit, to be able to test MochiKit
  * itself against IE 5.5
  *
+ * NOTE: Pay attention to cross-browser compatibility in this file. For
+ * instance, do not use const or JS > 1.5 features which are not yet
+ * implemented everywhere.
+ *
 **/
 
 if (typeof(SimpleTest) == "undefined") {
@@ -549,7 +553,7 @@ var todo_is = SimpleTest.todo_is;
 var todo_isnot = SimpleTest.todo_isnot;
 var isDeeply = SimpleTest.isDeeply;
 
-const gOldOnError = window.onerror;
+var gOldOnError = window.onerror;
 window.onerror = function simpletestOnerror(errorMsg, url, lineNumber) {
   var funcIdentifier = "[SimpleTest/SimpleTest.js, window.onerror] ";
 

testing/mochitest/tests/SimpleTest/TestRunner.js

@@ -201,7 +201,9 @@ TestRunner.countResults = function(doc) {
 }
 
 TestRunner.updateUI = function() {
-  var results = TestRunner.countResults($('testframe').contentDocument);
+  var testFrame = $('testframe');
+  var results = TestRunner.countResults(testFrame.contentDocument ||
+                                        testFrame.contentWindow.document);
   var passCount = parseInt($("pass-count").innerHTML) + results.OK;
   var failCount = parseInt($("fail-count").innerHTML) + results.notOK;
   var todoCount = parseInt($("todo-count").innerHTML) + results.todo;
@@ -227,9 +229,9 @@ TestRunner.updateUI = function() {
   var row = $(trID);
   var tds = row.getElementsByTagName("td");
   tds[0].style.backgroundColor = "#0d0";
-  tds[0].textContent = results.OK;
+  tds[0].innerHTML = results.OK;
   tds[1].style.backgroundColor = results.notOK > 0 ? "red" : "#0d0";
-  tds[1].textContent = results.notOK;
+  tds[1].innerHTML = results.notOK;
   tds[2].style.backgroundColor = results.todo > 0 ? "orange" : "#0d0";
-  tds[2].textContent = results.todo;
+  tds[2].innerHTML = results.todo;
 }