diff -r 000000000000 -r 6474c204b198 docshell/test/browser/browser_bug234628-8.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/docshell/test/browser/browser_bug234628-8.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,23 @@
+function test() {
+  waitForExplicitFinish();
+
+  var rootDir = "http://mochi.test:8888/browser/docshell/test/browser/";
+  gBrowser.selectedTab = gBrowser.addTab(rootDir + "file_bug234628-8.html");
+  gBrowser.selectedBrowser.addEventListener("load", afterOpen, true);
+}
+
+function afterOpen(event) {
+  if (event.target != gBrowser.contentDocument) {
+    return;
+  }
+
+  gBrowser.selectedBrowser.removeEventListener("load", afterOpen, true);
+
+  is(gBrowser.contentDocument.documentElement.textContent.indexOf('\u0402'), 156, "Parent doc should be windows-1251");
+
+  is(gBrowser.contentDocument.getElementsByTagName("iframe")[0].contentDocument.documentElement.textContent.indexOf('\u0402'), 99, "Child doc should be windows-1251");
+
+  gBrowser.removeCurrentTab();
+  finish();
+}
+