diff -r 000000000000 -r 6474c204b198 browser/base/content/test/general/browser_urlbarTrimURLs.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/base/content/test/general/browser_urlbarTrimURLs.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,89 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+function testVal(originalValue, targetValue) {
+  gURLBar.value = originalValue;
+  gURLBar.valueIsTyped = false;
+  is(gURLBar.value, targetValue || originalValue, "url bar value set");
+}
+
+function test() {
+  const prefname = "browser.urlbar.trimURLs";
+
+  gBrowser.selectedTab = gBrowser.addTab();
+
+  registerCleanupFunction(function () {
+    gBrowser.removeCurrentTab();
+    Services.prefs.clearUserPref(prefname);
+    URLBarSetURI();
+  });
+
+  Services.prefs.setBoolPref(prefname, true);
+
+  testVal("http://mozilla.org/", "mozilla.org");
+  testVal("https://mozilla.org/", "https://mozilla.org");
+  testVal("http://mözilla.org/", "mözilla.org");
+  testVal("http://mozilla.imaginatory/", "mozilla.imaginatory");
+  testVal("http://www.mozilla.org/", "www.mozilla.org");
+  testVal("http://sub.mozilla.org/", "sub.mozilla.org");
+  testVal("http://sub1.sub2.sub3.mozilla.org/", "sub1.sub2.sub3.mozilla.org");
+  testVal("http://mozilla.org/file.ext", "mozilla.org/file.ext");
+  testVal("http://mozilla.org/sub/", "mozilla.org/sub/");
+
+  testVal("http://ftp.mozilla.org/", "http://ftp.mozilla.org");
+  testVal("http://ftp1.mozilla.org/", "http://ftp1.mozilla.org");
+  testVal("http://ftp42.mozilla.org/", "http://ftp42.mozilla.org");
+  testVal("http://ftpx.mozilla.org/", "ftpx.mozilla.org");
+  testVal("ftp://ftp.mozilla.org/", "ftp://ftp.mozilla.org");
+  testVal("ftp://ftp1.mozilla.org/", "ftp://ftp1.mozilla.org");
+  testVal("ftp://ftp42.mozilla.org/", "ftp://ftp42.mozilla.org");
+  testVal("ftp://ftpx.mozilla.org/", "ftp://ftpx.mozilla.org");
+
+  testVal("https://user:pass@mozilla.org/", "https://user:pass@mozilla.org");
+  testVal("http://user:pass@mozilla.org/", "http://user:pass@mozilla.org");
+  testVal("http://sub.mozilla.org:666/", "sub.mozilla.org:666");
+
+  testVal("https://[fe80::222:19ff:fe11:8c76]/file.ext");
+  testVal("http://[fe80::222:19ff:fe11:8c76]/", "[fe80::222:19ff:fe11:8c76]");
+  testVal("https://user:pass@[fe80::222:19ff:fe11:8c76]:666/file.ext");
+  testVal("http://user:pass@[fe80::222:19ff:fe11:8c76]:666/file.ext");
+
+  testVal("mailto:admin@mozilla.org");
+  testVal("gopher://mozilla.org/");
+  testVal("about:config");
+  testVal("jar:http://mozilla.org/example.jar!/");
+  testVal("view-source:http://mozilla.org/");
+
+  Services.prefs.setBoolPref(prefname, false);
+
+  testVal("http://mozilla.org/");
+
+  Services.prefs.setBoolPref(prefname, true);
+
+  waitForExplicitFinish();
+
+  gBrowser.selectedBrowser.addEventListener("load", function () {
+    gBrowser.selectedBrowser.removeEventListener("load", arguments.callee, true);
+
+    is(gBrowser.currentURI.spec, "http://example.com/", "expected page should have loaded");
+
+    testCopy("example.com", "http://example.com/", function () {
+      SetPageProxyState("invalid");
+      gURLBar.valueIsTyped = true;
+      testCopy("example.com", "example.com", finish);
+    });
+  }, true);
+
+  gBrowser.loadURI("http://example.com/");
+}
+
+function testCopy(originalValue, targetValue, cb) {
+  waitForClipboard(targetValue, function () {
+    is(gURLBar.value, originalValue, "url bar copy value set");
+
+    gURLBar.focus();
+    gURLBar.select();
+    goDoCommand("cmd_copy");
+  }, cb, cb);
+}