diff -r 000000000000 -r 6474c204b198 browser/metro/base/tests/mochitest/browser_urlbar_trimURLs.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/metro/base/tests/mochitest/browser_urlbar_trimURLs.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,141 @@
+// -*- Mode: js2; tab-width: 2; indent-tabs-mode: nil; js2-basic-offset: 2; js2-skip-preprocessor-directives: t; -*-
+/* vim: set ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const kTrimPref = "browser.urlbar.trimURLs";
+var gTrimPrefValue;
+
+function test() {
+  runTests();
+}
+
+function setUp() {
+  gTrimPrefValue = SpecialPowers.getBoolPref(kTrimPref);
+  SpecialPowers.setBoolPref(kTrimPref, true);
+  yield addTab("about:blank");
+}
+
+function tearDown() {
+  SpecialPowers.setBoolPref(kTrimPref, gTrimPrefValue);
+  Browser.closeTab(Browser.selectedTab, { forceClose: true });
+}
+
+function testTrim(aOriginal, aTarget) {
+  let urlbar = BrowserUI._edit;
+  urlbar.value = aOriginal;
+  urlbar.valueIsTyped = false;
+  is(urlbar.value, aTarget || aOriginal, "url bar value set");
+}
+
+gTests.push({
+  desc: "URIs - trimming (pref enabled)",
+  setUp: setUp,
+  tearDown: tearDown,
+  run: function () {
+    let testcases = [
+      ["http://mozilla.org/", "mozilla.org"],
+      ["https://mozilla.org/", "https://mozilla.org"],
+      ["http://mözilla.org/", "mözilla.org"],
+      ["http://mozilla.imaginatory/", "mozilla.imaginatory"],
+      ["http://www.mozilla.org/", "www.mozilla.org"],
+      ["http://sub.mozilla.org/", "sub.mozilla.org"],
+      ["http://sub1.sub2.sub3.mozilla.org/", "sub1.sub2.sub3.mozilla.org"],
+      ["http://mozilla.org/file.ext", "mozilla.org/file.ext"],
+      ["http://mozilla.org/sub/", "mozilla.org/sub/"],
+
+      ["http://ftp.mozilla.org/", "http://ftp.mozilla.org"],
+      ["http://ftp1.mozilla.org/", "http://ftp1.mozilla.org"],
+      ["http://ftp42.mozilla.org/", "http://ftp42.mozilla.org"],
+      ["http://ftpx.mozilla.org/", "ftpx.mozilla.org"],
+      ["ftp://ftp.mozilla.org/", "ftp://ftp.mozilla.org"],
+      ["ftp://ftp1.mozilla.org/", "ftp://ftp1.mozilla.org"],
+      ["ftp://ftp42.mozilla.org/", "ftp://ftp42.mozilla.org"],
+      ["ftp://ftpx.mozilla.org/", "ftp://ftpx.mozilla.org"],
+
+      ["https://user:pass@mozilla.org/", "https://user:pass@mozilla.org"],
+      ["http://user:pass@mozilla.org/", "http://user:pass@mozilla.org"],
+      ["http://sub.mozilla.org:666/", "sub.mozilla.org:666"],
+
+      ["https://[fe80::222:19ff:fe11:8c76]/file.ext"],
+      ["http://[fe80::222:19ff:fe11:8c76]/", "[fe80::222:19ff:fe11:8c76]"],
+      ["https://user:pass@[fe80::222:19ff:fe11:8c76]:666/file.ext"],
+      ["http://user:pass@[fe80::222:19ff:fe11:8c76]:666/file.ext"],
+
+      ["mailto:admin@mozilla.org"],
+      ["gopher://mozilla.org/"],
+      ["about:config"],
+      ["jar:http://mozilla.org/example.jar!/"],
+      ["view-source:http://mozilla.org/"]
+    ];
+
+    for (let [original, target] of testcases)
+      testTrim(original, target);
+  }
+});
+
+gTests.push({
+  desc: "URIs - no trimming (pref disabled)",
+  setUp: setUp,
+  tearDown: tearDown,
+  run: function () {
+    SpecialPowers.setBoolPref(kTrimPref, false);
+    testTrim("http://mozilla.org/");
+
+    SpecialPowers.setBoolPref(kTrimPref, true);
+    testTrim("http://mozilla.org/", "mozilla.org");
+  }
+});
+
+gTests.push({
+  desc: "Loaded URI - copy/paste behavior",
+  setUp: setUp,
+  tearDown: tearDown,
+  run: function () {
+    let urlbar = BrowserUI._edit;
+
+    BrowserUI.goToURI("http://example.com/");
+    let pageLoaded = yield waitForCondition(
+      () => Browser.selectedBrowser.currentURI.spec == "http://example.com/");
+
+    ok(pageLoaded, "expected page should have loaded");
+    is(urlbar.value, "example.com", "trimmed value set");
+
+    yield showNavBar();
+
+    function clipboardCondition(aExpected) {
+      return () => aExpected == SpecialPowers.getClipboardData("text/unicode");
+    }
+
+    // Value set by browser -- should copy entire url (w/ scheme) on full select
+
+    urlbar.focus();
+    urlbar.select();
+    CommandUpdater.doCommand("cmd_copy");
+
+    let copy = yield waitForCondition(clipboardCondition("http://example.com/"));
+    ok(copy, "should copy entire url (w/ scheme) on full select");
+
+    // Value set by browser -- should copy selected text on partial select
+
+    urlbar.focus();
+    urlbar.select();
+    urlbar.selectionStart = 2;
+    CommandUpdater.doCommand("cmd_copy");
+
+    copy = yield waitForCondition(clipboardCondition("ample.com"));
+    ok(copy, "should copy selected text on partial select");
+
+    // Value set by user -- should not copy full string
+
+    urlbar.valueIsTyped = true;
+    urlbar.focus();
+    urlbar.select();
+    CommandUpdater.doCommand("cmd_copy");
+
+    copy = yield waitForCondition(clipboardCondition("example.com"));
+    ok(copy, "should not copy full string");
+  }
+});
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