diff -r 000000000000 -r 6474c204b198 browser/devtools/commandline/test/browser_gcli_filesystem.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/commandline/test/browser_gcli_filesystem.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2012, Mozilla Foundation and contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+// <INJECTED SOURCE:START>
+
+// THIS FILE IS GENERATED FROM SOURCE IN THE GCLI PROJECT
+// DO NOT EDIT IT DIRECTLY
+
+var exports = {};
+
+var TEST_URI = "data:text/html;charset=utf-8,<p id='gcli-input'>gcli-testFilesystem.js</p>";
+
+function test() {
+  return Task.spawn(function() {
+    let options = yield helpers.openTab(TEST_URI);
+    yield helpers.openToolbar(options);
+    gcli.addItems(mockCommands.items);
+
+    yield helpers.runTests(options, exports);
+
+    gcli.removeItems(mockCommands.items);
+    yield helpers.closeToolbar(options);
+    yield helpers.closeTab(options);
+  }).then(finish, helpers.handleError);
+}
+
+// <INJECTED SOURCE:END>
+
+// var assert = require('../testharness/assert');
+// var helpers = require('./helpers');
+var filesystem = require('gcli/util/filesystem');
+
+exports.testSplit = function(options) {
+  if (!options.isNode) {
+    return;
+  }
+
+  helpers.arrayIs(filesystem.split('', '/'),
+                  [ '.' ],
+                  'split <blank>');
+
+  helpers.arrayIs(filesystem.split('a', '/'),
+                  [ 'a' ],
+                  'split a');
+
+  helpers.arrayIs(filesystem.split('a/b/c', '/'),
+                  [ 'a', 'b', 'c' ],
+                  'split a/b/c');
+
+  helpers.arrayIs(filesystem.split('/a/b/c/', '/'),
+                  [ 'a', 'b', 'c' ],
+                  'split a/b/c');
+
+  helpers.arrayIs(filesystem.split('/a/b///c/', '/'),
+                  [ 'a', 'b', 'c' ],
+                  'split a/b/c');
+};
+
+exports.testJoin = function(options) {
+  if (!options.isNode) {
+    return;
+  }
+
+  assert.is(filesystem.join('usr', 'local', 'bin'),
+            'usr/local/bin',
+            'join to usr/local/bin');
+};