diff -r 000000000000 -r 6474c204b198 toolkit/components/filepicker/test/unit/test_filecomplete.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/filepicker/test/unit/test_filecomplete.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,45 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Start by getting an empty directory.
+var dir = do_get_profile();
+dir.append("temp");
+dir.create(dir.DIRECTORY_TYPE, -1);
+var path = dir.path + "/";
+
+// Now create some sample entries.
+var file = dir.clone();
+file.append("test_file");
+file.create(file.NORMAL_FILE_TYPE, -1);
+file = dir.clone();
+file.append("other_file");
+file.create(file.NORMAL_FILE_TYPE, -1);
+dir.append("test_dir");
+dir.create(dir.DIRECTORY_TYPE, -1);
+
+var gListener = {
+  onSearchResult: function(aSearch, aResult) {
+    // Check that we got same search string back.
+    do_check_eq(aResult.searchString, "test");
+    // Check that the search succeeded.
+    do_check_eq(aResult.searchResult, aResult.RESULT_SUCCESS);
+    // Check that we got two results.
+    do_check_eq(aResult.matchCount, 2);
+    // Check that the first result is the directory we created.
+    do_check_eq(aResult.getValueAt(0), "test_dir");
+    // Check that the first result has directory style.
+    do_check_eq(aResult.getStyleAt(0), "directory");
+    // Check that the second result is the file we created.
+    do_check_eq(aResult.getValueAt(1), "test_file");
+    // Check that the second result has file style.
+    do_check_eq(aResult.getStyleAt(1), "file");
+  }
+};
+
+function run_test()
+{
+  Components.classes["@mozilla.org/autocomplete/search;1?name=file"]
+            .getService(Components.interfaces.nsIAutoCompleteSearch)
+            .startSearch("test", path, null, gListener);
+}