diff --git a/src/tests/.gitignore b/src/tests/.gitignore
index 17a026577..f25e411bc 100644
--- a/src/tests/.gitignore
+++ b/src/tests/.gitignore
@@ -4,3 +4,4 @@ tdb.t
 date.t
 duration.t
 text.t
+autocomplete.t
diff --git a/src/tests/Makefile b/src/tests/Makefile
index 8df7ab92f..0650a8a92 100644
--- a/src/tests/Makefile
+++ b/src/tests/Makefile
@@ -1,4 +1,4 @@
-PROJECT = t.t tdb.t date.t duration.t t.benchmark.t text.t
+PROJECT = t.t tdb.t date.t duration.t t.benchmark.t text.t autocomplete.t
 CFLAGS  = -I. -I.. -Wall -pedantic -ggdb3 -fno-rtti
 LFLAGS  = -L/usr/local/lib
 OBJECTS = ../TDB.o ../T.o ../parse.o ../text.o ../Date.o ../util.o ../Config.o
@@ -35,3 +35,6 @@ t.benchmark.t: t.benchmark.t.o $(OBJECTS) test.o
 text.t: text.t.o $(OBJECTS) test.o
 	g++ text.t.o $(OBJECTS) test.o $(LFLAGS) -o text.t
 
+autocomplete.t: autocomplete.t.o $(OBJECTS) test.o
+	g++ autocomplete.t.o $(OBJECTS) test.o $(LFLAGS) -o autocomplete.t
+
diff --git a/src/tests/autocomplete.t.cpp b/src/tests/autocomplete.t.cpp
new file mode 100644
index 000000000..e97e2fb3e
--- /dev/null
+++ b/src/tests/autocomplete.t.cpp
@@ -0,0 +1,63 @@
+////////////////////////////////////////////////////////////////////////////////
+// task - a command line task list manager.
+//
+// Copyright 2006 - 2009, Paul Beckingham.
+// All rights reserved.
+//
+// This program is free software; you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free Software
+// Foundation; either version 2 of the License, or (at your option) any later
+// version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+// details.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program; if not, write to the
+//
+//     Free Software Foundation, Inc.,
+//     51 Franklin Street, Fifth Floor,
+//     Boston, MA
+//     02110-1301
+//     USA
+//
+////////////////////////////////////////////////////////////////////////////////
+#include <iostream>
+#include <test.h>
+#include <../task.h>
+
+////////////////////////////////////////////////////////////////////////////////
+int main (int argc, char** argv)
+{
+  UnitTest t (8);
+
+  std::vector <std::string> options;
+  options.push_back ("abc");
+  options.push_back ("abcd");
+  options.push_back ("abcde");
+  options.push_back ("bcdef");
+  options.push_back ("cdefg");
+
+  std::vector <std::string> matches;
+  int result = autoComplete ("", options, matches);
+  t.is (result, 0, "no match on empty string");
+
+  result = autoComplete ("x", options, matches);
+  t.is (result, 0, "no match on wrong string");
+
+  result = autoComplete ("abcd", options, matches);
+  t.is (result, 1, "exact match on 'abcd'");
+  t.is (matches[0], "abcd", "exact match on 'abcd'");
+
+  result = autoComplete ("ab", options, matches);
+  t.is (result, 3, "partial match on 'ab'");
+  t.is (matches[0], "abc", "partial match on 'abc'");
+  t.is (matches[1], "abcd", "partial match on 'abcd'");
+  t.is (matches[2], "abcde", "partial match on 'abcde'");
+
+  return 0;
+}
+
+////////////////////////////////////////////////////////////////////////////////