diff --git a/tests/lib/preferences.php b/tests/lib/preferences.php
new file mode 100644
index 0000000000000000000000000000000000000000..d39555aa01d89c2f08780f59aadfa9ce906c2449
--- /dev/null
+++ b/tests/lib/preferences.php
@@ -0,0 +1,121 @@
+<?php
+/**
+ * Copyright (c) 2013 Christopher Schäpers <christopher@schaepers.it>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+class Test_Preferences extends PHPUnit_Framework_TestCase {
+	private function fillDb() {
+		$query = \OC_DB::prepare('INSERT INTO `*PREFIX*preferences` VALUES(?, ?, ?, ?)');
+		$query->execute(array("Someuser", "someapp", "somekey", "somevalue"));
+
+		$query->execute(array("Someuser", "getusersapp", "somekey", "somevalue"));
+		$query->execute(array("Anotheruser", "getusersapp", "somekey", "someothervalue"));
+		$query->execute(array("Anuser", "getusersapp", "somekey", "somevalue"));
+
+		$query->execute(array("Someuser", "getappsapp", "somekey", "somevalue"));
+
+		$query->execute(array("Someuser", "getkeysapp", "firstkey", "somevalue"));
+		$query->execute(array("Someuser", "getkeysapp", "anotherkey", "somevalue"));
+		$query->execute(array("Someuser", "getkeysapp", "key-tastic", "somevalue"));
+
+		$query->execute(array("Someuser", "getvalueapp", "key", "a value for a key"));
+
+		$query->execute(array("Deleteuser", "deleteapp", "deletekey", "somevalue"));
+		$query->execute(array("Deleteuser", "deleteapp", "somekey", "somevalue"));
+		$query->execute(array("Deleteuser", "someapp", "somekey", "somevalue"));
+	}
+
+	public function testGetUsers() {
+		$this->fillDb();
+
+		$query = \OC_DB::prepare('SELECT DISTINCT `userid` FROM `*PREFIX*preferences`');
+		$result = $query->execute();
+		$expected = array();
+		while ($row = $result->fetchRow()) {
+			$expected[] = $row['userid'];
+		}
+
+		$this->assertEquals($expected, \OC_Preferences::getUsers());
+	}
+
+	public function testGetApps() {
+		$query = \OC_DB::prepare('SELECT DISTINCT `appid` FROM `*PREFIX*preferences` WHERE `userid` = ?');
+		$result = $query->execute(array('Someuser'));
+		$expected = array();
+		while ($row = $result->fetchRow()) {
+			$expected[] = $row['appid'];
+		}
+
+		$this->assertEquals($expected, \OC_Preferences::getApps('Someuser'));
+	}
+
+	public function testGetKeys() {
+		$query = \OC_DB::prepare('SELECT DISTINCT `configkey` FROM `*PREFIX*preferences` WHERE `userid` = ? AND `appid` = ?');
+		$result = $query->execute(array('Someuser', 'getkeysapp'));
+		$expected = array();
+		while ($row = $result->fetchRow()) {
+			$expected[] = $row['configkey'];
+		}
+
+		$this->assertEquals($expected, \OC_Preferences::getKeys('Someuser', 'getkeysapp'));
+	}
+
+	public function testGetValue() {
+		$this->assertNull(\OC_Preferences::getValue('nonexistant', 'nonexistant', 'nonexistant'));
+
+		$this->assertEquals('default', \OC_Preferences::getValue('nonexistant', 'nonexistant', 'nonexistant', 'default'));
+
+		$query = \OC_DB::prepare('SELECT `configvalue` FROM `*PREFIX*preferences` WHERE `userid` = ? AND `appid` = ? AND `configkey` = ?');
+		$result = $query->execute(array('Someuser', 'getvalueapp', 'key'));
+		$row = $result->fetchRow();
+		$expected = $row['configvalue'];
+		$this->assertEquals($expected, \OC_Preferences::getValue('Someuser', 'getvalueapp', 'key'));
+	}
+
+	public function testSetValue() {
+		$this->assertTrue(\OC_Preferences::setValue('Someuser', 'setvalueapp', 'newkey', 'newvalue'));
+		$query = \OC_DB::prepare('SELECT `configvalue` FROM `*PREFIX*preferences` WHERE `userid` = ? AND `appid` = ? AND `configkey` = ?');
+		$result = $query->execute(array('Someuser', 'setvalueapp', 'newkey'));
+		$row = $result->fetchRow();
+		$value = $row['configvalue'];
+		$this->assertEquals('newvalue', $value);
+
+		$this->assertTrue(\OC_Preferences::setValue('Someuser', 'setvalueapp', 'newkey', 'othervalue'));
+		$query = \OC_DB::prepare('SELECT `configvalue` FROM `*PREFIX*preferences` WHERE `userid` = ? AND `appid` = ? AND `configkey` = ?');
+		$result = $query->execute(array('Someuser', 'setvalueapp', 'newkey'));
+		$row = $result->fetchRow();
+		$value = $row['configvalue'];
+		$this->assertEquals('othervalue', $value);
+	}
+
+	public function testDeleteKey() {
+		$this->assertTrue(\OC_Preferences::deleteKey('Deleteuser', 'deleteapp', 'deletekey'));
+		$query = \OC_DB::prepare('SELECT `configvalue` FROM `*PREFIX*preferences` WHERE `userid` = ? AND `appid` = ? AND `configkey` = ?');
+		$result = $query->execute(array('Deleteuser', 'deleteapp', 'deletekey'));
+		$this->assertEquals(0, $result->numRows());
+	}
+
+	public function testDeleteApp() {
+		$this->assertTrue(\OC_Preferences::deleteApp('Deleteuser', 'deleteapp'));
+		$query = \OC_DB::prepare('SELECT `configvalue` FROM `*PREFIX*preferences` WHERE `userid` = ? AND `appid` = ?');
+		$result = $query->execute(array('Deleteuser', 'deleteapp'));
+		$this->assertEquals(0, $result->numRows());
+	}
+
+	public function testDeleteUser() {
+		$this->assertTrue(\OC_Preferences::deleteUser('Deleteuser'));
+		$query = \OC_DB::prepare('SELECT `configvalue` FROM `*PREFIX*preferences` WHERE `userid` = ?');
+		$result = $query->execute(array('Deleteuser'));
+		$this->assertEquals(0, $result->numRows());
+	}
+
+	public function testDeleteAppFromAllUsers() {
+		$this->assertTrue(\OC_Preferences::deleteAppFromAllUsers('someapp'));
+		$query = \OC_DB::prepare('SELECT `configvalue` FROM `*PREFIX*preferences` WHERE `appid` = ?');
+		$result = $query->execute(array('someapp'));
+		$this->assertEquals(0, $result->numRows());
+	}
+}
diff --git a/tests/lib/util.php b/tests/lib/util.php
index a038538d7eab7689394b4641807b82c68e12428f..13aa49c8c6f606164a657e08ad1664e4c588bd82 100644
--- a/tests/lib/util.php
+++ b/tests/lib/util.php
@@ -7,6 +7,23 @@
  */
 
 class Test_Util extends PHPUnit_Framework_TestCase {
+	public function testGetVersion() {
+		$version = \OC_Util::getVersion();
+		$this->assertTrue(is_array($version));
+		foreach ($version as $num) {
+			$this->assertTrue(is_int($num));
+		}
+	}
+
+	public function testGetVersionString() {
+		$version = \OC_Util::getVersionString();
+		$this->assertTrue(is_string($version));
+	}
+
+	public function testGetEditionString() {
+		$edition = \OC_Util::getEditionString();
+		$this->assertTrue(is_string($edition));
+	}
 
 	function testFormatDate() {
 		date_default_timezone_set("UTC");
@@ -41,6 +58,19 @@ class Test_Util extends PHPUnit_Framework_TestCase {
 		$this->assertEquals("/%C2%A7%23%40test%25%26%5E%C3%A4/-child", $result);
 	}
 
+	public function testFileInfoLoaded() {
+		$expected = function_exists('finfo_open');
+		$this->assertEquals($expected, \OC_Util::fileInfoLoaded());
+	}
+
+	public function testIsInternetConnectionEnabled() {
+		\OC_Config::setValue("has_internet_connection", false);
+		$this->assertFalse(\OC_Util::isInternetConnectionEnabled());
+
+		\OC_Config::setValue("has_internet_connection", true);
+		$this->assertTrue(\OC_Util::isInternetConnectionEnabled());
+	}
+
 	function testGenerate_random_bytes() {
 		$result = strlen(OC_Util::generate_random_bytes(59));
 		$this->assertEquals(59, $result);