diff --git a/tests/unit/functions/functions_modules_test.php b/tests/unit/functions/functions_modules_test.php
new file mode 100644
index 00000000..4c586095
--- /dev/null
+++ b/tests/unit/functions/functions_modules_test.php
@@ -0,0 +1,76 @@
+<?php
+/**
+*
+* @package Board3 Portal testing
+* @copyright (c) Board3 Group ( www.board3.de )
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+require_once(dirname(__FILE__) . '/../../../includes/functions_modules.php');
+
+class phpbb_functions_functions_modules_test extends PHPUnit_Framework_TestCase
+{
+	public function data_column_num_string()
+	{
+		return array(
+			array(0, ''),
+			array(0, false),
+			array('left', 1),
+			array('center', 2),
+			array('right', 3),
+			array('top', 4),
+			array('bottom', 5),
+		);
+	}
+
+	/**
+	* @dataProvider data_column_num_string
+	*/
+	public function test_column_num_string($expected, $input)
+	{
+		$this->assertEquals($expected, column_num_string($input));
+	}
+
+	public function data_column_string_num()
+	{
+		return array(
+			array(0, ''),
+			array(0, false),
+			array(1, 'left'),
+			array(2, 'center'),
+			array(3, 'right'),
+			array(4, 'top'),
+			array(5, 'bottom'),
+		);
+	}
+
+	/**
+	* @dataProvider data_column_string_num
+	*/
+	public function test_column_string_num($expected, $input)
+	{
+		$this->assertEquals($expected, column_string_num($input));
+	}
+
+	public function data_column_string_const()
+	{
+		return array(
+			array(0, ''),
+			array(0, ''),
+			array(2, 'left'),
+			array(4, 'center'),
+			array(8, 'right'),
+			array(1, 'top'),
+			array(16, 'bottom'),
+		);
+	}
+
+	/**
+	* @dataProvider data_column_string_const
+	*/
+	public function test_column_string_const($expected, $input)
+	{
+		$this->assertEquals($expected, column_string_const($input));
+	}
+}