Reworked unit tests to match rest of framework and added a few more.
diff --git a/tests/codeigniter/helpers/xml_helper_test.php b/tests/codeigniter/helpers/xml_helper_test.php
new file mode 100644
index 0000000..49f49e1
--- /dev/null
+++ b/tests/codeigniter/helpers/xml_helper_test.php
@@ -0,0 +1,13 @@
+<?php
+
+require_once(BASEPATH.'helpers/xml_helper.php');
+
+class Xml_helper_test extends CI_TestCase
+{
+	
+	public function test_xml_convert()
+	{
+		$this->assertEquals('&lt;tag&gt;my &amp; test &#45; &lt;/tag&gt;', xml_convert('<tag>my & test - </tag>'));
+	}
+	
+}
\ No newline at end of file