Added language helper unit test

Signed-off-by: Alex Bilbie <alex@alexbilbie.com>
diff --git a/tests/codeigniter/helpers/language_helper_test.php b/tests/codeigniter/helpers/language_helper_test.php
new file mode 100644
index 0000000..06932b9
--- /dev/null
+++ b/tests/codeigniter/helpers/language_helper_test.php
@@ -0,0 +1,14 @@
+<?php
+
+class Language_helper_test extends CI_TestCase {
+
+	public function test_lang()
+	{
+		$this->helper('language');
+		$this->ci_instance_var('lang', new Mock_Core_Lang());
+
+		$this->assertFalse(lang(1));
+		$this->assertEquals('<label for="foo"></label>', lang(1, 'foo'));
+	}
+
+}
\ No newline at end of file