Added download helper test

Note, test isn't implemented

Signed-off-by: Alex Bilbie <alex@alexbilbie.com>
diff --git a/tests/codeigniter/helpers/download_helper_test.php b/tests/codeigniter/helpers/download_helper_test.php
new file mode 100644
index 0000000..b41a853
--- /dev/null
+++ b/tests/codeigniter/helpers/download_helper_test.php
@@ -0,0 +1,10 @@
+<?php
+
+class Download_helper_test extends CI_TestCase {
+
+	public function test_force_download()
+	{
+		$this->markTestIncomplete();
+	}
+
+}
\ No newline at end of file