Add tests

Author: kenjis

ci_instance.php

@@ -67,6 +67,7 @@
 
 load_class('Loader', 'core');
 load_class('Router', 'core');
+load_class('Output', 'core');
 load_class('Input',  'core');
 load_class('Lang',   'core');
 

tests/libraries/TwigTest.php

@@ -0,0 +1,37 @@
+<?php
+
+class TwigTest extends PHPUnit_Framework_TestCase
+{
+    public static function setUpBeforeClass()
+    {
+        parent::setUpBeforeClass();
+        $CI =& get_instance();
+        $CI->load->library('Twig');
+        $CI->load->helper('url_helper');
+        $CI->load->helper('form_helper');
+    }
+
+    public function testRedner()
+    {
+        $obj = new Twig(['paths' => __DIR__ . '/../templates/']);
+        
+        $data = [
+            'name' => 'CodeIgniter',
+        ];
+        $output = $obj->render('welcome', $data);
+        $this->assertEquals('Hello CodeIgniter!'."\n", $output);
+    }
+
+    public function testDisplay()
+    {
+        $obj = new Twig(['paths' => __DIR__ . '/../templates/']);
+        
+        $data = [
+            'name' => 'CodeIgniter',
+        ];
+        $obj->display('welcome', $data);
+        $CI =& get_instance();
+        $output = $CI->output->get_output();
+        $this->assertEquals('Hello CodeIgniter!'."\n", $output);
+    }
+}

tests/templates/welcome.twig

@@ -0,0 +1 @@
+Hello {{ name }}!