Add base controller class & update tests.

For the more complex controllers like the run controllers using mocks is
not going to be easy/fun. Add some more 'framework' to make testing
easier.

src/Xhgui/Controller.php

@@ -0,0 +1,23 @@
+<?php
+
+class Xhgui_Controller
+{
+    protected $_templateVars = array();
+    protected $_template = null;
+
+    public function set($vars)
+    {
+        $this->_templateVars = array_merge($this->_templateVars, $vars);
+    }
+
+    public function templateVars()
+    {
+        return $this->_templateVars;
+    }
+
+    public function render()
+    {
+        $this->_app->render($this->_template, $this->_templateVars);
+    }
+
+}

src/Xhgui/Controller/Watch.php

@@ -1,6 +1,6 @@
 <?php
 
-class Xhgui_Controller_Watch
+class Xhgui_Controller_Watch extends Xhgui_Controller
 {
 
     protected $_app;
@@ -16,9 +16,8 @@ public function get()
     {
         $watched = $this->_watches->getAll();
 
-        $this->_app->render('watch/list.twig', array(
-            'watched' => $watched,
-        ));
+        $this->_template = 'watch/list.twig';
+        $this->set(array('watched' => $watched));
     }
 
     public function post()

src/routes.php

@@ -37,11 +37,15 @@
 
 // Watch function routes.
 $app->get('/watch', function () use ($di) {
-    $di['watchController']->get();
+    $c = $di['watchController'];
+    $c->get();
+    $c->render();
 })->name('watch.list');
 
 $app->post('/watch', function () use ($di) {
-    $di['watchController']->post();
+    $c = $di['watchController'];
+    $c->post();
+    $c->render();
 })->name('watch.save');
 
 

tests/Controller/WatchTest.php

@@ -16,7 +16,7 @@ public function setUp()
        $di['app'] = $di->share(function ($c) {
            return $this->getMock(
                'Slim\Slim',
-               array('redirect', 'render', 'urlFor'),
+               array('redirect', 'urlFor'),
                array($c['config'])
            );
        });
@@ -28,11 +28,9 @@ public function setUp()
 
     public function testGet()
     {
-        $this->app->expects($this->once())
-            ->method('render')
-            ->with('watch/list.twig', array('watched' => array()));
-
         $this->watches->get();
+        $result = $this->watches->templateVars();
+        $this->assertEquals(array(), $result['watched']);
     }
 
     public function testPostAdd()