Add the ability to have a json configuration file

src/Cilex/Provider/ConfigServiceProvider.php

@@ -39,6 +39,9 @@ public function register(Application $app)
                 case 'xml':
                     $result = simplexml_load_file($app['config.path']);
                     break;
+                case 'json':
+                    $result = json_decode(file_get_contents($app['config.path']));
+                    break;
                 default:
                     throw new \InvalidArgumentException(
                         'Unable to load configuration; the provided file '

tests/Cilex/Tests/Provider/ConfigServerProviderTest.php

@@ -0,0 +1,95 @@
+<?php
+/**
+ * This file is part of the Cilex framework.
+ *
+ * (c) Mike van Riel <mike.vanriel@naenius.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @author Ben Selby <benmatselby@gmail.com>
+ */
+
+namespace Cilex\Tests\Provider;
+
+use Cilex\Application;
+use Cilex\Provider\ConfigServiceProvider;
+
+/**
+ * Test file for ConfigServiceProvider
+ *
+ * @author Ben Selby <benmatselby@gmail.com>
+ */
+class ConfigServiceProviderTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Test that an exception is thrown if the config path is not present
+     * or valid
+     *
+     * @return void
+     */
+    public function testRegisterWillThrowExceptionIfConfigPathIsNotThere()
+    {
+        $this->setExpectedException(
+            'InvalidArgumentException',
+            __DIR__.'/../../../data/unknownfile is not a valid path to the configuration'
+        );
+
+        $app = new Application('Test');
+
+        $app->register(
+            new ConfigServiceProvider(),
+            array(
+                'config.path' =>  __DIR__.'/../../../data/unknownfile'
+            )
+        );
+
+        $config = $app['config'];
+    }
+
+    /**
+     * Test that the config provider can parse a json
+     * configuration file
+     *
+     * @return void
+     */
+    public function testRegisterCanParseAJsonConfigFile()
+    {
+        $app = new Application('Test');
+
+        $app->register(
+            new ConfigServiceProvider(),
+            array(
+                'config.path' =>  __DIR__.'/../../../data/config.json'
+            )
+        );
+
+        $config = $app['config'];
+        $this->assertEquals($config->key, 'value');
+    }
+
+    /**
+     * Test that register will throw an exception if an unknown
+     * format is passed in
+     *
+     * @return void
+     */
+    public function testRegisterThrowsExceptionIfAnUnknownFormatIsPassed()
+    {
+        $this->setExpectedException(
+            'InvalidArgumentException',
+            'Unable to load configuration; the provided file extension was not recognized. Only yml or xml allowed'
+        );
+
+        $app = new Application('Test');
+
+        $app->register(
+            new ConfigServiceProvider(),
+            array(
+                'config.path' =>  __DIR__.'/../../../data/config.unknownfiletype'
+            )
+        );
+
+        $config = $app['config'];
+    }
+}

tests/data/config.json

@@ -0,0 +1,3 @@
+{
+    "key": "value"
+}