Fixed an issue with the recent PR and added a test to make sure the provider works when no config is provided

Author: jeremeamia

src/Aws/Laravel/AwsServiceProvider.php

@@ -18,11 +18,10 @@
 
 use Aws\Common\Aws;
 use Aws\Common\Client\UserAgentListener;
-use Aws\Common\Exception\RuntimeException;
 use Guzzle\Common\Event;
 use Guzzle\Service\Client;
-use Illuminate\Support\ServiceProvider;
 use Illuminate\Foundation\Application;
+use Illuminate\Support\ServiceProvider;
 
 /**
  * AWS SDK for PHP service provider for Laravel applications
@@ -36,15 +35,19 @@ public function register()
     {
         $this->app['aws'] = $this->app->share(function ($app) {
             // Instantiate the AWS service builder
-            $config = isset($app['config']['aws']) ? $app['config']['aws'] : array();
+            $config = (isset($app['config']) && isset($app['config']['aws'])) ? $app['config']['aws'] : array();
             $aws = Aws::factory($config);
 
             // Attach an event listener that will append the Laravel version number in the user agent string
             $aws->getEventDispatcher()->addListener('service_builder.create_client', function (Event $event) {
+                // The version number is only available in BETA4+, so an extra check is needed
+                $version = defined('Illuminate\Foundation\Application::VERSION') ? Application::VERSION : '4.0.0';
+
+                // Add the listener to modify the UA string
                 $clientConfig = $event['client']->getConfig();
                 $commandParams = $clientConfig->get(Client::COMMAND_PARAMS) ?: array();
                 $clientConfig->set(Client::COMMAND_PARAMS, array_merge_recursive($commandParams, array(
-                    UserAgentListener::OPTION => 'Laravel' . ( defined('Application::VERSION') ? '/' . Application::VERSION : '' ),
+                    UserAgentListener::OPTION => "Laravel/{$version}",
                 )));
             });
 

tests/Aws/Laravel/Tests/AwsServiceProviderTest.php

@@ -40,7 +40,9 @@ public function testRegisterAwsServiceProvider()
         $provider->boot();
 
         // Get an instance of a client (S3) to use for testing
+        /** @var $s3 \Aws\S3\S3Client */
         $s3 = $app['aws']->get('s3');
+        $this->assertInstanceOf('Aws\S3\S3Client', $s3);
 
         // Verify that the app and clients created by the SDK receive the provided credentials
         $this->assertEquals('your-aws-access-key-id', $app['config']['aws']['key']);
@@ -54,4 +56,24 @@ public function testRegisterAwsServiceProvider()
         $s3->dispatch('command.before_send', array('command' => $command));
         $this->assertRegExp('/.+Laravel\/.+/', $request->getHeader('User-Agent', true));
     }
+
+    /**
+     * @expectedException \Aws\Common\Exception\InstanceProfileCredentialsException
+     */
+    public function testNoConfigProvided()
+    {
+        // Setup the Laravel app and AWS service provider
+        $app = new Application();
+        $provider = new AwsServiceProvider($app);
+        $app->register($provider);
+        $provider->boot();
+
+        // Make sure we can still get the S3Client
+        /** @var $s3 \Aws\S3\S3Client */
+        $s3 = $app['aws']->get('s3');
+        $this->assertInstanceOf('Aws\S3\S3Client', $s3);
+
+        // Trigger the expected exception
+        $s3->getCredentials()->getAccessKeyId();
+    }
 }