[Nostromo] Improve tests. Mess Detector recommendations.

src/Mage/MageApplication.php

@@ -20,7 +20,8 @@ use Symfony\Component\EventDispatcher\EventDispatcher;
 use Symfony\Component\Console\Event\ConsoleExceptionEvent;
 use Symfony\Component\Console\ConsoleEvents;
 use Symfony\Component\Console\Application;
-use Symfony\Component\Yaml\Yaml;
+use Symfony\Component\Yaml\Parser;
+use Symfony\Component\Yaml\Exception\ParseException;
 use ReflectionClass;
 use Mage\Runtime\Exception\RuntimeException;
 
@@ -62,7 +63,13 @@ class MageApplication extends Application
             throw new RuntimeException(sprintf('The file "%s" does not exists or is not readable.', $file));
         }
 
-        $config = Yaml::parse(file_get_contents($file));
+        try {
+            $parser = new Parser();
+            $config = $parser->parse(file_get_contents($file));
+        } catch (ParseException $exception) {
+            throw new RuntimeException(sprintf('Error parsing the file "%s".', $file));
+        }
+
         if (array_key_exists('magephp', $config)) {
             $config = $config['magephp'];
 
@@ -80,9 +87,10 @@ class MageApplication extends Application
             $this->runtime->setLogger($logger);
 
             $this->loadBuiltInCommands();
-        } else {
-            throw new RuntimeException(sprintf('The file "%s" does not have a valid Magallanes configuration.', $file));
+            return true;
         }
+
+        throw new RuntimeException(sprintf('The file "%s" does not have a valid Magallanes configuration.', $file));
     }
 
     /**

src/Mage/Tests/MageApplicationTest.php

@@ -36,6 +36,17 @@ class MageApplicationTest extends TestCase
         }
     }
 
+    public function testParserError()
+    {
+        try {
+            $application = new MageApplication();
+            $application->configure(__DIR__ . '/Resources/invalid-yaml.yml');
+        } catch (Exception $exception) {
+            $this->assertTrue($exception instanceof RuntimeException);
+            $this->assertEquals(sprintf('Error parsing the file "%s".', __DIR__ . '/Resources/invalid-yaml.yml'), $exception->getMessage());
+        }
+    }
+
     public function testInvalidFile()
     {
         try {

src/Mage/Tests/Resources/invalid-yaml.yml

@@ -0,0 +1,6 @@
+magephp:
+  environments:
+      hosts:
+        - host1
+         - host2
+      - host3