added a way to detect unnecesary oembed providers

Author: oscarotero

tests/TestCaseBase.php

@@ -4,6 +4,7 @@
  * Base class with custom utilities for testing.
  */
 use Embed\Embed;
+use Embed\Request;
 
 abstract class TestCaseBase extends PHPUnit_Framework_TestCase
 {
@@ -76,5 +77,30 @@ protected function assertEmbed($url, array $info, array $config = array())
                     throw new InvalidArgumentException("No valid {$name} assertion");
             }
         }
+
+        $this->assertOembedAutodiscover($i->getRequest());
+    }
+
+    /**
+     * This method allow to discover sites including the oembed endpoint in the code,
+     * to remove the custom Oembed provider if exists.
+     */
+    private function assertOembedAutodiscover(Request $request)
+    {
+        $className = $request->getClassNameForDomain();
+
+        //exceptions
+        if (in_array($className, ['Wordpress', 'Youtube'])) {
+            return;
+        }
+
+        $class = 'Embed\\Providers\\OEmbed\\'.$className;
+
+        if (class_exists($class)) {
+            $body = $request->getContent();
+
+            $this->assertFalse(strpos($body, '/json+oembed'), 'Autodiscovered json OEmbed');
+            $this->assertFalse(strpos($body, '/xml+oembed'), 'Autodiscovered xml OEmbed');
+        }
     }
 }