Make retryAfter protected on BaseResponse and improve the test for ServerResponseException

Author: williamdes

src/Response/BaseResponse.php

@@ -33,7 +33,7 @@ abstract class BaseResponse
      * @see https://httpwg.org/specs/rfc7231.html#header.retry-after
      * @var int|string|null
      */
-    public $retryAfter;
+    protected $retryAfter;
 
     /**
      * BaseResponse constructor.

tests/DownstreamResponseTest.php

@@ -587,9 +587,10 @@ public function test404ResponseWithRetryAfterHeader(): void
             $this->assertFalse(true, 'The exception should have been fired !');
         } catch (ServerResponseException $e) {
             $this->assertSame(1500, $e->getRetryAfterHeaderValue());
+            $this->assertSame(1500, $e->retryAfter);
         }
     }
-    
+
     public function test422ResponseWithRetryAfterHeader(): void
     {
         $tokens = [