[HttpKernel] Fix StreamedResponse with chunks support in HttpKernelBrowser

wuchen90 · wuchen90 · commit 4c27082000fb · 2025-11-07T14:40:02.000+01:00
diff --git a/src/Symfony/Component/HttpKernel/HttpKernelBrowser.php b/src/Symfony/Component/HttpKernel/HttpKernelBrowser.php
@@ -181,10 +181,19 @@ protected function filterFiles(array $files): array
     protected function filterResponse(object $response): DomResponse
     {
         // this is needed to support StreamedResponse
-        ob_start();
-        $response->sendContent();
-        $content = ob_get_clean();
+        $content = '';
+        ob_start(static function (string $chunk) use (&$content): string {
+            $content .= $chunk;
 
-        return new DomResponse($content, $response->getStatusCode(), $response->headers->all());
+            return $chunk;
+        });
+
+        try {
+            $response->sendContent();
+
+            return new DomResponse($content, $response->getStatusCode(), $response->headers->all());
+        } finally {
+            ob_end_clean();
+        }
     }
 }
diff --git a/src/Symfony/Component/HttpKernel/Tests/HttpKernelBrowserTest.php b/src/Symfony/Component/HttpKernel/Tests/HttpKernelBrowserTest.php
@@ -89,6 +89,19 @@ public function testFilterResponseSupportsStreamedResponses()
         $this->assertEquals('foo', $domResponse->getContent());
     }
 
+    public function testFilterResponseSupportsStreamedResponsesWithChunks()
+    {
+        $client = new HttpKernelBrowser(new TestHttpKernel());
+
+        $r = new \ReflectionObject($client);
+        $m = $r->getMethod('filterResponse');
+
+        $response = new StreamedResponse(new \ArrayIterator(['foo']));
+
+        $domResponse = $m->invoke($client, $response);
+        $this->assertEquals('foo', $domResponse->getContent());
+    }
+
     public function testUploadedFile()
     {
         $source = tempnam(sys_get_temp_dir(), 'source');
