T39 injection method

CHANGELOG.md

@@ -21,6 +21,7 @@ All notable changes to `phalcon/debugbar` are documented here. The format is bas
   metadata sidecars. History requires an explicit absolute writable path and is
   disabled by default. Storage creation is serialized and capped across browser
   identities, with least-recently-updated eviction.
+- `ResponseListener::handle()` runs the injection step with a `ResponseInterface` and no event. The MVC listener calls it, so MVC behavior does not change. [#39](https://github.com/phalcon/debugbar/issues/39)
 
 ### Fixed
 

src/DebugBar/ResponseListener.php

@@ -32,7 +32,8 @@
 /**
  * The `application:beforeSendResponse` listener. On the event it runs the access
  * gate, aggregates the bar, sets the diagnostic headers, and - for an injectable
- * HTML response - renders and splices the bar in.
+ * HTML response - renders and splices the bar in. `handle()` does the same work
+ * with no event.
  *
  * @phpstan-import-type request_context from DebugBarTypes
  * @phpstan-import-type payload from DebugBarTypes
@@ -58,6 +59,11 @@ public function __invoke(EventInterface $event, mixed $source, mixed $response):
             return;
         }
 
+        $this->handle($response);
+    }
+
+    public function handle(ResponseInterface $response): void
+    {
         if ($this->historyEndpoint?->matches()) {
             return;
         }

tests/Unit/DebugBar/ResponseListenerTest.php

@@ -147,6 +147,18 @@ function (string $name, string $value, array $options) use (&$call): bool {
         $this->assertFalse(is_dir($path));
     }
 
+    public function testHandleInjectsWithoutAnEvent(): void
+    {
+        $listener = $this->listener(false);
+
+        $response = new Response();
+        $response->setContent('<html><body>hi</body></html>');
+
+        $listener->handle($response);
+
+        $this->assertStringContainsString('phalcon-debugbar-data', $response->getContent());
+    }
+
     public function testIgnoresNonResponsePayloads(): void
     {
         $listener = $this->listener(true);