Add tests

Author: tatevikg1

tests/Unit/Domain/Messaging/EventSubscriber/InjectedByHeaderSubscriberTest.php

@@ -0,0 +1,89 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpList\Core\Tests\Unit\Domain\Messaging\EventSubscriber;
+
+use PhpList\Core\Domain\Messaging\EventSubscriber\InjectedByHeaderSubscriber;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\RequestStack;
+use Symfony\Component\Mailer\Envelope;
+use Symfony\Component\Mailer\Event\MessageEvent;
+use Symfony\Component\Mime\Address;
+use Symfony\Component\Mime\Email;
+use Symfony\Component\Mime\RawMessage;
+
+class InjectedByHeaderSubscriberTest extends TestCase
+{
+    public function testNoHeaderWhenNoCurrentRequest(): void
+    {
+        $requestStack = new RequestStack();
+        $subscriber = new InjectedByHeaderSubscriber($requestStack);
+
+        $email = (new Email())
+            ->from('[email protected]')
+            ->to('[email protected]')
+            ->subject('Subject')
+            ->text('Body');
+
+        $event = new MessageEvent($email, Envelope::create($email), 'test');
+
+        $subscriber->onMessage($event);
+
+        $this->assertFalse(
+            $email->getHeaders()->has('X-phpList-Injected-By'),
+            'Header must not be added when there is no current Request.'
+        );
+    }
+
+    public function testNoHeaderWhenMessageIsNotEmail(): void
+    {
+        $requestStack = new RequestStack();
+        // Push a Request to ensure the early return is due to non-Email message, not missing request
+        $requestStack->push(new Request(server: ['REQUEST_TIME' => time()]));
+
+        $subscriber = new InjectedByHeaderSubscriber($requestStack);
+
+        $raw = new RawMessage('raw');
+        // Create an arbitrary envelope; it does not need to match the message class
+        $envelope = new Envelope(new Address('[email protected]'), [new Address('[email protected]')]);
+        $event = new MessageEvent($raw, $envelope, 'test');
+
+        // RawMessage has no headers; the subscriber should return early
+        $subscriber->onMessage($event);
+
+        $this->assertSame('raw', $raw->toString()); // sanity check to use the variable
+        // Nothing to assert on headers (RawMessage has none), but the lack of exceptions is success
+        $this->addToAssertionCount(1);
+    }
+
+    public function testNoHeaderWhenRunningInCliEvenWithRequestAndEmail(): void
+    {
+        // In PHPUnit, PHP_SAPI is typically "cli"; ensure we have a Request to pass other guards
+        $request = new Request(server: [
+            'REQUEST_TIME' => time(),
+            'REMOTE_ADDR' => '127.0.0.1',
+        ]);
+        $requestStack = new RequestStack();
+        $requestStack->push($request);
+
+        $subscriber = new InjectedByHeaderSubscriber($requestStack);
+
+        $email = (new Email())
+            ->from('[email protected]')
+            ->to('[email protected]')
+            ->subject('Subject')
+            ->text('Body');
+
+        $event = new MessageEvent($email, Envelope::create($email), 'test');
+
+        $subscriber->onMessage($event);
+
+        // Because tests run under CLI SAPI, the header must not be added
+        $this->assertFalse(
+            $email->getHeaders()->has('X-phpList-Injected-By'),
+            'Header must not be added when running under CLI.'
+        );
+    }
+}