Add functional tests for the new Symfony module assertions

Cover assertSessionHasFlashMessage, mockService, seeNumQueriesIsLessThan,
dontSeeDuplicateQueries, and the Messenger in-memory transport assertions
(grab/seeContains/seeQueueCount/consume).

Author: TavoNiievez

tests/Functional/DoctrineCest.php

@@ -43,4 +43,11 @@ public function seeNumRecords(FunctionalTester $I)
     {
         $I->seeNumRecords(1, User::class);
     }
+
+    public function queryCountAssertions(FunctionalTester $I): void
+    {
+        $I->amOnPage('/run-queries');
+        $I->seeNumQueriesIsLessThan(10);
+        $I->dontSeeDuplicateQueries();
+    }
 }

tests/Functional/MessengerCest.php

@@ -43,4 +43,17 @@ public function noMessagesDispatched(FunctionalTester $I): void
         $I->seeDispatchedMessageCount(0);
         $I->assertSame([], $I->grabDispatchedMessageClasses());
     }
+
+    public function messengerTransport(FunctionalTester $I): void
+    {
+        $I->amOnPage('/dispatch-message');
+        $I->seeMessengerQueueCount(1, 'async');
+        $I->seeMessengerTransportContains(SendWelcomeMessage::class, 'async');
+
+        $envelope = $I->grabMessengerTransport('async')->getSent()[0];
+        $I->assertInstanceOf(SendWelcomeMessage::class, $envelope->getMessage());
+
+        $I->consumeMessengerMessages('async');
+        $I->assertCount(1, $I->grabMessengerTransport('async')->getAcknowledged());
+    }
 }

tests/Functional/ServicesCest.php

@@ -4,6 +4,7 @@
 
 namespace App\Tests\Functional;
 
+use App\Service\Greeting;
 use App\Tests\Support\FunctionalTester;
 use Symfony\Component\Security\Core\Security;
 
@@ -14,4 +15,17 @@ public function grabService(FunctionalTester $I)
         $security = $I->grabService('security.helper');
         $I->assertInstanceOf(Security::class, $security);
     }
+
+    public function mockService(FunctionalTester $I): void
+    {
+        $I->mockService(Greeting::class, new class extends Greeting {
+            public function greet(): string
+            {
+                return 'Mocked greeting!';
+            }
+        });
+
+        $I->amOnPage('/greeting');
+        $I->see('Mocked greeting!');
+    }
 }

tests/Functional/SessionCest.php

@@ -96,4 +96,12 @@ public function seeSessionHasValues(FunctionalTester $I)
 
         $I->seeSessionHasValues(['_security_main', '_security_main']);
     }
+
+    public function assertSessionHasFlashMessage(FunctionalTester $I): void
+    {
+        $I->stopFollowingRedirects();
+        $I->amOnPage('/flash');
+        $I->assertSessionHasFlashMessage('success');
+        $I->assertSessionHasFlashMessage('success', 'Welcome back!');
+    }
 }