Add tests for Symfony Mime Component assertions

Author: TavoNiievez

src/Utils/Mailer.php

@@ -25,6 +25,8 @@ public function sendConfirmationEmail(User $user): TemplatedEmail
             ->from('jeison_doe@gmail.com')
             ->to(new Address($user->getEmail()))
             ->subject('Account created successfully')
+            ->attach('Example attachment')
+            ->text('Example text body')
             ->htmlTemplate('emails/registration.html.twig')
             ->context(['user' => $user]);
 

tests/Functional/MimeCest.php

@@ -0,0 +1,74 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Tests\Functional;
+
+use App\Entity\User;
+use App\Tests\FunctionalTester;
+use App\Utils\Mailer;
+
+final class MimeCest
+{
+    public function _before(FunctionalTester $I)
+    {
+        /** @var Mailer $mailer */
+        $mailer = $I->grabService(Mailer::class);
+        $mailer->sendConfirmationEmail(
+            User::create(
+                'jane_doe@gmail.com',
+                '123456'
+            )
+        );
+    }
+
+    public function assertEmailAddressContains(FunctionalTester $I)
+    {
+        $I->assertEmailAddressContains('To', 'jane_doe@gmail.com');
+    }
+
+    public function assertEmailAttachmentCount(FunctionalTester $I)
+    {
+        $I->assertEmailAttachmentCount(1);
+    }
+
+    public function assertEmailHasHeader(FunctionalTester $I)
+    {
+        $I->assertEmailHasHeader('From');
+    }
+
+    public function assertEmailHeaderNotSame(FunctionalTester $I)
+    {
+        $I->assertEmailHeaderNotSame('To', 'john_doe@gmail.com');
+    }
+
+    public function assertEmailHeaderSame(FunctionalTester $I)
+    {
+        $I->assertEmailHeaderSame('To', 'jane_doe@gmail.com');
+    }
+
+    public function assertEmailHtmlBodyContains(FunctionalTester $I)
+    {
+        $I->assertEmailHtmlBodyContains('Example Email');
+    }
+
+    public function assertEmailHtmlBodyNotContains(FunctionalTester $I)
+    {
+        $I->assertEmailHtmlBodyNotContains('jane_doe@gmail.com');
+    }
+
+    public function assertEmailNotHasHeader(FunctionalTester $I)
+    {
+        $I->assertEmailNotHasHeader('Bcc');
+    }
+
+    public function assertEmailTextBodyContains(FunctionalTester $I)
+    {
+        $I->assertEmailTextBodyContains('Example text body');
+    }
+
+    public function assertEmailTextBodyNotContains(FunctionalTester $I)
+    {
+        $I->assertEmailTextBodyNotContains('Example Email');
+    }
+}