fix: keep post-booking newsletter failures out of the booking flow

tests/Service/BookingNewsletterOptInTest.php

@@ -110,6 +110,44 @@ class BookingNewsletterOptInTest extends TestCase
         self::assertSame(['[email protected]', '[email protected]'], $requestedEmails);
     }
 
+    public function testAFailingConsentLookupDoesNotEscapeToTheCaller(): void
+    {
+        $companions = $this->createCompanions([
+            '[email protected]',
+            '[email protected]',
+        ]);
+
+        $newsletterManager = $this->createMock(NewsletterManager::class);
+        $newsletterManager
+            ->method('hasConfirmedOptIn')
+            ->willReturnCallback(static function (string $email): bool {
+                if ('[email protected]' === $email) {
+                    throw new \RuntimeException('Database gone.');
+                }
+
+                return false;
+            });
+        $newsletterManager->method('hasPendingConfirmation')->willReturn(false);
+        $newsletterManager
+            ->expects(self::once())
+            ->method('requestConfirmation')
+            ->with('[email protected]');
+
+        $this->createService($newsletterManager)->subscribeCompanions($companions, 'Mia Muster');
+    }
+
+    public function testApplicantOptInFailureDoesNotEscapeToTheCaller(): void
+    {
+        $newsletterManager = $this->createStub(NewsletterManager::class);
+        $newsletterManager
+            ->method('requestConfirmation')
+            ->willThrowException(new \RuntimeException('Database gone.'));
+
+        $this->createService($newsletterManager)->subscribeApplicant('[email protected]', null);
+
+        $this->expectNotToPerformAssertions();
+    }
+
     public function testApplicantOptInUsesTheOwnWording(): void
     {
         $bookingDto = $this->createBookingDto([['[email protected]', 30]]);