feat: split booking between participants and applicant

addresses #869f2q1vu

tests/Form/Model/ParticipantEditDtoTest.php

@@ -877,7 +877,7 @@ class ParticipantEditDtoTest extends TestCase
      * available ski pass. Ski pass validation depends on the travel actually offering
      * passes, so a travel without them is a distinct fixture, not the default.
      */
-    public function testChildWithoutEmailPassesStrictValidation(): void
+    public function testChildWithoutEmailFailsStrictValidation(): void
     {
         $bookingDto = $this->createBookingDtoWithParticipants([
             $this->createAdultParticipant('[email protected]'),
@@ -886,10 +886,14 @@ class ParticipantEditDtoTest extends TestCase
 
         $violations = $this->validateStrict($bookingDto, 1);
 
-        $this->assertSame([], $this->emailRequiredMessages($violations));
+        $this->assertSame(
+            ['Bitte angeben'],
+            $this->emailRequiredMessages($violations),
+            'BusPro requires a Mail-Adresse for every participant, children included'
+        );
     }
 
-    public function testChildWithNullEmailPassesStrictValidation(): void
+    public function testChildWithNullEmailFailsStrictValidation(): void
     {
         $child = $this->createChildParticipant('');
         $child->email = null;
@@ -901,7 +905,23 @@ class ParticipantEditDtoTest extends TestCase
 
         $violations = $this->validateStrict($bookingDto, 1);
 
-        $this->assertSame([], $this->emailRequiredMessages($violations));
+        $this->assertSame(['Bitte angeben'], $this->emailRequiredMessages($violations));
+    }
+
+    public function testChildSharingTheApplicantsEmailPassesStrictValidation(): void
+    {
+        $bookingDto = $this->createBookingDtoWithParticipants([
+            $this->createAdultParticipant('[email protected]'),
+            $this->createChildParticipant('[email protected]'),
+        ]);
+
+        $violations = $this->validateStrict($bookingDto, 1);
+
+        $this->assertSame(
+            [],
+            $this->emailRequiredMessages($violations),
+            'A child inherits the applicant address, which BusPro accepts'
+        );
     }
 
     public function testChildWithMalformedEmailStillFailsEmailFormatValidation(): void
@@ -984,7 +1004,7 @@ class ParticipantEditDtoTest extends TestCase
         $this->assertSame(['Bitte angeben'], $this->emailRequiredMessages($violations));
     }
 
-    public function testDependentOneDayShortOfSixteenDoesNotRequireEmail(): void
+    public function testDependentOneDayShortOfSixteenStillRequiresEmail(): void
     {
         $participant = $this->createAdultParticipant('');
         $participant->dateOfBirth = (new \DateTimeImmutable('today'))->modify('-16 years')->modify('+1 day');
@@ -996,7 +1016,7 @@ class ParticipantEditDtoTest extends TestCase
 
         $violations = $this->validateStrict($bookingDto, 1);
 
-        $this->assertSame([], $this->emailRequiredMessages($violations));
+        $this->assertSame(['Bitte angeben'], $this->emailRequiredMessages($violations));
     }
 
     /**