wip: insurance booking in edit flow

tests/BusProNet/Model/BookingTest.php

@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace App\Tests\BusProNet\Model;
 
 use App\BusProNet\Model\Booking;
+use App\BusProNet\Model\Insurance;
 use App\BusProNet\Model\Service;
 use PHPUnit\Framework\TestCase;
 
@@ -69,4 +70,69 @@ class BookingTest extends TestCase
         $result = $booking->getSkiPassForParticipant(0);
         $this->assertNull($result);
     }
+
+    public function testGetInsuranceForParticipantReturnsCorrectInsurance(): void
+    {
+        $booking = new Booking();
+
+        // Create insurance for participants 0 and 2
+        $insurance1 = new Insurance();
+        $insurance1->id = 100;
+        $insurance1->label = 'Reiseschutz Platin';
+        $insurance1->mapping = [0, 2];
+
+        // Create insurance for participant 1
+        $insurance2 = new Insurance();
+        $insurance2->id = 200;
+        $insurance2->label = 'Reiseschutz Gold';
+        $insurance2->mapping = [1];
+
+        $booking->insurances = [
+            100 => $insurance1,
+            200 => $insurance2,
+        ];
+
+        // Test: participant 0 should get insurance1
+        $result = $booking->getInsuranceForParticipant(0);
+        $this->assertSame($insurance1, $result);
+        $this->assertEquals(100, $result->id);
+
+        // Test: participant 1 should get insurance2
+        $result = $booking->getInsuranceForParticipant(1);
+        $this->assertSame($insurance2, $result);
+        $this->assertEquals(200, $result->id);
+
+        // Test: participant 2 should get insurance1
+        $result = $booking->getInsuranceForParticipant(2);
+        $this->assertSame($insurance1, $result);
+
+        // Test: participant 3 should get null (no insurance assigned)
+        $result = $booking->getInsuranceForParticipant(3);
+        $this->assertNull($result);
+    }
+
+    public function testGetInsuranceForParticipantReturnsNullWhenNoInsurances(): void
+    {
+        $booking = new Booking();
+        $booking->insurances = [];
+
+        $result = $booking->getInsuranceForParticipant(0);
+        $this->assertNull($result);
+    }
+
+    public function testGetInsuranceForParticipantHandlesEmptyMapping(): void
+    {
+        $booking = new Booking();
+
+        // Create insurance with empty mapping
+        $insurance = new Insurance();
+        $insurance->id = 100;
+        $insurance->label = 'Reiseschutz';
+        $insurance->mapping = [];
+
+        $booking->insurances = [100 => $insurance];
+
+        $result = $booking->getInsuranceForParticipant(0);
+        $this->assertNull($result, 'Should return null when mapping is empty');
+    }
 }