feat: decide the staffing split per ski level

tests/Entity/StaffingRuleTest.php

@@ -35,9 +35,10 @@ class StaffingRuleTest extends TestCase
     public static function combinations(): iterable
     {
         yield 'guides only' => [self::rule(2), []];
-        yield 'split with a level per guide' => [self::rule(2, beginner: true, advanced: true, split: true), []];
-        yield 'split with more levels than guides' => [self::rule(1, beginner: true, advanced: true, split: true), ['split']];
-        yield 'split without a level' => [self::rule(2, split: true), ['split']];
+        yield 'both levels taken over, a guide each' => [self::rule(2, beginner: true, advanced: true, splitBeginner: true, splitAdvanced: true), []];
+        yield 'one guide takes over one of two levels' => [self::rule(1, beginner: true, advanced: true, splitAdvanced: true), []];
+        yield 'more levels taken over than guides' => [self::rule(1, beginner: true, advanced: true, splitBeginner: true, splitAdvanced: true), ['guides']];
+        yield 'taking over a level that is off' => [self::rule(2, advanced: true, splitBeginner: true), ['splitBeginner']];
         yield 'guiding without a guide' => [self::rule(0, beginner: true, guiding: true), ['guiding']];
         yield 'courses without guides' => [self::rule(0, beginner: true), []];
     }
@@ -46,7 +47,8 @@ class StaffingRuleTest extends TestCase
         int $guides,
         bool $beginner = false,
         bool $advanced = false,
-        bool $split = false,
+        bool $splitBeginner = false,
+        bool $splitAdvanced = false,
         bool $guiding = false,
     ): StaffingRule {
         return (new StaffingRule())
@@ -54,7 +56,8 @@ class StaffingRuleTest extends TestCase
             ->setGuides($guides)
             ->setSkiBeginner($beginner)
             ->setSkiAdvanced($advanced)
-            ->setSplit($split)
+            ->setSplitBeginner($splitBeginner)
+            ->setSplitAdvanced($splitAdvanced)
             ->setGuiding($guiding)
         ;
     }