Also report enum case outside of enum in traits

Add trait test case as requested in review. Handle the trait scope
separately since traits are analyzed in the context of their consumer class.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people

src/Rules/EnumCases/EnumCaseOutsideEnumRule.php

@@ -22,6 +22,15 @@ public function getNodeType(): string
 
 	public function processNode(Node $node, Scope $scope): array
 	{
+		if ($scope->isInTrait()) {
+			return [
+				RuleErrorBuilder::message('Enum case can only be used in enums.')
+					->nonIgnorable()
+					->identifier('enum.caseOutsideOfEnum')
+					->build(),
+			];
+		}
+
 		if (!$scope->isInClass()) {
 			return [];
 		}

tests/PHPStan/Rules/EnumCases/EnumCaseOutsideEnumRuleTest.php

@@ -29,6 +29,10 @@ public function testRule(): void
 				'Enum case can only be used in enums.',
 				14,
 			],
+			[
+				'Enum case can only be used in enums.',
+				19,
+			],
 		]);
 	}
 

tests/PHPStan/Rules/EnumCases/data/bug-14252.php

@@ -14,6 +14,16 @@ interface Bar
 	case Active;
 }
 
+trait Baz
+{
+	case Active;
+}
+
+class BazConsumer
+{
+	use Baz;
+}
+
 enum Qux
 {
 	case Active;