Test that enum is final

build/rector-downgrade.php

@@ -27,6 +27,7 @@
 	$parameters->set(Option::PHP_VERSION_FEATURES, $targetPhpVersionId);
 	$parameters->set(Option::SKIP, [
 		'tests/*/data/*',
+		'tests/*/Fixture/*',
 		'tests/PHPStan/Analyser/traits/*',
 		'tests/PHPStan/Generics/functions.php',
 		'tests/e2e/resultCache_1.php',

phpcs.xml

@@ -166,6 +166,7 @@
 		</properties>
 	</rule>
 	<exclude-pattern>tests/*/data</exclude-pattern>
+	<exclude-pattern>tests/*/Fixture</exclude-pattern>
 	<exclude-pattern>tests/e2e/resultCache_1.php</exclude-pattern>
 	<exclude-pattern>tests/e2e/resultCache_2.php</exclude-pattern>
 	<exclude-pattern>tests/e2e/resultCache_3.php</exclude-pattern>

src/Reflection/ClassReflection.php

@@ -945,10 +945,13 @@ public function isInternal(): bool
 
 	public function isFinal(): bool
 	{
+		if ($this->isFinalByKeyword()) {
+			return true;
+		}
+
 		if ($this->isFinal === null) {
 			$resolvedPhpDoc = $this->getResolvedPhpDoc();
-			$this->isFinal = $this->reflection->isFinal()
-				|| ($resolvedPhpDoc !== null && $resolvedPhpDoc->isFinal());
+			$this->isFinal = $resolvedPhpDoc !== null && $resolvedPhpDoc->isFinal();
 		}
 
 		return $this->isFinal;

tests/PHPStan/Fixture/TestEnum.php

@@ -0,0 +1,12 @@
+<?php declare(strict_types = 1); // lint >= 8.1
+
+namespace PHPStan\Fixture;
+
+enum TestEnum: int implements TestEnumInterface
+{
+
+	case ONE = 1;
+	case TWO = 2;
+	const CONST_ONE = 1;
+
+}

tests/PHPStan/Fixture/TestEnumInterface.php

@@ -0,0 +1,8 @@
+<?php declare(strict_types = 1); // lint >= 8.1
+
+namespace PHPStan\Fixture;
+
+interface TestEnumInterface
+{
+
+}

tests/PHPStan/Reflection/ClassReflectionTest.php

@@ -28,12 +28,14 @@
 use NestedTraits\BazTrait;
 use NestedTraits\NoTrait;
 use PHPStan\Broker\Broker;
+use PHPStan\Fixture\TestEnum;
 use PHPStan\Php\PhpVersion;
 use PHPStan\PhpDoc\PhpDocInheritanceResolver;
 use PHPStan\PhpDoc\StubPhpDocProvider;
 use PHPStan\Testing\PHPStanTestCase;
 use PHPStan\Type\FileTypeMapper;
 use ReflectionClass;
+use ReflectionEnum;
 use WrongClassConstantFile\SecuredRouter;
 use function array_map;
 use function array_values;
@@ -324,4 +326,18 @@ public function dataNestedRecursiveTraits(): array
 		];
 	}
 
+	public function testEnumIsFinal(): void
+	{
+		if (PHP_VERSION_ID < 80100) {
+			$this->markTestSkipped('Test requires PHP 8.1.');
+		}
+
+		$reflectionProvider = $this->createReflectionProvider();
+		$enum = $reflectionProvider->getClass(TestEnum::class);
+		$this->assertTrue($enum->isEnum());
+		$this->assertInstanceOf(ReflectionEnum::class, $enum->getNativeReflection());
+		$this->assertTrue($enum->isFinal());
+		$this->assertTrue($enum->isFinalByKeyword());
+	}
+
 }