ClassReflection: narrow getNativeReflection after isEnum is true

Author: janedbal

build/more-enum-adapter-errors.neon

@@ -1,9 +1,5 @@
 parameters:
 	ignoreErrors:
-		-
-			message: "#^Parameter \\#1 \\$expected of method PHPUnit\\\\Framework\\\\Assert\\:\\:assertInstanceOf\\(\\) expects class\\-string\\<ReflectionEnum\\>, string given\\.$#"
-			count: 1
-			path: ../tests/PHPStan/Reflection/ClassReflectionTest.php
 		-
 			message: "#^Strict comparison using \\!\\=\\= between class\\-string and 'UnitEnum' will always evaluate to true\\.$#"
 			count: 1
@@ -23,3 +19,6 @@ parameters:
 			message: "#^Class BackedEnum not found\\.$#"
 			count: 1
 			path: ../src/Type/Php/BackedEnumFromMethodDynamicReturnTypeExtension.php
+
+		-
+			message: "#^Call to method PHPStan\\\\Reflection\\\\ClassReflection::isEnum\\(\\) will always evaluate to false\\.$#"

src/Reflection/ClassReflection.php

@@ -716,6 +716,7 @@ public function isTrait(): bool
 
 	/**
 	 * @phpstan-assert-if-true ReflectionEnum $this->reflection
+	 * @phpstan-assert-if-true ReflectionEnum $this->getNativeReflection()
 	 */
 	public function isEnum(): bool
 	{

tests/PHPStan/Reflection/ClassReflectionTest.php

@@ -296,7 +296,7 @@ public function testEnumIsFinal(): void
 		$reflectionProvider = $this->createReflectionProvider();
 		$enum = $reflectionProvider->getClass('PHPStan\Fixture\TestEnum');
 		$this->assertTrue($enum->isEnum());
-		$this->assertInstanceOf('ReflectionEnum', $enum->getNativeReflection());
+		$this->assertInstanceOf('ReflectionEnum', $enum->getNativeReflection()); // @phpstan-ignore-line Exact error differs on PHP 7.4 and others
 		$this->assertTrue($enum->isFinal());
 		$this->assertTrue($enum->isFinalByKeyword());
 	}