Add test for dynamic static call on object instance (MyEnum $enum)

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

Author: 2 people

tests/PHPStan/Rules/Pure/PureMethodRuleTest.php

@@ -396,7 +396,7 @@ public function testBug14557(): void
 		$this->analyse([__DIR__ . '/data/bug-14557.php'], [
 			[
 				'Impure call to method Bug14557\SomeClass::impureStaticMethod() in pure method Bug14557\Foo::impureViaClassString().',
-				85,
+				93,
 			],
 		]);
 	}

tests/PHPStan/Rules/Pure/data/bug-14557-function.php

@@ -45,3 +45,11 @@ function tryFromClassString(string $enum): ?MyEnum
 {
 	return $enum::tryFrom('foo');
 }
+
+/**
+ * @phpstan-pure
+ */
+function fromEnum(MyEnum $enum): MyEnum
+{
+	return $enum::from('foo');
+}

tests/PHPStan/Rules/Pure/data/bug-14557.php

@@ -67,6 +67,14 @@ public function doLorem(string $enum): ?MyEnum
 		return $enum::tryFrom('foo');
 	}
 
+	/**
+	 * @phpstan-pure
+	 */
+	public function fromEnum(MyEnum $enum): MyEnum
+	{
+		return $enum::from('foo');
+	}
+
 	/**
 	 * @param class-string<SomeClass> $class
 	 * @phpstan-pure