Fix factory when validator has no constructor

This was affecting both v::version and v::attributes, making them
impossible to use except for the concrete interface.

This change allows these validators to be built using the chain.

Author: alganet

library/NamespacedValidatorFactory.php

@@ -72,6 +72,11 @@ private function createRule(string $ruleName, array $arguments = []): Validator
                     throw new InvalidClassException(sprintf('"%s" must be instantiable', $name));
                 }
 
+                $constructor = $reflection->getConstructor();
+                if ($constructor === null) {
+                    return $reflection->newInstance();
+                }
+
                 return $reflection->newInstanceArgs($arguments);
             } catch (ReflectionException) {
                 continue;

tests/library/Validators/NoConstructor.php

@@ -0,0 +1,26 @@
+<?php
+
+/*
+ * Copyright (c) Alexandre Gomes Gaigalas <alganet@gmail.com>
+ * SPDX-License-Identifier: MIT
+ */
+
+declare(strict_types=1);
+
+namespace Respect\Validation\Test\Validators;
+
+use Respect\Validation\Message\Template;
+use Respect\Validation\Validators\Core\Simple;
+
+#[Template(
+    '{{subject}} must be a no-constructor validator',
+    '{{subject}} must not be a no-constructor validator',
+)]
+final class NoConstructor extends Simple
+{
+    public function isValid(mixed $input): bool
+    {
+        // Accept everything for test purposes
+        return true;
+    }
+}

tests/unit/NamespacedRuleFactoryTest.php

@@ -18,6 +18,7 @@
 use Respect\Validation\Test\Transformers\StubTransformer;
 use Respect\Validation\Test\Validators\Invalid;
 use Respect\Validation\Test\Validators\MyAbstractClass;
+use Respect\Validation\Test\Validators\NoConstructor;
 use Respect\Validation\Test\Validators\Stub;
 use Respect\Validation\Test\Validators\Valid;
 
@@ -59,6 +60,17 @@ public function shouldDefineConstructorArgumentsWhenCreatingRule(): void
         self::assertSame($constructorArguments, $validator->validations);
     }
 
+    #[Test]
+    public function shouldCreateRuleWhenNoConstructorIgnoringArguments(): void
+    {
+        $constructorArguments = ['a', 'b'];
+
+        $factory = new NamespacedValidatorFactory(new StubTransformer(), [self::TEST_RULES_NAMESPACE]);
+        $validator = $factory->create('noConstructor', $constructorArguments);
+
+        self::assertInstanceOf(NoConstructor::class, $validator);
+    }
+
     #[Test]
     public function shouldThrowsAnExceptionWhenRuleIsInvalid(): void
     {