fix: do not allow validator to assert/validate with no rules given

Author: andrepimpao

src/Validator.php

@@ -3,6 +3,7 @@
 namespace ProgrammatorDev\YetAnotherPhpValidator;
 
 use ProgrammatorDev\YetAnotherPhpValidator\Exception\RuleNotFoundException;
+use ProgrammatorDev\YetAnotherPhpValidator\Exception\UnexpectedValueException;
 use ProgrammatorDev\YetAnotherPhpValidator\Exception\ValidationException;
 use ProgrammatorDev\YetAnotherPhpValidator\Factory\Factory;
 use ProgrammatorDev\YetAnotherPhpValidator\Rule\RuleInterface;
@@ -48,6 +49,10 @@ public function __call(string $ruleName, array $arguments = []): self
      */
     public function assert(mixed $value, string $name): void
     {
+        if (empty($this->getRules())) {
+            throw new UnexpectedValueException('Validator rules not found: at least one rule is required.');
+        }
+
         foreach ($this->getRules() as $rule) {
             $rule->assert($value, $name);
         }

tests/ValidatorTest.php

@@ -3,6 +3,7 @@
 namespace ProgrammatorDev\YetAnotherPhpValidator\Test;
 
 use PHPUnit\Framework\Attributes\DataProvider;
+use ProgrammatorDev\YetAnotherPhpValidator\Exception\UnexpectedValueException;
 use ProgrammatorDev\YetAnotherPhpValidator\Exception\ValidationException;
 use ProgrammatorDev\YetAnotherPhpValidator\Rule\GreaterThan;
 use ProgrammatorDev\YetAnotherPhpValidator\Rule\LessThan;
@@ -12,6 +13,15 @@
 
 class ValidatorTest extends AbstractTest
 {
+    public function testValidatorRequiredRules()
+    {
+        $this->expectException(UnexpectedValueException::class);
+        $this->expectExceptionMessage('Validator rules not found: at least one rule is required.');
+
+        $validator = new Validator();
+        $validator->assert(true, 'test');
+    }
+
     #[DataProvider('provideValidatorUsageApproachData')]
     public function testValidatorGetRules(Validator $validator)
     {
@@ -23,7 +33,6 @@ public function testValidatorGetRules(Validator $validator)
     public function testValidatorFailureCondition(Validator $validator)
     {
         $this->assertFalse($validator->validate(false));
-
         $this->expectException(ValidationException::class);
         $validator->assert(false, 'test');
     }
@@ -32,7 +41,6 @@ public function testValidatorFailureCondition(Validator $validator)
     public function testValidatorSuccessCondition(Validator $validator)
     {
         $this->assertTrue($validator->validate(15));
-
         $validator->assert(15, 'test');
     }
 
@@ -52,7 +60,7 @@ public static function provideValidatorUsageApproachData(): \Generator
             )
         ];
         yield 'method approach' => [
-            (new Validator())
+            (new Validator)
                 ->addRule(new NotBlank())
                 ->addRule(new GreaterThan(10))
                 ->addRule(new LessThan(20))