[DoctrineBridge] Auto-validation must work if no regex are passed

Author: dunglas

Tests/Validator/DoctrineLoaderTest.php

@@ -173,7 +173,7 @@ public function testClassValidator(bool $expected, string $classValidatorRegexp
     public function regexpProvider()
     {
         return [
-            [false, null],
+            [true, null],
             [true, '{^'.preg_quote(DoctrineLoaderEntity::class).'$|^'.preg_quote(Entity::class).'$}'],
             [false, '{^'.preg_quote(Entity::class).'$}'],
         ];

Validator/DoctrineLoader.php

@@ -43,7 +43,7 @@ public function __construct(EntityManagerInterface $entityManager, string $class
     public function loadClassMetadata(ClassMetadata $metadata): bool
     {
         $className = $metadata->getClassName();
-        if (null === $this->classValidatorRegexp || !preg_match($this->classValidatorRegexp, $className)) {
+        if (null !== $this->classValidatorRegexp && !preg_match($this->classValidatorRegexp, $className)) {
             return false;
         }