Merge branch '4.4' into 5.3

* 4.4:
  [gha] swap the php versions we use in jobs
  [DoctrineBridge] fix calling get_class on non-object
  Update PR template
  [HttpClient] Fix handling error info in MockResponse

Author: nicolas-grekas

Tests/Validator/Constraints/UniqueEntityValidatorTest.php

@@ -37,6 +37,7 @@
 use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
 use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntityValidator;
 use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
+use Symfony\Component\Validator\Exception\UnexpectedValueException;
 use Symfony\Component\Validator\Test\ConstraintValidatorTestCase;
 
 /**
@@ -859,6 +860,32 @@ public function testValidateUniquenessWithEmptyIterator($entity, $result)
         $this->assertNoViolation();
     }
 
+    public function testValueMustBeObject()
+    {
+        $constraint = new UniqueEntity([
+            'message' => 'myMessage',
+            'fields' => ['name'],
+            'em' => self::EM_NAME,
+        ]);
+
+        $this->expectException(UnexpectedValueException::class);
+
+        $this->validator->validate('foo', $constraint);
+    }
+
+    public function testValueCanBeNull()
+    {
+        $constraint = new UniqueEntity([
+            'message' => 'myMessage',
+            'fields' => ['name'],
+            'em' => self::EM_NAME,
+        ]);
+
+        $this->validator->validate(null, $constraint);
+
+        $this->assertNoViolation();
+    }
+
     public function resultWithEmptyIterator(): array
     {
         $entity = new SingleIntIdEntity(1, 'foo');

Validator/Constraints/UniqueEntityValidator.php

@@ -18,6 +18,7 @@
 use Symfony\Component\Validator\ConstraintValidator;
 use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
 use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+use Symfony\Component\Validator\Exception\UnexpectedValueException;
 
 /**
  * Unique Entity Validator checks if one or a set of fields contain unique values.
@@ -63,6 +64,10 @@ public function validate($entity, Constraint $constraint)
             return;
         }
 
+        if (!\is_object($entity)) {
+            throw new UnexpectedValueException($entity, 'object');
+        }
+
         if ($constraint->em) {
             $em = $this->registry->getManager($constraint->em);
 

composer.json

@@ -59,6 +59,7 @@
         "symfony/http-kernel": "<5",
         "symfony/messenger": "<4.4",
         "symfony/property-info": "<5",
+        "symfony/proxy-manager-bridge": "<4.4.19",
         "symfony/security-bundle": "<5",
         "symfony/security-core": "<5.3",
         "symfony/validator": "<5.2"