Compatibility with MongoDB 5.0 (#2401)

* Add MongoDB 5.0 to test matrix

* Ensure collMod.validator is an object

Author: malarzm

.github/workflows/continuous-integration.yml

@@ -23,6 +23,7 @@ jobs:
           - "8.0"
           - "8.1"
         mongodb-version:
+          - "5.0"
           - "4.4"
           - "4.2"
           - "4.0"

lib/Doctrine/ODM/MongoDB/SchemaManager.php

@@ -21,7 +21,9 @@
 use function array_unique;
 use function array_values;
 use function assert;
+use function count;
 use function in_array;
+use function is_array;
 use function is_string;
 use function iterator_count;
 use function iterator_to_array;
@@ -352,9 +354,9 @@ public function updateDocumentValidator(string $documentName, ?int $maxTimeMs =
             throw new InvalidArgumentException('Cannot update validators for files, views, mapped super classes, embedded documents or aggregation result documents.');
         }
 
-        $validator = [];
-        if ($class->getValidator() !== null) {
-            $validator = $class->getValidator();
+        $validator = $class->getValidator();
+        if ($validator === null || (is_array($validator) && count($validator) === 0)) {
+            $validator = (object) [];
         }
 
         $collection       = $this->dm->getDocumentCollection($class->name);

tests/Doctrine/ODM/MongoDB/Tests/SchemaManagerTest.php

@@ -472,7 +472,7 @@ public function testUpdateDocumentValidatorReset(array $expectedWriteOptions, ?i
             ->with(
                 [
                     'collMod' => $class->collection,
-                    'validator' => [],
+                    'validator' => (object) [],
                     'validationAction' => ClassMetadata::SCHEMA_VALIDATION_ACTION_ERROR,
                     'validationLevel' => ClassMetadata::SCHEMA_VALIDATION_LEVEL_STRICT,
                 ],