Fix tests to be strict on WriteConcern type

Author: GromNaN

tests/Doctrine/ODM/MongoDB/Tests/Mapping/AbstractAnnotationDriverTestCase.php

@@ -148,7 +148,7 @@ public function testEmbeddedClassCantHaveShardKey(): void
     public function testDocumentAnnotationCanSpecifyWriteConcern(): void
     {
         $cm = $this->dm->getClassMetadata(AnnotationDriverTestWriteConcernMajority::class);
-        self::assertEquals('majority', $cm->writeConcern);
+        self::assertSame('majority', $cm->writeConcern);
 
         $cm = $this->dm->getClassMetadata(AnnotationDriverTestWriteConcernUnacknowledged::class);
         self::assertSame(0, $cm->writeConcern);

tests/Doctrine/ODM/MongoDB/Tests/Mapping/AbstractMappingDriverTestCase.php

@@ -101,7 +101,7 @@ public function testDocumentLevelReadPreference(ClassMetadata $class): ClassMeta
     #[Depends('testDocumentCollectionNameAndInheritance')]
     public function testDocumentLevelWriteConcern(ClassMetadata $class): ClassMetadata
     {
-        self::assertEquals(1, $class->getWriteConcern());
+        self::assertSame(1, $class->getWriteConcern());
 
         return $class;
     }