diff --git a/Document/AuthCodeManager.php b/Document/AuthCodeManager.php
index f8edfc72..05b2b44c 100644
--- a/Document/AuthCodeManager.php
+++ b/Document/AuthCodeManager.php
@@ -46,11 +46,6 @@ public function __construct(DocumentManager $dm, $class)
         $this->class = $class;
     }
 
-    public function getDocumentManager(): DocumentManager
-    {
-        return $this->dm;
-    }
-
     /**
      * {@inheritdoc}
      */
diff --git a/Document/ClientManager.php b/Document/ClientManager.php
index c3d15d52..5fde9b3d 100644
--- a/Document/ClientManager.php
+++ b/Document/ClientManager.php
@@ -46,16 +46,6 @@ public function __construct(DocumentManager $dm, $class)
         $this->class = $class;
     }
 
-    public function getRepository(): DocumentRepository
-    {
-        return $this->repository;
-    }
-
-    public function getDocumentManager(): DocumentManager
-    {
-        return $this->dm;
-    }
-
     /**
      * {@inheritdoc}
      */
diff --git a/Entity/AuthCodeManager.php b/Entity/AuthCodeManager.php
index 4803db99..355f2bd2 100644
--- a/Entity/AuthCodeManager.php
+++ b/Entity/AuthCodeManager.php
@@ -38,11 +38,6 @@ public function __construct(EntityManagerInterface $em, $class)
         $this->class = $class;
     }
 
-    public function getEntityManager(): EntityManagerInterface
-    {
-        return $this->em;
-    }
-
     /**
      * {@inheritdoc}
      */
diff --git a/Entity/ClientManager.php b/Entity/ClientManager.php
index ed80a9e3..346c9732 100644
--- a/Entity/ClientManager.php
+++ b/Entity/ClientManager.php
@@ -79,14 +79,4 @@ public function deleteClient(ClientInterface $client)
         $this->em->remove($client);
         $this->em->flush();
     }
-
-    public function getEntityManager(): EntityManagerInterface
-    {
-        return $this->em;
-    }
-
-    public function getRepository(): EntityRepository
-    {
-        return $this->repository;
-    }
 }
diff --git a/Entity/TokenManager.php b/Entity/TokenManager.php
index 4843618a..4a87c17f 100644
--- a/Entity/TokenManager.php
+++ b/Entity/TokenManager.php
@@ -94,14 +94,4 @@ public function deleteExpired()
 
         return $qb->getQuery()->execute();
     }
-
-    public function getEntityManager(): EntityManagerInterface
-    {
-        return $this->em;
-    }
-
-    public function getRepository(): EntityRepository
-    {
-        return $this->repository;
-    }
 }
diff --git a/Form/Handler/AuthorizeFormHandler.php b/Form/Handler/AuthorizeFormHandler.php
index 70ff6d0e..4f29097d 100644
--- a/Form/Handler/AuthorizeFormHandler.php
+++ b/Form/Handler/AuthorizeFormHandler.php
@@ -107,16 +107,6 @@ public function getScope()
         return $this->form->getData()->scope;
     }
 
-    public function getForm(): FormInterface
-    {
-        return $this->form;
-    }
-
-    public function getRequest()
-    {
-        return $this->requestStack;
-    }
-
     /**
      * Put form data in $_GET so that OAuth2 library will call Request::createFromGlobals().
      *
diff --git a/Tests/Document/AuthCodeManagerTest.php b/Tests/Document/AuthCodeManagerTest.php
index d3c5ca06..4ac4c670 100644
--- a/Tests/Document/AuthCodeManagerTest.php
+++ b/Tests/Document/AuthCodeManagerTest.php
@@ -19,8 +19,8 @@
 use Doctrine\ORM\AbstractQuery;
 use FOS\OAuthServerBundle\Document\AuthCodeManager;
 use FOS\OAuthServerBundle\Model\AuthCodeInterface;
+use FOS\OAuthServerBundle\Tests\TestCase;
 use PHPUnit\Framework\MockObject\MockObject;
-use PHPUnit\Framework\TestCase;
 
 /**
  * @group time-sensitive
@@ -81,7 +81,7 @@ public function setUp(): void
 
     public function testConstructWillSetParameters(): void
     {
-        self::assertSame($this->documentManager, $this->instance->getDocumentManager());
+        self::assertObjectPropertySame($this->documentManager, $this->instance, 'dm');
         self::assertSame($this->className, $this->instance->getClass());
     }
 
diff --git a/Tests/Document/ClientManagerTest.php b/Tests/Document/ClientManagerTest.php
index 7419d43f..5cc2bc72 100644
--- a/Tests/Document/ClientManagerTest.php
+++ b/Tests/Document/ClientManagerTest.php
@@ -17,8 +17,8 @@
 use Doctrine\ODM\MongoDB\Repository\DocumentRepository;
 use FOS\OAuthServerBundle\Document\ClientManager;
 use FOS\OAuthServerBundle\Model\ClientInterface;
+use FOS\OAuthServerBundle\Tests\TestCase;
 use PHPUnit\Framework\MockObject\MockObject;
-use PHPUnit\Framework\TestCase;
 use function random_bytes;
 use stdClass;
 
@@ -79,8 +79,8 @@ public function setUp(): void
 
     public function testConstructWillSetParameters(): void
     {
-        self::assertSame($this->documentManager, $this->instance->getDocumentManager());
-        self::assertSame($this->repository, $this->instance->getRepository());
+        self::assertObjectPropertySame($this->documentManager, $this->instance, 'dm');
+        self::assertObjectPropertySame($this->repository, $this->instance, 'repository');
         self::assertSame($this->className, $this->instance->getClass());
     }
 
diff --git a/Tests/Entity/AuthCodeManagerTest.php b/Tests/Entity/AuthCodeManagerTest.php
index 83fe59ca..6e9d98a4 100644
--- a/Tests/Entity/AuthCodeManagerTest.php
+++ b/Tests/Entity/AuthCodeManagerTest.php
@@ -20,8 +20,8 @@
 use Doctrine\ORM\QueryBuilder;
 use FOS\OAuthServerBundle\Entity\AuthCodeManager;
 use FOS\OAuthServerBundle\Model\AuthCodeInterface;
+use FOS\OAuthServerBundle\Tests\TestCase;
 use PHPUnit\Framework\MockObject\MockObject;
-use PHPUnit\Framework\TestCase;
 
 /**
  * @group time-sensitive
@@ -62,7 +62,7 @@ public function setUp(): void
 
     public function testConstructWillSetParameters(): void
     {
-        self::assertSame($this->entityManager, $this->instance->getEntityManager());
+        self::assertObjectPropertySame($this->entityManager, $this->instance, 'em');
         self::assertSame($this->className, $this->instance->getClass());
     }
 
diff --git a/Tests/Entity/ClientManagerTest.php b/Tests/Entity/ClientManagerTest.php
index 7ae539cb..194ab5f4 100644
--- a/Tests/Entity/ClientManagerTest.php
+++ b/Tests/Entity/ClientManagerTest.php
@@ -17,8 +17,8 @@
 use Doctrine\ORM\EntityRepository;
 use FOS\OAuthServerBundle\Entity\ClientManager;
 use FOS\OAuthServerBundle\Model\ClientInterface;
+use FOS\OAuthServerBundle\Tests\TestCase;
 use PHPUnit\Framework\MockObject\MockObject;
-use PHPUnit\Framework\TestCase;
 use function random_bytes;
 
 /**
@@ -74,8 +74,8 @@ public function setUp(): void
 
     public function testConstructWillSetParameters(): void
     {
-        self::assertSame($this->entityManager, $this->instance->getEntityManager());
-        self::assertSame($this->repository, $this->instance->getRepository());
+        self::assertObjectPropertySame($this->entityManager, $this->instance, 'em');
+        self::assertObjectPropertySame($this->repository, $this->instance, 'repository');
         self::assertSame($this->className, $this->instance->getClass());
     }
 
diff --git a/Tests/Entity/TokenManagerTest.php b/Tests/Entity/TokenManagerTest.php
index 39f7fc96..97f03543 100644
--- a/Tests/Entity/TokenManagerTest.php
+++ b/Tests/Entity/TokenManagerTest.php
@@ -21,8 +21,8 @@
 use FOS\OAuthServerBundle\Entity\AccessToken;
 use FOS\OAuthServerBundle\Entity\TokenManager;
 use FOS\OAuthServerBundle\Model\TokenInterface;
+use FOS\OAuthServerBundle\Tests\TestCase;
 use PHPUnit\Framework\MockObject\MockObject;
-use PHPUnit\Framework\TestCase;
 use function random_bytes;
 
 /**
@@ -78,8 +78,8 @@ public function setUp(): void
 
     public function testConstructWillSetParameters(): void
     {
-        self::assertSame($this->entityManager, $this->instance->getEntityManager());
-        self::assertSame($this->repository, $this->instance->getRepository());
+        self::assertObjectPropertySame($this->entityManager, $this->instance, 'em');
+        self::assertObjectPropertySame($this->repository, $this->instance, 'repository');
         self::assertSame($this->className, $this->instance->getClass());
     }
 
diff --git a/Tests/Form/Handler/AuthorizeFormHandlerTest.php b/Tests/Form/Handler/AuthorizeFormHandlerTest.php
index 12f7ab10..4e888615 100644
--- a/Tests/Form/Handler/AuthorizeFormHandlerTest.php
+++ b/Tests/Form/Handler/AuthorizeFormHandlerTest.php
@@ -15,9 +15,9 @@
 
 use FOS\OAuthServerBundle\Form\Handler\AuthorizeFormHandler;
 use FOS\OAuthServerBundle\Form\Model\Authorize;
+use FOS\OAuthServerBundle\Tests\TestCase;
 use InvalidArgumentException;
 use PHPUnit\Framework\MockObject\MockObject;
-use PHPUnit\Framework\TestCase;
 use function random_bytes;
 use ReflectionException;
 use ReflectionMethod;
@@ -476,7 +476,7 @@ protected function getReflectionMethod(string $methodName): ReflectionMethod
      */
     private function assertAttributesWereSet(?MockObject $request): void
     {
-        self::assertSame($this->form, $this->instance->getForm());
-        self::assertSame($request, $this->instance->getRequest());
+        self::assertObjectPropertySame($this->form, $this->instance, 'form');
+        self::assertObjectPropertySame($request, $this->instance, 'requestStack');
     }
 }
diff --git a/Tests/TestCase.php b/Tests/TestCase.php
index 7ec4c0d9..30089077 100644
--- a/Tests/TestCase.php
+++ b/Tests/TestCase.php
@@ -13,6 +13,37 @@
 
 namespace FOS\OAuthServerBundle\Tests;
 
-class TestCase extends \PHPUnit\Framework\TestCase
+use PHPUnit\Framework\TestCase as BaseTestCase;
+use ReflectionClass;
+
+class TestCase extends BaseTestCase
 {
+    /**
+     * Assert sameness to the value of an object's private or protected member.
+     *
+     * @param mixed $expected
+     * @param object $object
+     * @param string $property
+     */
+    protected static function assertObjectPropertySame($expected, object $object, string $property): void
+    {
+        self::assertSame($expected, self::getProtectedMemberValue($object, $property));
+    }
+
+    /**
+     * Get the value of an object's private or protected member.
+     *
+     * @param object $object
+     * @param string $property
+     *
+     * @return mixed
+     */
+    protected static function getProtectedMemberValue(object $object, string $property)
+    {
+        $reflectionClass = new ReflectionClass($object);
+        $reflectionProperty = $reflectionClass->getProperty($property);
+        $reflectionProperty->setAccessible(true);
+
+        return $reflectionProperty->getValue($object);
+    }
 }