diff --git a/src/Bundle/ChillDocGeneratorBundle/Serializer/Normalizer/DocGenObjectNormalizer.php b/src/Bundle/ChillDocGeneratorBundle/Serializer/Normalizer/DocGenObjectNormalizer.php
index 8361e1b59..f97d90e66 100644
--- a/src/Bundle/ChillDocGeneratorBundle/Serializer/Normalizer/DocGenObjectNormalizer.php
+++ b/src/Bundle/ChillDocGeneratorBundle/Serializer/Normalizer/DocGenObjectNormalizer.php
@@ -221,6 +221,7 @@ class DocGenObjectNormalizer implements NormalizerAwareInterface, NormalizerInte
 
             if (is_iterable($value)) {
                 $arr = [];
+
                 foreach ($value as $k => $v) {
                     $arr[$k] =
                         $this->normalizer->normalize($v, $format, array_merge(
diff --git a/src/Bundle/ChillDocStoreBundle/Form/AccompanyingCourseDocumentType.php b/src/Bundle/ChillDocStoreBundle/Form/AccompanyingCourseDocumentType.php
index 1b5edb966..64a81e9c7 100644
--- a/src/Bundle/ChillDocStoreBundle/Form/AccompanyingCourseDocumentType.php
+++ b/src/Bundle/ChillDocStoreBundle/Form/AccompanyingCourseDocumentType.php
@@ -14,7 +14,6 @@ namespace Chill\DocStoreBundle\Form;
 use Chill\DocStoreBundle\Entity\AccompanyingCourseDocument;
 use Chill\DocStoreBundle\Entity\Document;
 use Chill\DocStoreBundle\Entity\DocumentCategory;
-use Chill\DocStoreBundle\Entity\PersonDocument;
 use Chill\MainBundle\Entity\User;
 use Chill\MainBundle\Form\Type\ChillDateType;
 use Chill\MainBundle\Form\Type\ChillTextareaType;
@@ -76,7 +75,7 @@ class AccompanyingCourseDocumentType extends AbstractType
                 'query_builder' => static function (EntityRepository $er) {
                     return $er->createQueryBuilder('c')
                         ->where('c.documentClass = :docClass')
-                        ->setParameter('docClass',  AccompanyingCourseDocument::class);
+                        ->setParameter('docClass', AccompanyingCourseDocument::class);
                 },
                 'choice_label' => function ($entity = null) {
                     return $entity ? $this->translatableStringHelper->localize($entity->getName()) : '';
diff --git a/src/Bundle/ChillPersonBundle/Controller/RelationshipApiController.php b/src/Bundle/ChillPersonBundle/Controller/RelationshipApiController.php
index 57a8992ab..271b0cff7 100644
--- a/src/Bundle/ChillPersonBundle/Controller/RelationshipApiController.php
+++ b/src/Bundle/ChillPersonBundle/Controller/RelationshipApiController.php
@@ -18,7 +18,6 @@ use Chill\PersonBundle\Security\Authorization\PersonVoter;
 use Sensio\Bundle\FrameworkExtraBundle\Configuration\ParamConverter;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Validator\Validator\ValidatorInterface;
-use function array_values;
 
 class RelationshipApiController extends ApiController
 {
diff --git a/src/Bundle/ChillPersonBundle/Entity/Relationships/Relationship.php b/src/Bundle/ChillPersonBundle/Entity/Relationships/Relationship.php
index 87f250e4e..d51881bb2 100644
--- a/src/Bundle/ChillPersonBundle/Entity/Relationships/Relationship.php
+++ b/src/Bundle/ChillPersonBundle/Entity/Relationships/Relationship.php
@@ -19,6 +19,7 @@ use DateTimeImmutable;
 use DateTimeInterface;
 use Doctrine\ORM\Mapping as ORM;
 use Doctrine\ORM\Mapping\DiscriminatorColumn;
+use RuntimeException;
 use Symfony\Component\Serializer\Annotation as Serializer;
 use Symfony\Component\Serializer\Annotation\DiscriminatorMap;
 use Symfony\Component\Validator\Constraints as Assert;
@@ -117,18 +118,17 @@ class Relationship implements TrackCreationInterface, TrackUpdateInterface
     }
 
     /**
-     * Return the opposite person of the @link{counterpart} person.
+     * Return the opposite person of the @see{counterpart} person.
      *
      * this is the from person if the given is associated to the To,
      * or the To person otherwise.
      *
-     * @param Person $counterpartthe counterpart
      * @throw RuntimeException if the counterpart is neither in the from or to person
      */
     public function getOpposite(Person $counterpart): Person
     {
         if ($this->fromPerson !== $counterpart && $this->toPerson !== $counterpart) {
-            throw new \RuntimeException("the counterpart is neither the from nor to person for this relationship");
+            throw new RuntimeException('the counterpart is neither the from nor to person for this relationship');
         }
 
         if ($this->fromPerson === $counterpart) {
diff --git a/src/Bundle/ChillPersonBundle/Repository/Relationships/RelationshipRepository.php b/src/Bundle/ChillPersonBundle/Repository/Relationships/RelationshipRepository.php
index f82c061e9..9549a4564 100644
--- a/src/Bundle/ChillPersonBundle/Repository/Relationships/RelationshipRepository.php
+++ b/src/Bundle/ChillPersonBundle/Repository/Relationships/RelationshipRepository.php
@@ -12,7 +12,6 @@ declare(strict_types=1);
 namespace Chill\PersonBundle\Repository\Relationships;
 
 use Chill\PersonBundle\Entity\Person;
-use Chill\PersonBundle\Entity\Relationships\Relation;
 use Chill\PersonBundle\Entity\Relationships\Relationship;
 use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\EntityRepository;
@@ -21,16 +20,24 @@ use Doctrine\Persistence\ObjectRepository;
 
 class RelationshipRepository implements ObjectRepository
 {
-    private EntityRepository $repository;
-
     private EntityManagerInterface $em;
 
+    private EntityRepository $repository;
+
     public function __construct(EntityManagerInterface $em)
     {
         $this->repository = $em->getRepository(Relationship::class);
         $this->em = $em;
     }
 
+    public function countByPerson(Person $person): int
+    {
+        return $this->buildQueryByPerson($person)
+            ->select('COUNT(p)')
+            ->getQuery()
+            ->getSingleScalarResult();
+    }
+
     public function find($id): ?Relationship
     {
         return $this->repository->find($id);
@@ -47,7 +54,6 @@ class RelationshipRepository implements ObjectRepository
     }
 
     /**
-     * @param Person $person
      * @return array|Relationship[]
      */
     public function findByPerson(Person $person): array
@@ -58,12 +64,14 @@ class RelationshipRepository implements ObjectRepository
             ->getResult();
     }
 
-    public function countByPerson(Person $person): int
+    public function findOneBy(array $criteria): ?Relationship
     {
-        return $this->buildQueryByPerson($person)
-            ->select('COUNT(p)')
-            ->getQuery()
-            ->getSingleScalarResult();
+        return $this->findOneBy($criteria);
+    }
+
+    public function getClassName(): string
+    {
+        return Relationship::class;
     }
 
     private function buildQueryByPerson(Person $person): QueryBuilder
@@ -81,14 +89,4 @@ class RelationshipRepository implements ObjectRepository
 
         return $qb;
     }
-
-    public function findOneBy(array $criteria): ?Relationship
-    {
-        return $this->findOneBy($criteria);
-    }
-
-    public function getClassName(): string
-    {
-        return Relationship::class;
-    }
 }
diff --git a/src/Bundle/ChillPersonBundle/Serializer/Normalizer/PersonDocGenNormalizer.php b/src/Bundle/ChillPersonBundle/Serializer/Normalizer/PersonDocGenNormalizer.php
index 94fa8a652..169236104 100644
--- a/src/Bundle/ChillPersonBundle/Serializer/Normalizer/PersonDocGenNormalizer.php
+++ b/src/Bundle/ChillPersonBundle/Serializer/Normalizer/PersonDocGenNormalizer.php
@@ -16,7 +16,6 @@ use Chill\MainBundle\Templating\TranslatableStringHelper;
 use Chill\PersonBundle\Entity\Household\Household;
 use Chill\PersonBundle\Entity\Person;
 use Chill\PersonBundle\Entity\PersonAltName;
-use Chill\PersonBundle\Repository\Relationships\RelationRepository;
 use Chill\PersonBundle\Repository\Relationships\RelationshipRepository;
 use Chill\PersonBundle\Templating\Entity\PersonRender;
 use DateTimeInterface;
@@ -107,8 +106,8 @@ class PersonDocGenNormalizer implements
                 array_merge($context, [
                     'docgen:person:with-household' => false,
                     'docgen:person:with-relation' => false,
-                    'docgen:relationship:counterpart' => $person
-                    ])
+                    'docgen:relationship:counterpart' => $person,
+                ])
             );
         }
 
diff --git a/src/Bundle/ChillPersonBundle/Serializer/Normalizer/RelationshipDocGenNormalizer.php b/src/Bundle/ChillPersonBundle/Serializer/Normalizer/RelationshipDocGenNormalizer.php
index 948824b99..35e7f1056 100644
--- a/src/Bundle/ChillPersonBundle/Serializer/Normalizer/RelationshipDocGenNormalizer.php
+++ b/src/Bundle/ChillPersonBundle/Serializer/Normalizer/RelationshipDocGenNormalizer.php
@@ -1,19 +1,22 @@
 <?php
 
+/**
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
 namespace Chill\PersonBundle\Serializer\Normalizer;
 
 use Chill\MainBundle\Templating\TranslatableStringHelperInterface;
 use Chill\PersonBundle\Entity\Person;
-use Chill\PersonBundle\Entity\Relationships\Relation;
 use Chill\PersonBundle\Entity\Relationships\Relationship;
-use Symfony\Component\Serializer\Exception\CircularReferenceException;
-use Symfony\Component\Serializer\Exception\ExceptionInterface;
-use Symfony\Component\Serializer\Exception\InvalidArgumentException;
-use Symfony\Component\Serializer\Exception\LogicException;
 use Symfony\Component\Serializer\Normalizer\ContextAwareNormalizerInterface;
 use Symfony\Component\Serializer\Normalizer\NormalizerAwareInterface;
 use Symfony\Component\Serializer\Normalizer\NormalizerAwareTrait;
-use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
 
 class RelationshipDocGenNormalizer implements ContextAwareNormalizerInterface, NormalizerAwareInterface
 {
@@ -29,7 +32,7 @@ class RelationshipDocGenNormalizer implements ContextAwareNormalizerInterface, N
     /**
      * @param Relationship $relation
      */
-    public function normalize($relation, string $format = null, array $context = [])
+    public function normalize($relation, ?string $format = null, array $context = [])
     {
         $counterpart = $context['docgen:relationship:counterpart'] ?? null;
         $contextPerson = array_merge($context, [
@@ -46,8 +49,8 @@ class RelationshipDocGenNormalizer implements ContextAwareNormalizerInterface, N
 
         if (null === $relation) {
             return [
-                "id" => "",
-                "fromPerson" => $nullPerson = $this->normalizer->normalize(null, $format, $contextPerson),
+                'id' => '',
+                'fromPerson' => $nullPerson = $this->normalizer->normalize(null, $format, $contextPerson),
                 'toPerson' => $nullPerson,
                 'opposite' => $nullPerson,
                 'text' => '',
@@ -75,13 +78,13 @@ class RelationshipDocGenNormalizer implements ContextAwareNormalizerInterface, N
         ];
     }
 
-    public function supportsNormalization($data, string $format = null, array $context = [])
+    public function supportsNormalization($data, ?string $format = null, array $context = [])
     {
         if ('docgen' !== $format) {
             return false;
         }
 
         return $data instanceof Relationship || (null === $data
-            && ($context['docgen:expects'] ?? null) === Relationship::class);
+            && Relationship::class === ($context['docgen:expects'] ?? null));
     }
 }
diff --git a/src/Bundle/ChillPersonBundle/Service/DocGenerator/AccompanyingPeriodContext.php b/src/Bundle/ChillPersonBundle/Service/DocGenerator/AccompanyingPeriodContext.php
index 1b30d93fc..c6c4bf136 100644
--- a/src/Bundle/ChillPersonBundle/Service/DocGenerator/AccompanyingPeriodContext.php
+++ b/src/Bundle/ChillPersonBundle/Service/DocGenerator/AccompanyingPeriodContext.php
@@ -67,7 +67,9 @@ class AccompanyingPeriodContext implements
     }
 
     public function adminFormReverseTransform(array $data): array
-    {dump($data);
+    {
+        dump($data);
+
         if (array_key_exists('category', $data)) {
             $data['category'] = [
                 'idInsideBundle' => $data['category']->getIdInsideBundle(),
diff --git a/src/Bundle/ChillPersonBundle/Tests/Serializer/Normalizer/PersonDocGenNormalizerTest.php b/src/Bundle/ChillPersonBundle/Tests/Serializer/Normalizer/PersonDocGenNormalizerTest.php
index 892d16211..fea2cdc72 100644
--- a/src/Bundle/ChillPersonBundle/Tests/Serializer/Normalizer/PersonDocGenNormalizerTest.php
+++ b/src/Bundle/ChillPersonBundle/Tests/Serializer/Normalizer/PersonDocGenNormalizerTest.php
@@ -23,7 +23,6 @@ use Chill\PersonBundle\Repository\Relationships\RelationshipRepository;
 use Chill\PersonBundle\Serializer\Normalizer\PersonDocGenNormalizer;
 use Chill\PersonBundle\Templating\Entity\PersonRender;
 use Prophecy\Argument;
-use Prophecy\Argument\Token\AnyValueToken;
 use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
 use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
 use Symfony\Contracts\Translation\TranslatorInterface;
@@ -57,38 +56,6 @@ final class PersonDocGenNormalizerTest extends KernelTestCase
 
     private NormalizerInterface $normalizer;
 
-    private function buildPersonNormalizer(
-        ?PersonRender $personRender = null,
-        ?RelationshipRepository $relationshipRepository = null,
-        ?TranslatorInterface $translator = null,
-        ?TranslatableStringHelper $translatableStringHelper = null
-    ): PersonDocGenNormalizer {
-        $normalizer = new PersonDocGenNormalizer(
-            $personRender ?? self::$container->get(PersonRender::class),
-             $relationshipRepository ?? self::$container->get(RelationshipRepository::class),
-            $translator ??self::$container->get(TranslatorInterface::class),
-            $translatableStringHelper ?? self::$container->get(TranslatableStringHelperInterface::class)
-        );
-        $normalizerManager = $this->prophesize(NormalizerInterface::class);
-        $normalizerManager->supportsNormalization(Argument::any(), 'docgen', Argument::any())->willReturn(true);
-        $normalizerManager->normalize(Argument::type(Person::class), 'docgen', Argument::any())
-            ->will(function($args) use ($normalizer) {
-                return $normalizer->normalize($args[0], $args[1], $args[2]);
-            });
-        $normalizerManager->normalize(Argument::any(), 'docgen', Argument::any())->will(
-            function ($args) {
-                if (is_iterable($args[0])) {
-                    $r = [];
-                    foreach ($args[0] as $i) { $r[] = ['fake' => true, 'hash' => spl_object_hash($i)];}
-                    return $r;
-                }
-                return ['fake' => true, 'hash' => null !== $args[0] ? spl_object_hash($args[0]) : null];
-            });
-        $normalizer->setNormalizer($normalizerManager->reveal());
-
-        return $normalizer;
-    }
-
     protected function setUp()
     {
         self::bootKernel();
@@ -124,7 +91,7 @@ final class PersonDocGenNormalizerTest extends KernelTestCase
     {
         $normalized = $this->normalizer->normalize($person, 'docgen', [
             'docgen:expects' => Person::class,
-            'groups' => 'docgen:read'
+            'groups' => 'docgen:read',
         ]);
 
         $this->assertEquals($expected, $normalized, $msg);
@@ -136,28 +103,24 @@ final class PersonDocGenNormalizerTest extends KernelTestCase
         $person = new Person();
         $person
             ->setFirstName('Renaud')
-            ->setLastName('Mégane')
-            ;
+            ->setLastName('Mégane');
         $householdMember = new HouseholdMember();
         $householdMember
             ->setPosition((new Position())->setAllowHolder(true)->setLabel(['fr' => 'position'])
-                ->setShareHousehold(true))
-            ->setHolder(true)
-            ;
+            ->setShareHousehold(true))
+            ->setHolder(true);
         $person->addHouseholdParticipation($householdMember);
         $household->addMember($householdMember);
 
         $person = new Person();
         $person
             ->setFirstName('Citroen')
-            ->setLastName('Xsara')
-        ;
+            ->setLastName('Xsara');
         $householdMember = new HouseholdMember();
         $householdMember
             ->setPosition((new Position())->setAllowHolder(true)->setLabel(['fr' => 'position2'])
-                ->setShareHousehold(true))
-            ->setHolder(false)
-        ;
+            ->setShareHousehold(true))
+            ->setHolder(false);
         $person->addHouseholdParticipation($householdMember);
         $household->addMember($householdMember);
 
@@ -165,7 +128,6 @@ final class PersonDocGenNormalizerTest extends KernelTestCase
             'groups' => 'docgen:read',
             'docgen:expects' => Person::class,
             'docgen:person:with-household' => true,
-
         ]);
 
         $this->assertCount(2, $household->getMembers());
@@ -188,10 +150,10 @@ final class PersonDocGenNormalizerTest extends KernelTestCase
                 ->setReverseTitle(['fr' => 'Fils'])),
             (new Relationship())->setFromPerson($person)->setToPerson($mother)
                 ->setReverse(false)->setRelation((new Relation())->setTitle(['fr' => 'Mère'])
-                    ->setReverseTitle(['fr' => 'Fils'])),
+                ->setReverseTitle(['fr' => 'Fils'])),
             (new Relationship())->setFromPerson($person)->setToPerson($sister)
                 ->setReverse(true)->setRelation((new Relation())->setTitle(['fr' => 'Frère'])
-                    ->setReverseTitle(['fr' => 'Soeur'])),
+                ->setReverseTitle(['fr' => 'Soeur'])),
         ];
 
         $repository = $this->prophesize(RelationshipRepository::class);
@@ -209,4 +171,42 @@ final class PersonDocGenNormalizerTest extends KernelTestCase
         $this->assertArrayHasKey('relations', $actual);
         $this->assertCount(3, $actual['relations']);
     }
+
+    private function buildPersonNormalizer(
+        ?PersonRender $personRender = null,
+        ?RelationshipRepository $relationshipRepository = null,
+        ?TranslatorInterface $translator = null,
+        ?TranslatableStringHelper $translatableStringHelper = null
+    ): PersonDocGenNormalizer {
+        $normalizer = new PersonDocGenNormalizer(
+            $personRender ?? self::$container->get(PersonRender::class),
+            $relationshipRepository ?? self::$container->get(RelationshipRepository::class),
+            $translator ?? self::$container->get(TranslatorInterface::class),
+            $translatableStringHelper ?? self::$container->get(TranslatableStringHelperInterface::class)
+        );
+        $normalizerManager = $this->prophesize(NormalizerInterface::class);
+        $normalizerManager->supportsNormalization(Argument::any(), 'docgen', Argument::any())->willReturn(true);
+        $normalizerManager->normalize(Argument::type(Person::class), 'docgen', Argument::any())
+            ->will(static function ($args) use ($normalizer) {
+                return $normalizer->normalize($args[0], $args[1], $args[2]);
+            });
+        $normalizerManager->normalize(Argument::any(), 'docgen', Argument::any())->will(
+            static function ($args) {
+                if (is_iterable($args[0])) {
+                    $r = [];
+
+                    foreach ($args[0] as $i) {
+                        $r[] = ['fake' => true, 'hash' => spl_object_hash($i)];
+                    }
+
+                    return $r;
+                }
+
+                return ['fake' => true, 'hash' => null !== $args[0] ? spl_object_hash($args[0]) : null];
+            }
+        );
+        $normalizer->setNormalizer($normalizerManager->reveal());
+
+        return $normalizer;
+    }
 }
diff --git a/src/Bundle/ChillPersonBundle/Tests/Serializer/Normalizer/RelationshipDocGenNormalizerTest.php b/src/Bundle/ChillPersonBundle/Tests/Serializer/Normalizer/RelationshipDocGenNormalizerTest.php
index 5304eed7a..ea2da19a8 100644
--- a/src/Bundle/ChillPersonBundle/Tests/Serializer/Normalizer/RelationshipDocGenNormalizerTest.php
+++ b/src/Bundle/ChillPersonBundle/Tests/Serializer/Normalizer/RelationshipDocGenNormalizerTest.php
@@ -1,5 +1,14 @@
 <?php
 
+/**
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
 namespace Serializer\Normalizer;
 
 use Chill\MainBundle\Templating\TranslatableStringHelperInterface;
@@ -10,42 +19,36 @@ use Chill\PersonBundle\Serializer\Normalizer\RelationshipDocGenNormalizer;
 use PHPUnit\Framework\TestCase;
 use Prophecy\Argument;
 use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
+use function is_object;
 
-class RelationshipDocGenNormalizerTest extends TestCase
+/**
+ * @internal
+ * @coversNothing
+ */
+final class RelationshipDocGenNormalizerTest extends TestCase
 {
-    private function buildNormalizer(): RelationshipDocGenNormalizer
+    public function testNormalizeRelationshipNull()
     {
-        $translatableStringHelper = $this->prophesize(TranslatableStringHelperInterface::class);
-        $translatableStringHelper->localize(Argument::type('array'))->will(
-            function ($args) { return $args[0][array_keys($args[0])[0]]; }
+        $relationship = null;
+
+        $normalizer = $this->buildNormalizer();
+
+        $this->assertTrue($normalizer->supportsNormalization($relationship, 'docgen', [
+            'docgen:expects' => Relationship::class,
+        ]));
+        $this->assertFalse($normalizer->supportsNormalization($relationship, 'docgen', [
+            'docgen:expects' => Person::class,
+        ]));
+
+        $actual = $normalizer->normalize($relationship, 'docgen', [
+            'docgen:expects' => Relationship::class,
+        ]);
+        $this->assertIsArray($actual);
+        $this->assertEqualsCanonicalizing(
+            ['fromPerson', 'toPerson', 'id', 'relationId', 'text', 'opposite'],
+            array_keys($actual),
+            'check that the expected keys are present'
         );
-
-        $normalizer = new RelationshipDocGenNormalizer(
-            $translatableStringHelper->reveal()
-        );
-
-        $normalizerManager = $this->prophesize(NormalizerInterface::class);
-        $normalizerManager->supportsNormalization(Argument::any(), 'docgen', Argument::any())->willReturn(true);
-        $normalizerManager->normalize(Argument::type(Relationship::class), 'docgen', Argument::any())
-            ->will(function($args) use ($normalizer) {
-                return $normalizer->normalize($args[0], $args[1], $args[2]);
-            });
-        $normalizerManager->normalize(Argument::any(), 'docgen', Argument::any())->will(
-            function ($args) {
-                if (null === $args[0]) {
-                    return null;
-                } elseif (is_iterable($args[0])) {
-                    $r = [];
-                    foreach ($args[0] as $i) { $r[] = ['fake' => true, 'hash' => spl_object_hash($i)];}
-                    return $r;
-                } elseif (is_object($args[0])) {
-                    return ['fake' => true, 'hash' => null !== $args[0] ? spl_object_hash($args[0]) : null];
-                }
-                return $args[0];
-            });
-        $normalizer->setNormalizer($normalizerManager->reveal());
-
-        return $normalizer;
     }
 
     public function testNormalizeRelationshipWithCounterPart()
@@ -54,11 +57,11 @@ class RelationshipDocGenNormalizerTest extends TestCase
         $relationship
             ->setFromPerson($person1 = new Person())
             ->setToPerson($person2 = new Person())
-            ->setRelation((new Relation())->setTitle(['fr' => 'title'])
-                ->setReverseTitle(['fr' => 'reverse title'])
+            ->setRelation(
+                (new Relation())->setTitle(['fr' => 'title'])
+            ->setReverseTitle(['fr' => 'reverse title'])
             )
-            ->setReverse(false)
-            ;
+            ->setReverse(false);
 
         $normalizer = $this->buildNormalizer();
 
@@ -67,7 +70,7 @@ class RelationshipDocGenNormalizerTest extends TestCase
 
         $actual = $normalizer->normalize($relationship, 'docgen', [
             'docgen:expects' => Relationship::class,
-            'docgen:relationship:counterpart' => $person1
+            'docgen:relationship:counterpart' => $person1,
         ]);
 
         $this->assertIsArray($actual);
@@ -85,11 +88,11 @@ class RelationshipDocGenNormalizerTest extends TestCase
         $relationship
             ->setFromPerson($person1 = new Person())
             ->setToPerson($person2 = new Person())
-            ->setRelation((new Relation())->setTitle(['fr' => 'title'])
-                ->setReverseTitle(['fr' => 'reverse title'])
+            ->setRelation(
+                (new Relation())->setTitle(['fr' => 'title'])
+            ->setReverseTitle(['fr' => 'reverse title'])
             )
-            ->setReverse(false)
-        ;
+            ->setReverse(false);
 
         $normalizer = $this->buildNormalizer();
 
@@ -108,27 +111,48 @@ class RelationshipDocGenNormalizerTest extends TestCase
         $this->assertEquals(null, $actual['opposite']);
     }
 
-    public function testNormalizeRelationshipNull()
+    private function buildNormalizer(): RelationshipDocGenNormalizer
     {
-        $relationship = null;
-
-        $normalizer = $this->buildNormalizer();
-
-        $this->assertTrue($normalizer->supportsNormalization($relationship, 'docgen', [
-            'docgen:expects' => Relationship::class
-        ]));
-        $this->assertFalse($normalizer->supportsNormalization($relationship, 'docgen', [
-            'docgen:expects' => Person::class
-        ]));
-
-        $actual = $normalizer->normalize($relationship, 'docgen', [
-            'docgen:expects' => Relationship::class,
-        ]);
-        $this->assertIsArray($actual);
-        $this->assertEqualsCanonicalizing(
-            ['fromPerson', 'toPerson', 'id', 'relationId', 'text', 'opposite'],
-            array_keys($actual),
-            'check that the expected keys are present'
+        $translatableStringHelper = $this->prophesize(TranslatableStringHelperInterface::class);
+        $translatableStringHelper->localize(Argument::type('array'))->will(
+            static function ($args) { return $args[0][array_keys($args[0])[0]]; }
         );
+
+        $normalizer = new RelationshipDocGenNormalizer(
+            $translatableStringHelper->reveal()
+        );
+
+        $normalizerManager = $this->prophesize(NormalizerInterface::class);
+        $normalizerManager->supportsNormalization(Argument::any(), 'docgen', Argument::any())->willReturn(true);
+        $normalizerManager->normalize(Argument::type(Relationship::class), 'docgen', Argument::any())
+            ->will(static function ($args) use ($normalizer) {
+                return $normalizer->normalize($args[0], $args[1], $args[2]);
+            });
+        $normalizerManager->normalize(Argument::any(), 'docgen', Argument::any())->will(
+            static function ($args) {
+                if (null === $args[0]) {
+                    return null;
+                }
+
+                if (is_iterable($args[0])) {
+                    $r = [];
+
+                    foreach ($args[0] as $i) {
+                        $r[] = ['fake' => true, 'hash' => spl_object_hash($i)];
+                    }
+
+                    return $r;
+                }
+
+                if (is_object($args[0])) {
+                    return ['fake' => true, 'hash' => null !== $args[0] ? spl_object_hash($args[0]) : null];
+                }
+
+                return $args[0];
+            }
+        );
+        $normalizer->setNormalizer($normalizerManager->reveal());
+
+        return $normalizer;
     }
 }