Add more tests

src/Entity/Post.php

@@ -2,6 +2,7 @@
 
 namespace App\Entity;
 
+use ApiPlatform\Doctrine\Orm\Filter\SearchFilter;
 use ApiPlatform\Metadata;
 use ApiPlatform\Metadata\ApiProperty;
 use ApiPlatform\Metadata\ApiResource;
@@ -18,6 +19,7 @@ use Symfony\Component\Serializer\Attribute\Groups;
     normalizationContext: ['groups' => ['post:collection:read', 'post:read']],
 )]
 #[GetCollection(normalizationContext: ['groups' => ['post:collection:read']])]
+#[Metadata\ApiFilter(filterClass: SearchFilter::class, properties: ['species' => 'exact'])]
 class Post
 {
     #[ORM\Id]
@@ -149,6 +151,8 @@ class Post
     #[ORM\PreUpdate]
     public function setPublicationDateValue(): void
     {
-        $this->publicationDate = new \DateTimeImmutable();
+        if ($this->publicationDate === null) {
+            $this->publicationDate = new \DateTimeImmutable();
+        }
     }
 }