Add tests on doctrine collection purge

features/http_cache/tags.feature

@@ -103,3 +103,40 @@ Feature: Cache invalidation through HTTP Cache tags
     """
     Then the response status code should be 200
     And "/relation1s,/relation1s/1,/relation2s/2,/relation2s/1" IRIs should be purged
+
+  Scenario: Create a Relation3 with many to many
+    When I add "Content-Type" header equal to "application/ld+json"
+    And I send a "POST" request to "/relation3s" with body:
+    """
+    {
+      "relation2s": ["/relation2s/1", "/relation2s/2"]
+    }
+    """
+    Then the response status code should be 201
+    And "/relation3s,/relation2s/1,/relation2s/2" IRIs should be purged
+
+  Scenario: Get a Relation3
+    When I add "Content-Type" header equal to "application/ld+json"
+    And I send a "GET" request to "/relation3s"
+    Then the response status code should be 200
+    And the header "Cache-Tags" should be equal to "/relation3s/1,/relation2s/1,/relation2s/2,/relation3s"
+
+  Scenario: Update a collection member only
+    When I add "Content-Type" header equal to "application/ld+json"
+    And I send a "PUT" request to "/relation3s/1" with body:
+    """
+    {
+      "relation2s": ["/relation2s/2"]
+    }
+    """
+    Then the response status code should be 200
+    And the header "Cache-Tags" should not exist
+    And "/relation3s,/relation3s/1,/relation2s/2,/relation2s,/relation2s/1" IRIs should be purged
+
+  Scenario: Delete the collection owner
+    When I add "Content-Type" header equal to "application/ld+json"
+    And I send a "DELETE" request to "/relation3s/1"
+    Then the response status code should be 204
+    And the header "Cache-Tags" should not exist
+    And "/relation3s,/relation3s/1,/relation2s/2" IRIs should be purged
+

tests/Fixtures/TestBundle/Entity/Relation3.php

@@ -0,0 +1,61 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <dunglas@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace ApiPlatform\Core\Tests\Fixtures\TestBundle\Entity;
+
+use ApiPlatform\Core\Annotation\ApiResource;
+use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\ORM\Mapping as ORM;
+
+/**
+ * @ApiResource
+ * @ORM\Entity
+ */
+class Relation3
+{
+    /**
+     * @ORM\Column(type="integer")
+     * @ORM\Id
+     * @ORM\GeneratedValue
+     */
+    public $id;
+
+    /**
+     * @ORM\ManyToMany(targetEntity="Relation2", orphanRemoval=true)
+     */
+    private $relation2s;
+
+    public function __construct()
+    {
+        $this->relation2s = new ArrayCollection();
+    }
+
+    public function getRelation2s()
+    {
+        return $this->relation2s;
+    }
+
+    public function addRelation2(Relation2 $relation)
+    {
+        $this->relation2s->add($relation);
+
+        return $this;
+    }
+
+    public function removeRelation2(Relation2 $relation)
+    {
+        $this->relation2s->removeElement($relation);
+
+        return $this;
+    }
+}