test set elements

backend/tests/Fakes/FakeElementRepository.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace Tests\Fakes;
+
+use App\Element\CreateElementDto;
+use App\Element\Element;
+use App\Element\ElementRepository;
+
+class FakeElementRepository implements ElementRepository
+{
+    /**
+     * @var Element[]
+     */
+    private array $elementsById = [];
+
+    public function create(CreateElementDto $dto): Element
+    {
+        $id = count($this->elementsById) + 1;
+        $element = new Element(
+            id: $id,
+            title: $dto->title,
+            set: $dto->set,
+            parentElement: $dto->parentElement,
+        );
+        $this->elementsById[$id] = $element;
+
+        return $element;
+    }
+
+    public function find(int $id): ?Element
+    {
+        if (! isset($this->elementsById[$id])) {
+            return null;
+        }
+
+        return $this->cloneElement($this->elementsById[$id]);
+    }
+
+    /**
+     * @return Element[]
+     */
+    public function findBySetId(int $id): array
+    {
+        $elements = [];
+        foreach ($this->elementsById as $element) {
+            if ($element->getSet()->getId() === $id) {
+                $elements[] = $this->cloneElement($element);
+            }
+        }
+
+        return $elements;
+    }
+
+    private function cloneElement(Element $element): Element
+    {
+        $parentElement = $element->getParentElement();
+        if ($parentElement !== null) {
+            $parentElement = $this->cloneElement($parentElement);
+        }
+
+        return new Element(
+            id: $element->getId(),
+            title: $element->getTitle(),
+            set: $element->getSet(),
+            parentElement: $parentElement,
+        );
+    }
+}