test element domain

backend/tests/Unit/Element/ElementTest.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Tests\Unit\Element;
+
+use App\Element\Element;
+use App\Set\Set;
+use App\Shared\ValueObject\EmailAddress;
+use App\User\User;
+use PHPUnit\Framework\TestCase;
+
+class ElementTest extends TestCase
+{
+    public function test_it_exposes_its_hierarchical_identity(): void
+    {
+        $creator = new User(
+            id: 7,
+            email: new EmailAddress('creator@example.com'),
+            passwordHash: 'hashed-password',
+        );
+        $set = new Set(
+            id: 11,
+            name: 'Bible',
+            creator: $creator,
+        );
+        $parentElement = new Element(
+            id: 21,
+            name: 'Genesis',
+            kind: 'book',
+            set: $set,
+            parentElement: null,
+            position: 1,
+        );
+        $element = new Element(
+            id: 22,
+            name: 'Genesis',
+            kind: 'portion',
+            set: $set,
+            parentElement: $parentElement,
+            position: 2,
+        );
+
+        $this->assertSame(22, $element->getId());
+        $this->assertSame('Genesis', $element->getName());
+        $this->assertSame('portion', $element->getKind());
+        $this->assertSame($set, $element->getSet());
+        $this->assertSame($parentElement, $element->getParentElement());
+        $this->assertSame(2, $element->getPosition());
+    }
+}