test root set icon url

backend/tests/Feature/SetsEndpointTest.php

@@ -131,6 +131,13 @@ class SetsEndpointTest extends TestCase
         $this->assertStringStartsWith('set-icons/', $storedIconPath);
         $this->assertSame($storedIconPath, $rootElement->getIconImageUrl());
         Storage::disk('public')->assertExists($storedIconPath);
+
+        $elementResponse = $this->getJson("/api/elements/$rootElementId");
+        $elementResponse->assertOk();
+        $elementResponse->assertJsonPath(
+            'element.iconImageUrl',
+            $body['set']['iconImageUrl'],
+        );
     }
 
     public function testCreateSetRequiresIconImage(): void