add test to export ids for group blocks

app/Models/FormBlock.php

@@ -156,13 +156,18 @@ public function updateInteractionSequence(array $sequence)
 
     public function toTemplate()
     {
-        $blocks = $this->only(self::TEMPLATE_ATTRIBUTES);
+        $attributes = $this->only(self::TEMPLATE_ATTRIBUTES);
+
+        // if the block is a group, we need to add an id attribute
+        if ($this->type === FormBlockType::group) {
+            $attributes['id'] = $this->uuid;
+        }
 
         $interactions = $this->formBlockInteractions->map(function ($interactions) {
             return $interactions->toTemplate();
         })->toArray();
 
-        return array_merge($blocks, [
+        return array_merge($attributes, [
             'formBlockInteractions' => $interactions,
         ]);
     }

tests/Feature/FormTemplateTest.php

@@ -60,6 +60,35 @@
     $this->assertNotNull($action);
 });
 
+test('group blocks have an Id attribute and children have a parent Id', function () {
+    $form = Form::factory()
+        ->create([
+            'name' => 'Test Form',
+        ]);
+
+    $groupBlock = FormBlock::factory()->create([
+        'form_id' => $form->id,
+        'type' => FormBlockType::group,
+    ]);
+
+    $childBlock = FormBlock::factory()->create([
+        'form_id' => $form->id,
+        'type' => FormBlockType::none,
+        'parent_block' => $groupBlock->uuid,
+    ]);
+
+    $response = $this->actingAs($form->user)
+        ->json('GET', route('api.forms.template-export', [
+            'form' => $form->uuid,
+        ]))->assertStatus(200);
+
+    // assert that the group block has an id
+    $this->assertArrayHasKey('id', $response->json('blocks.0'));
+
+    // assert that the child block has a parent id
+    $this->assertArrayHasKey('parent_block', $response->json('blocks.1'));
+});
+
 test('can import a string template for an existing form', function () {
     /** @var User $user */
     $user = User::factory()->withTeam()->create();