write test for another items and change some part of the code

tests/Feature/Category/ListTest.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace Tests\Feature\Category;
+
+use App\Models\Category;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Foundation\Testing\WithFaker;
+use Tests\TestCase;
+
+class ListTest extends TestCase
+{
+    use RefreshDatabase, WithFaker;
+
+    public function test_guest_user_cannot_access_list(): void
+    {
+        $response = $this->getJson(route('categories.list'));
+        $response->assertUnauthorized();
+    }
+    public function test_user_can_see_list(): void
+    {
+        $user = User::factory()->create();
+        $response = $this->actingAs($user)->getJson(route('categories.list'));
+
+        Category::factory()->count(3)->create();
+
+        $response->assertOk();
+        $response->assertJsonStructure([
+            'data' => [
+                '*' => [
+                    'id',
+                    'category_id',
+                    'category_name',
+                    'subcategory_id',
+                    'subcategory_name'
+                ],
+            ]
+        ]);
+
+    }
+}