diff --git a/tests/integration/Api/Autocomplete/CategoryControllerTest.php b/tests/integration/Api/Autocomplete/CategoryControllerTest.php
new file mode 100644
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+++ b/tests/integration/Api/Autocomplete/CategoryControllerTest.php
@@ -0,0 +1,135 @@
+<?php
+/*
+ * CategoryControllerTest.php
+ * Copyright (c) 2024 tasnim0tantawi
+ *
+ * This file is part of Firefly III (https://github.com/firefly-iii).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+declare(strict_types=1);
+
+namespace Tests\integration\Api\Autocomplete;
+
+use FireflyIII\Models\Category;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\integration\TestCase;
+use FireflyIII\User;
+
+/**
+ * Class CategoryControllerTest
+ *
+ * @internal
+ *
+ * @coversNothing
+ */
+final class CategoryControllerTest extends TestCase {
+    /**
+     * @covers \FireflyIII\Api\V1\Controllers\Autocomplete\CategoryController
+     */
+    use RefreshDatabase;
+
+    private function createAuthenticatedUser(): User {
+        return User::create([
+            'email' => 'test@email.com',
+            'password' => 'password',
+            ]);
+        }
+
+    private function createTestCategories(int $count, User $user): void {
+        for ($i = 1; $i <= $count; $i++) {
+            $category = Category::create([
+                'user_id' => $user->id,
+                'name' => 'Category ' . $i,
+                'user_group_id' => $user->user_group_id,
+            ]);
+        }
+    }
+    
+
+    public function testGivenAnUnauthenticatedRequestWhenCallingTheCategoriesEndpointThenReturns401HttpCode(): void {
+        // test API
+        $response = $this->get(route('api.v1.autocomplete.categories'), ['Accept' => 'application/json']);
+        $response->assertStatus(401);
+        $response->assertHeader('Content-Type', 'application/json');
+        $response->assertContent('{"message":"Unauthenticated","exception":"AuthenticationException"}');
+    }
+    
+    public function testGivenAuthenticatedRequestWhenCallingTheCategoriesEndpointThenReturns200HttpCode(): void
+    {
+        // act as a user
+        $user = $this->createAuthenticatedUser();
+        $this->actingAs($user);
+
+        $response = $this->get(route('api.v1.autocomplete.categories'), ['Accept' => 'application/json']);
+        $response->assertStatus(200);
+        $response->assertHeader('Content-Type', 'application/json');
+
+    }
+
+    public function testGivenAuthenticatedRequestWhenCallingTheCategoriesEndpointThenReturnsCategories(): void
+    {
+        $user = $this->createAuthenticatedUser();
+        $this->actingAs($user);
+
+        $this->createTestCategories(5, $user);
+        $response = $this->get(route('api.v1.autocomplete.categories'), ['Accept' => 'application/json']);
+        $response->assertStatus(200);
+        $response->assertHeader('Content-Type', 'application/json');
+        $response->assertJsonCount(5);
+        $response->assertJsonFragment(['name' => 'Category 1']);
+          $response->assertJsonStructure([
+            '*' => [
+                'id',
+                'name',
+            ],
+        ]);
+    }
+
+    public function testGivenAuthenticatedRequestWhenCallingTheCategoriesEndpointWithQueryThenReturnsCategoriesWithLimit(): void
+    {
+        $user = $this->createAuthenticatedUser();
+        $this->actingAs($user);
+
+        $this->createTestCategories(5, $user);
+        $response = $this->get(route('api.v1.autocomplete.categories', [
+            'query' => 'Category',
+            'limit' => 3
+        ]), ['Accept' => 'application/json']);
+
+        $response->assertStatus(200);
+        $response->assertHeader('Content-Type', 'application/json');
+        $response->assertJsonCount(3);
+    }
+
+    public function testGivenAuthenticatedRequestWhenCallingTheCategoriesEndpointWithQueryThenReturnsCategoriesThatMatchQuery(): void
+    {
+        $user = $this->createAuthenticatedUser();
+        $this->actingAs($user);
+
+        $this->createTestCategories(20, $user);
+        $response = $this->get(route('api.v1.autocomplete.categories', [
+            'query' => 'Category 1',
+            'limit' => 20,
+        ]), ['Accept' => 'application/json']);
+
+        $response->assertStatus(200);
+        $response->assertHeader('Content-Type', 'application/json');
+        // Category 1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 (11)
+        $response->assertJsonCount(11);
+        $response->assertJsonMissing(['name' => 'Category 2']);
+    }
+    
+}
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