created endpoint to get all categories

products/tests.py

@@ -13,7 +13,7 @@ from rest_framework import status
 
 from companies.factories import CompanyFactory
 from products.factories import ProductFactory, ActiveProductFactory
-from products.models import Product
+from products.models import Product, CategoryTag
 
 from core.factories import CustomUserFactory
 from core.utils import get_tokens_for_user
@@ -1258,3 +1258,37 @@ class PurchaseEmailTest(APITestCase):
         payload = response.json()
         self.assertTrue( 'email' in payload['error'])
 
+
+class AllCategoriesTest(APITestCase):
+
+    def setUp(self):
+        """Tests setup
+        """
+        self.endpoint = '/api/v1/products/all_categories/'
+        # self.factory = ProductFactory
+        self.model = CategoryTag
+        # create user
+        self.email = f"user@mail.com"
+        self.password = ''.join(random.choices(string.ascii_uppercase, k = 10))
+        self.user = CustomUserFactory(email=self.email, is_active=True)
+        self.user.set_password(self.password)
+        self.user.save()
+
+    def test_get_all_categories(self):
+        # create instances
+        instances = [
+            self.model.objects.create(name='A'),
+            self.model.objects.create(name='B'),
+            self.model.objects.create(name='C'),
+            self.model.objects.create(name='D'),
+            self.model.objects.create(name='E'),
+        ]
+
+        response = self.client.get(self.endpoint)
+
+        # assertions
+        self.assertEquals(response.status_code, 200)
+
+        payload = response.json()
+
+        self.assertEquals(len(instances), len(payload))