added custom filter with tag support to products

products/tests.py

@@ -98,8 +98,15 @@ class ProductViewSetTest(APITestCase):
 
     def test_anon_user_can_filter_tags(self):
         # create instances
-        self.factory(name='product1', tags="zapatos, verdes")
-        self.factory(name='product2', tags="rojos")
+        expected_instance = [
+            self.factory(name='product1', tags="zapatos, rojos"),
+            self.factory(name='product2', tags="rojos")
+        ]
+        unexpected_instance = [
+            self.factory(name='sadfdsa', tags="zapatos, azules"),
+            self.factory(name='qwerw', tags="xxl")
+        ]
+
 
         url = f"{self.endpoint}?tags=rojos"
 
@@ -107,12 +114,10 @@ class ProductViewSetTest(APITestCase):
         response = self.client.get(url)
         payload = response.json()
 
-        # import ipdb; ipdb.set_trace()
-
         # Assert access is granted
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         # Assert number of instnaces in response
-        self.assertEquals(1, len(payload))
+        self.assertEquals(len(expected_instance), len(payload))
 
 
     # authenticated user