TEST Review can be updated

[jamalbrowning]

Create a TEST so reviews can be updated

Example

def test_update_product(self):
        """
        Ensure we can update a product.
        """
        self.test_create_product()

        url = "/products/1"
        data = {
            "name": "Kite",
            "price": 24.99,
            "quantity": 40,
            "description": "It flies very high",
            "category_id": 1,
            "created_date": datetime.date.today(),
            "location": "Pittsburgh"
        }
        self.client.credentials(HTTP_AUTHORIZATION='Token ' + self.token)
        response = self.client.put(url, data, format='json')
        self.assertEqual(response.status_code, status.HTTP_204_NO_CONTENT)

        response = self.client.get(url, data, format='json')
        json_response = json.loads(response.content)
        self.assertEqual(response.status_code, status.HTTP_200_OK)
        self.assertEqual(json_response["name"], "Kite")
        self.assertEqual(json_response["price"], 24.99)
        self.assertEqual(json_response["quantity"], 40)
        self.assertEqual(json_response["description"], "It flies very high")
        self.assertEqual(json_response["location"], "Pittsburgh")