dynamicweb/utils/tests.py

import uuid
from unittest.mock import patch

import stripe
from django.http.request import HttpRequest
from django.test import Client
from django.test import TestCase
from model_mommy import mommy

from datacenterlight.models import StripePlan
from membership.models import StripeCustomer
from utils.stripe_utils import StripeUtils


class BaseTestCase(TestCase):
    """
    Base class to initialize the test cases
    """

    def setUp(self):
        # Password
        self.dummy_password = 'test_password'

        # Users
        self.customer, self.another_customer = mommy.make('membership.CustomUser',
                                                          _quantity=2)
        self.customer.set_password(self.dummy_password)
        self.customer.save()
        self.another_customer.set_password(self.dummy_password)
        self.another_customer.save()

        # Stripe mocked data
        self.stripe_mocked_customer = self.customer_stripe_mocked_data()

        #  Clients
        self.customer_client = self.get_client(self.customer)
        self.another_customer_client = self.get_client(self.another_customer)

        # Request Object
        self.request = HttpRequest()
        self.request.META['SERVER_NAME'] = 'ungleich.com'
        self.request.META['SERVER_PORT'] = '80'

    def get_client(self, user):
        """
        Authenticate a user and return the client
        """
        client = Client()
        client.login(email=user.email, password=self.dummy_password)
        return client

    def customer_stripe_mocked_data(self):
        return {
            "id": "cus_8R1y9UWaIIjZqr",
            "object": "customer",
            "currency": "usd",
            "default_source": "card_18A9up2eZvKYlo2Cq2RJMGeF",
            "email": "vmedixtodd+1@gmail.com",
            "livemode": False,
            "metadata": {
            },
            "shipping": None,
            "sources": {
                "object": "list",
                "data": [{
                    "id": "card_18A9up2eZvKYlo2Cq2RJMGeF",
                    "object": "card",
                    "brand": "Visa",
                    "country": "US",
                    "customer": "cus_8R1y9UWaIIjZqr",
                    "cvc_check": "pass",
                    "dynamic_last4": None,
                    "exp_month": 12,
                    "exp_year": 2018,
                    "funding": "credit",
                    "last4": "4242",
                }]
            }
        }

    def setup_view(self, view, *args, **kwargs):
        """Mimic as_view() returned callable, but returns view instance.

        args and kwargs are the same you would pass to ``reverse()``

        """
        view.request = self.request
        view.args = args
        view.kwargs = kwargs
        view.config = None
        return view


class TestStripeCustomerDescription(TestCase):
    """
    A class to test setting the description field of the stripe customer
    https://stripe.com/docs/api#metadata
    """

    def setUp(self):
        self.customer_password = 'test_password'
        self.customer_email = 'test@ungleich.ch'
        self.customer_name = "Monty Python"
        self.customer = mommy.make('membership.CustomUser')
        self.customer.set_password(self.customer_password)
        self.customer.email = self.customer_email
        self.customer.save()
        self.stripe_utils = StripeUtils()
        self.token = stripe.Token.create(
            card={
                "number": '4111111111111111',
                "exp_month": 12,
                "exp_year": 2022,
                "cvc": '123'
            },
        )
        self.failed_token = stripe.Token.create(
            card={
                "number": '4000000000000341',
                "exp_month": 12,
                "exp_year": 2022,
                "cvc": '123'
            },
        )

    def test_creating_stripe_customer(self):
        stripe_data = self.stripe_utils.create_customer(self.token.id, self.customer.email, self.customer_name)
        self.assertEqual(stripe_data.get('error'), None)
        customer_data = stripe_data.get('response_object')
        self.assertEqual(customer_data.description, self.customer_name)


class StripePlanTestCase(TestStripeCustomerDescription):
    """
    A class to test Stripe plans
    """

    def test_get_stripe_plan_id_string(self):
        plan_id_string = StripeUtils.get_stripe_plan_id(cpu=2, ram=20, ssd=100, version=1, app='dcl')
        self.assertEqual(plan_id_string, 'dcl-v1-cpu-2-ram-20gb-ssd-100gb')

    def test_get_or_create_plan(self):
        stripe_plan = self.stripe_utils.get_or_create_stripe_plan(2000, "test plan 1", stripe_plan_id='test-plan-1')
        self.assertIsNone(stripe_plan.get('error'))
        self.assertIsInstance(stripe_plan.get('response_object'), StripePlan)

    @patch('utils.stripe_utils.logger')
    def test_create_duplicate_plans_error_handling(self, mock_logger):
        """
        Test details:
            1. Create a test plan in Stripe with a particular id
            2. Try to recreate the plan with the same id
            3. This creates a Stripe error, the code should be able to handle the error

        :param mock_logger:
        :return:
        """
        unique_id = str(uuid.uuid4().hex)
        new_plan_id_str = 'test-plan-{}'.format(unique_id)
        stripe_plan = self.stripe_utils.get_or_create_stripe_plan(2000, "test plan {}".format(unique_id),
                                                                  stripe_plan_id=new_plan_id_str)
        self.assertIsInstance(stripe_plan.get('response_object'), StripePlan)
        self.assertEqual(stripe_plan.get('response_object').stripe_plan_id, new_plan_id_str)

        # Test creating the same plan again and expect the PLAN_EXISTS_ERROR_MSG
        # We first delete the local Stripe Plan, so that the code tries to create a new plan in Stripe
        StripePlan.objects.filter(stripe_plan_id=new_plan_id_str).all().delete()
        stripe_plan_1 = self.stripe_utils.get_or_create_stripe_plan(2000, "test plan {}".format(unique_id),
                                                                    stripe_plan_id=new_plan_id_str)
        mock_logger.debug.assert_called_with(self.stripe_utils.PLAN_EXISTS_ERROR_MSG.format(new_plan_id_str))
        self.assertIsInstance(stripe_plan_1.get('response_object'), StripePlan)
        self.assertEqual(stripe_plan_1.get('response_object').stripe_plan_id, new_plan_id_str)

        # Delete the test stripe plan that we just created
        delete_result = self.stripe_utils.delete_stripe_plan(new_plan_id_str)
        self.assertIsInstance(delete_result, dict)
        self.assertEqual(delete_result.get('response_object'), True)

    @patch('utils.stripe_utils.logger')
    def test_delete_unexisting_plan_should_fail(self, mock_logger):
        plan_id = 'crazy-plan-id-that-does-not-exist'
        result = self.stripe_utils.delete_stripe_plan(plan_id)
        self.assertIsInstance(result, dict)
        self.assertEqual(result.get('response_object'), False)
        mock_logger.debug.assert_called_with(self.stripe_utils.PLAN_DOES_NOT_EXIST_ERROR_MSG.format(plan_id))

    def test_subscribe_customer_to_plan(self):
        stripe_plan = self.stripe_utils.get_or_create_stripe_plan(2000, "test plan 1", stripe_plan_id='test-plan-1')
        stripe_customer = StripeCustomer.get_or_create(email=self.customer_email,
                                                       token=self.token)
        result = self.stripe_utils.subscribe_customer_to_plan(stripe_customer.stripe_id,
                                                              [{"plan": stripe_plan.get(
                                                                  'response_object').stripe_plan_id}])
        self.assertIsInstance(result.get('response_object'), stripe.Subscription)
        self.assertIsNone(result.get('error'))
        self.assertEqual(result.get('response_object').get('status'), 'active')

    def test_subscribe_customer_to_plan_failed_payment(self):
        stripe_plan = self.stripe_utils.get_or_create_stripe_plan(2000, "test plan 1", stripe_plan_id='test-plan-1')
        stripe_customer = StripeCustomer.get_or_create(email=self.customer_email,
                                                       token=self.failed_token)
        result = self.stripe_utils.subscribe_customer_to_plan(stripe_customer.stripe_id,
                                                              [{"plan": stripe_plan.get(
                                                                  'response_object').stripe_plan_id}])
        self.assertIsNone(result.get('response_object'), None)
        self.assertIsNotNone(result.get('error'))