dashboard/billing/tests.py

# Copyright © 2022 Aravinth Manivannan <realaravinth@batsense.net>
#
# 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 <http://www.gnu.org/licenses/>.
import time
from io import StringIO

from django.contrib.auth import get_user_model
from django.core import mail
from django.core.management import call_command
from django.urls import reverse
from django.test import TestCase, Client, override_settings
from django.utils.http import urlencode
from django.contrib.auth import authenticate
from django.core.management import call_command
from django.conf import settings

from payments import get_payment_model, RedirectNeeded, PaymentStatus

from accounts.tests import register_util, login_util
from dash.tests import create_configurations, create_instance_util, infra_custom_config
from dash.models import Instance

from .models import Payment
from .utils import payment_fullfilled


# class BillingTest(TestCase):
#    """
#    Tests billing system
#    """
#
#    def setUp(self):
#        self.username = "billing_user"
#        register_util(t=self, username=self.username)
#        create_configurations(t=self)
#
#    @override_settings(HOSTEA=infra_custom_config(test_name="test_payments"))
#    def test_payments(self):
#        c = Client()
#        login_util(self, c, "accounts.home")
#        instance_name = "test_payments"
#        create_instance_util(
#            t=self, c=c, instance_name=instance_name, config=self.instance_config[0]
#        )
#
#        instance = Instance.objects.get(name=instance_name)
#
#        self.assertEqual(payment_fullfilled(instance=instance), True)
#
#        payment = get_payment_model().objects.get(paid_by=self.user)
#        invoice_uri = reverse("billing.invoice.details", args=(payment.public_ref,))
#
#        # check if paid invoice is listed in paid invoice list view
#        resp = c.get(reverse("billing.invoice.paid"))
#        self.assertEqual(str.encode(invoice_uri) in resp.content, True)
#
#        # check if the paid invoice is displayed in the pending invoice view, should not be displayed
#        resp = c.get(reverse("billing.invoice.pending"))
#        self.assertEqual(str.encode(invoice_uri) in resp.content, False)
#
#        # check if the invoice details view is rendering paid invoice version
#        resp = c.get(invoice_uri)
#        self.assertEqual(str.encode(instance_name) in resp.content, True)
#        self.assertEqual(
#            str.encode(str(self.instance_config[0].rent)) in resp.content, True
#        )
#        self.assertEqual(str.encode("Paid on") in resp.content, True)
#
#        # try to generate an invoice for the second time on the same VM
#        # shouldn't be possible since payment is already made for the duration
#        payment_uri = reverse("billing.invoice.generate", args=(instance.name,))
#        resp = c.get(payment_uri)
#        self.assertEqual(resp.status_code, 400)
#
#        ## payment success page; no real functionality but user is redirected here
#        # by stripe if payment is successful
#        resp = c.get(reverse("billing.invoice.success", args=(payment.public_ref,)))
#        self.assertEqual(
#            resp.headers["Location"],
#            reverse("infra.create", args=(payment.instance_name,)),
#        )
#
#        # create_instance_util creates an instance and pays for it. An email is
#        # sent when the invoice is generated and one after payment is made
#        #
#        # So we are first checking for the last email that was sent(receipt)
#        # and then the Gitea instance credentials notification followed by the
#        # invoice generation email.
#        receipt_mail = mail.outbox.pop()
#        self.assertEqual(
#            all(
#                [
#                    receipt_mail.to[0] == self.email,
#                    "This is a receipt for your latest Hostea payment"
#                    in receipt_mail.body,
#                ]
#            ),
#            True,
#        )
#
#        instance_notificaiton = mail.outbox.pop()
#        self.assertEqual(
#            all(
#                [
#                    instance_notificaiton.to[0] == self.email,
#                    "Congratulations on your new Gitea instance!"
#                    in instance_notificaiton.body,
#                ]
#            ),
#            True,
#        )
#
#        invoice_generated_mail = mail.outbox.pop()
#        self.assertEqual(
#            all(
#                [
#                    invoice_generated_mail.to[0] == self.email,
#                    "An invoice is generated" in invoice_generated_mail.body,
#                ]
#            ),
#            True,
#        )
#
#        ## payment failure page; no real functionality but user is redirected here
#        # by stripe if payment is successful
#        resp = c.get(reverse("billing.invoice.fail", args=(payment.public_ref,)))
#        self.assertEqual(b"failed" in resp.content, True)


class GenerateInvoiceCommand(TestCase):
    """
    Test command: manage.py generate_invoice
    """

    def setUp(self):
        self.username = "test_generate_invoice_cmd_user"
        register_util(t=self, username=self.username)
        create_configurations(t=self)

    @override_settings(
        HOSTEA=infra_custom_config(test_name="test_generate_invoice_cmd")
    )
    def test_cmd(self):
        c = Client()
        login_util(self, c, "accounts.home")
        instance_name = "test_generate_invoice_cmd"
        create_instance_util(
            t=self, c=c, instance_name=instance_name, config=self.instance_config[0]
        )

        stdout = StringIO()
        stderr = StringIO()

        instance = Instance.objects.get(name=instance_name)
        self.assertEqual(payment_fullfilled(instance=instance), True)
        prev_len = len(mail.outbox)

        # username exists
        call_command(
            "generate_invoice",
            stdout=stdout,
            stderr=stderr,
        )
        out = stdout.getvalue()
        print(out)
        self.assertEqual(instance_name in out, True)

        self.assertEqual(prev_len, len(mail.outbox))

        # delete payment and re-generate with command
        get_payment_model().objects.get(instance_name=instance_name).delete()

        stdout = StringIO()
        stderr = StringIO()

        call_command(
            "generate_invoice",
            stdout=stdout,
            stderr=stderr,
        )
        out = stdout.getvalue()
        print("out")
        print(out)
        self.assertEqual(instance_name in out, True)
        self.assertEqual(f"Payment not fulfilled for instance: {instance}" in out, True)
        self.assertEqual(prev_len + 1, len(mail.outbox))